The ligand binding domain of the orphan nuclear receptors TR4 and TR2; The ligand binding domain of the TR4 and TR2 (human testicular receptor 4 and 2): TR4 and TR2 are orphan nuclear receptors. Several isoforms of TR4 and TR2 have been isolated in various tissues. TR2 is abundantly expressed in the androgen-sensitive prostate. TR4 transcripts are expressed in many tissues, including central nervous system, adrenal gland, spleen, thyroid gland, and prostate. The expression of TR2 is negatively regulated by androgen, retinoids, and radiation. The expression of both mouse TR2 and TR4 is up-regulated by neurocytokine ciliary neurotrophic factor (CNTF) in mouse. It has shown that human TR2 binds to a wide spectrum of natural hormone response elements (HREs) with distinct affinities suggesting that TR2 may cross-talk with other gene expression regulation systems. The genes responding to TR2 or TR4 include genes that are regulated by retinoic acid receptor, vitamin D receptor, peroxisome proliferator-activated receptor. TR4/2 binds to HREs as a dimer. Like other members of the nuclea r receptor (NR) superfamily of ligand-activated transcription factors, TR2-like receptors have a central well conserved DNA binding domain (DBD), a variable N-terminal domain, a flexible hinge and a C-terminal ligand binding domain (LBD).

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 530400798 368 LLSDSHVAFRLTMPSPMPEYLNVHYIGESASRLLFLSMHWALSIPSFQALGQENSISLVKAYWNELFTLGLAQCWQVMNV 447
Cdd:cd06952    1 LLTDVHVAFKLQMPSPMPSYLNVHYICESASRLLFLSIHWARSIPAFQALGAETQTSLVRACWPELFTLGLAQCSQQLSL 80

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 530400798 448 ATILATFVNCLHNSLQQE-----RRKLLMEHIFKLQEFCNSMVKLCIDGYEYAYLKAIVLFSPDHPSLENMEQIEKFQEK 522
Cdd:cd06952   81 PTILAAIINHLQTSIQQDklsadKVKQVMEHINKLQEFVNSMQKLDVDDHEYAYLKAIVLFSPDHPGQELRQQIEKLQEK 160

                        170       180       190       200       210       220
                 ....*....|....*....|....*....|....*....|....*....|....*....|..
gi 530400798 523 AYVEFQDYITKTYPDDTYRLSRLLLRLPALRLMNATITEELFFKGLIGNIRIDSVIPHILKM 584
Cdd:cd06952  161 ALMELRDYVGKTYPEDEYRLSKLLLRLPPLRSLSPAITEELFFAGLIGNVQIDSVIPYILRM 222

The ligand binding domain of the orphan nuclear receptors TR4 and TR2; The ligand binding domain of the TR4 and TR2 (human testicular receptor 4 and 2): TR4 and TR2 are orphan nuclear receptors. Several isoforms of TR4 and TR2 have been isolated in various tissues. TR2 is abundantly expressed in the androgen-sensitive prostate. TR4 transcripts are expressed in many tissues, including central nervous system, adrenal gland, spleen, thyroid gland, and prostate. The expression of TR2 is negatively regulated by androgen, retinoids, and radiation. The expression of both mouse TR2 and TR4 is up-regulated by neurocytokine ciliary neurotrophic factor (CNTF) in mouse. It has shown that human TR2 binds to a wide spectrum of natural hormone response elements (HREs) with distinct affinities suggesting that TR2 may cross-talk with other gene expression regulation systems. The genes responding to TR2 or TR4 include genes that are regulated by retinoic acid receptor, vitamin D receptor, peroxisome proliferator-activated receptor. TR4/2 binds to HREs as a dimer. Like other members of the nuclea r receptor (NR) superfamily of ligand-activated transcription factors, TR2-like receptors have a central well conserved DNA binding domain (DBD), a variable N-terminal domain, a flexible hinge and a C-terminal ligand binding domain (LBD).

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 530400798 368 LLSDSHVAFRLTMPSPMPEYLNVHYIGESASRLLFLSMHWALSIPSFQALGQENSISLVKAYWNELFTLGLAQCWQVMNV 447
Cdd:cd06952    1 LLTDVHVAFKLQMPSPMPSYLNVHYICESASRLLFLSIHWARSIPAFQALGAETQTSLVRACWPELFTLGLAQCSQQLSL 80

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 530400798 448 ATILATFVNCLHNSLQQE-----RRKLLMEHIFKLQEFCNSMVKLCIDGYEYAYLKAIVLFSPDHPSLENMEQIEKFQEK 522
Cdd:cd06952   81 PTILAAIINHLQTSIQQDklsadKVKQVMEHINKLQEFVNSMQKLDVDDHEYAYLKAIVLFSPDHPGQELRQQIEKLQEK 160

                        170       180       190       200       210       220
                 ....*....|....*....|....*....|....*....|....*....|....*....|..
gi 530400798 523 AYVEFQDYITKTYPDDTYRLSRLLLRLPALRLMNATITEELFFKGLIGNIRIDSVIPHILKM 584
Cdd:cd06952  161 ALMELRDYVGKTYPEDEYRLSKLLLRLPPLRSLSPAITEELFFAGLIGNVQIDSVIPYILRM 222

Zinc finger, C4 type (two domains); In nearly all cases, this is the DNA binding domain of a nuclear hormone receptor. The alignment contains two Zinc finger domains that are too dissimilar to be aligned with each other.

                          10        20        30        40        50        60
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*...
gi 530400798  112 LCVVCGDKASGRHYGAVTCEGCKGFFKRSIRKNLVYSCRGSKDCIINKHHRNRCQYCRLQRCIAFGMK 179
Cdd:pfam00105   1 LCKVCGDKASGYHYGVLTCEGCKGFFRRSIQKNIVYTCKFNKDCVIDKRNRNRCQYCRLKKCLEVGMS 68

Ligand-binding domain of nuclear hormone receptor; This all helical domain is involved in binding the hormone in these receptors.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 530400798  379 TMPSPMPEYLNVHYIGESASRLLFLSMHWALSIPSFQALGQENSISLVKAYWNELFTLGLAQCWQVMNVATILATFVNCL 458
Cdd:pfam00104   2 SPPLKKLRKATKEELCELWERDLLLVAEWAKHFPEFQELPLEDQMALLKSFWLEWLRLEKAARSAKLRRKKILGEDVLMI 81

                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 530400798  459 HNSL---------------QQERRKLLMEHIFKL-QEFCNSMVKLCIDGYEYAYLKAIVLF--SPDHPSLENMEQIEKFQ 520
Cdd:pfam00104  82 SDDDamkfveddsswctnyDLEQLLFFLPFFNSYfFELVKPLRELNPDDEELAYLLAQLLFdyAGDGLSGEILEIVEKLQ 161

                         170
                  ....*....|....*..
gi 530400798  521 EKAYVEFQDYITKTYPD 537
Cdd:pfam00104 162 EKLANELHDYYVNKYSG 178

The ligand binding domain of the orphan nuclear receptors TR4 and TR2; The ligand binding domain of the TR4 and TR2 (human testicular receptor 4 and 2): TR4 and TR2 are orphan nuclear receptors. Several isoforms of TR4 and TR2 have been isolated in various tissues. TR2 is abundantly expressed in the androgen-sensitive prostate. TR4 transcripts are expressed in many tissues, including central nervous system, adrenal gland, spleen, thyroid gland, and prostate. The expression of TR2 is negatively regulated by androgen, retinoids, and radiation. The expression of both mouse TR2 and TR4 is up-regulated by neurocytokine ciliary neurotrophic factor (CNTF) in mouse. It has shown that human TR2 binds to a wide spectrum of natural hormone response elements (HREs) with distinct affinities suggesting that TR2 may cross-talk with other gene expression regulation systems. The genes responding to TR2 or TR4 include genes that are regulated by retinoic acid receptor, vitamin D receptor, peroxisome proliferator-activated receptor. TR4/2 binds to HREs as a dimer. Like other members of the nuclea r receptor (NR) superfamily of ligand-activated transcription factors, TR2-like receptors have a central well conserved DNA binding domain (DBD), a variable N-terminal domain, a flexible hinge and a C-terminal ligand binding domain (LBD).

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 530400798 368 LLSDSHVAFRLTMPSPMPEYLNVHYIGESASRLLFLSMHWALSIPSFQALGQENSISLVKAYWNELFTLGLAQCWQVMNV 447
Cdd:cd06952    1 LLTDVHVAFKLQMPSPMPSYLNVHYICESASRLLFLSIHWARSIPAFQALGAETQTSLVRACWPELFTLGLAQCSQQLSL 80

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 530400798 448 ATILATFVNCLHNSLQQE-----RRKLLMEHIFKLQEFCNSMVKLCIDGYEYAYLKAIVLFSPDHPSLENMEQIEKFQEK 522
Cdd:cd06952   81 PTILAAIINHLQTSIQQDklsadKVKQVMEHINKLQEFVNSMQKLDVDDHEYAYLKAIVLFSPDHPGQELRQQIEKLQEK 160

                        170       180       190       200       210       220
                 ....*....|....*....|....*....|....*....|....*....|....*....|..
gi 530400798 523 AYVEFQDYITKTYPDDTYRLSRLLLRLPALRLMNATITEELFFKGLIGNIRIDSVIPHILKM 584
Cdd:cd06952  161 ALMELRDYVGKTYPEDEYRLSKLLLRLPPLRSLSPAITEELFFAGLIGNVQIDSVIPYILRM 222

DNA-binding domain of nuclear receptors is composed of two C4-type zinc fingers; DNA-binding domain of nuclear receptors is composed of two C4-type zinc fingers. Each zinc finger contains a group of four Cys residues which co-ordinates a single zinc atom. It interacts with a specific DNA site upstream of the target gene and modulates the rate of transcriptional initiation. Nuclear receptors form a superfamily of ligand-activated transcription regulators, which regulate various physiological functions, from development, reproduction, to homeostasis and metabolism in animals (metazoans). The family contains not only receptors for known ligands but also orphan receptors for which ligands do not exist or have not been identified. NRs share a common structural organization with a central well conserved DNA binding domain (DBD), a variable N-terminal domain, a flexible hinge and a C-terminal ligand binding domain (LBD). Most nuclear receptors bind as homodimers or heterodimers to their target sites, which consist of two hexameric half-sites. Specificity is determined by the half-site sequence, the relative orientation of the half-sites and the number of spacer nucleotides between the half-sites. However, a growing number of nuclear receptors have been reported to bind to DNA as monomers.

                         10        20        30        40        50        60        70
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|..
gi 530400798 113 CVVCGDKASGRHYGAVTCEGCKGFFKRSIRKNLVYSCRGSKDCIINKHHRNRCQYCRLQRCIAFGMKQDSVQ 184
Cdd:cd06916    1 CAVCGDKASGYHYGVLTCEGCKGFFRRSVRRNLEYTCPAGGNCVIDKRNRNRCQACRLKKCLAVGMRKEAVR 72

Ligand-binding domain of nuclear receptor family 2; Ligand-binding domain (LBD) of nuclear receptor (NR) family 2: This is one of the major subfamily of nuclear receptors, including some well known nuclear receptors such as glucocorticoid receptor (GR), mineralocorticoid receptor (MR), estrogen receptor (ER), progesterone receptor (PR), and androgen receptor (AR), other related receptors. Nuclear receptors form a superfamily of ligand-activated transcription regulators, which regulate various physiological functions, from development, reproduction, to homeostasis and metabolism in animals (metazoans). The family contains not only receptors for known ligands but also orphan receptors for which ligands do not exist or have not been identified. NRs share a common structural organization with a central well conserved DNA binding domain (DBD), a variable N-terminal domain, a non-conserved hinge and a C-terminal ligand binding domain (LBD).

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 530400798 390 VHYIGESASRLLFLSMHWALSIPSFQALGQENSISLVKAYWNELFTLGLAQCWQVMNVATILAtFVNCLHNSLQQERRKL 469
Cdd:cd06930    1 PESLCELADRVLFKTVDWAKNLPAFRNLPLDDQLTLLQNSWAELLLLGLAQRSVHFELSELLL-PSPLLVILTEREALLG 79

                         90       100       110       120       130       140       150
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 530400798 470 LMEHIFKLQEFCNSMVKLCIDGYEYAYLKAIVLFSPDHPSLENMEQIEKFQEKAYVEFQDYITKTYPDDT 539
Cdd:cd06930   80 LAELVQRLQELLSKLRSLQLDPKEYACLKAIVLFNPDLPGLKNQQQVEELQEKAQQALQEYIRKRYPQQP 149

DNA-binding domain of chicken ovalbumin upstream promoter transcription factors (COUP-TFs) is composed of two C4-type zinc fingers; DNA-binding domain of chicken ovalbumin upstream promoter transcription factors (COUP-TFs) is composed of two C4-type zinc fingers. Each zinc finger contains a group of four Cys residues which co-ordinates a single zinc atom. COUP-TFs are orphan members of the steroid/thyroid hormone receptor superfamily. They are expressed in many tissues and are involved in the regulation of several important biological processes, such as neurogenesis, organogenesis, cell fate determination, and metabolic homeostasis. COUP-TFs homodimerize or heterodimerize with retinoid X receptor (RXR) and a few other nuclear receptors and bind to a variety of response elements that are composed of imperfect AGGTCA direct or inverted repeats with various spacings. COUP-TFs are generally considered to be repressors of transcription for other nuclear hormone receptors such as retinoic acid receptor (RAR), thyroid hormone receptor (TR), vitamin D receptor (VDR), peroxisome proliferator activated receptor (PPAR), and hepatocyte nuclear factor 4 (HNF4). Like other members of the nuclear receptor (NR) superfamily of ligand-activated transcription factors, COUP-TFs have a central well conserved DNA binding domain (DBD), a variable N-terminal domain, a flexible hinge and a C-terminal ligand binding domain (LBD).

                         10        20        30        40        50        60        70
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|..
gi 530400798 113 CVVCGDKASGRHYGAVTCEGCKGFFKRSIRKNLVYSCRGSKDCIINKHHRNRCQYCRLQRCIAFGMKQDSVQ 184
Cdd:cd06958    1 CVVCGDKSSGKHYGQFTCEGCKSFFKRSVRRNLTYTCRGNRNCPIDQHHRNQCQYCRLKKCLKVGMRREAVQ 72

DNA-binding domain of retinoid X receptor (RXR) is composed of two C4-type zinc fingers; DNA-binding domain of retinoid X receptor (RXR) is composed of two C4-type zinc fingers. Each zinc finger contains a group of four Cys residues which co-ordinates a single zinc atom. RXR functions as a DNA binding partner by forming heterodimers with other nuclear receptors including CAR, FXR, LXR, PPAR, PXR, RAR, TR, and VDR. All RXR heterodimers preferentially bind response elements composed of direct repeats of two AGGTCA sites with a 1-5 bp spacer. RXRs can play different roles in these heterodimers. RXR acts either as a structural component of the heterodimer complex, required for DNA binding but not acting as a receptor, or as both a structural and a functional component of the heterodimer, allowing 9-cis RA to signal through the corresponding heterodimer. In addition, RXR can also form homodimers, functioning as a receptor for 9-cis RA, independently of other nuclear receptors. Like other members of the nuclear receptor (NR) superfamily of ligand-activated transcription factors, RXR has a central well conserved DNA binding domain (DBD), a variable N-terminal domain, a flexible hinge and a C-terminal ligand binding domain (LBD).

                         10        20        30        40        50        60        70
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 530400798 112 LCVVCGDKASGRHYGAVTCEGCKGFFKRSIRKNLVYSCRGSKDCIINKHHRNRCQYCRLQRCIAFGMKQDSVQCER 187
Cdd:cd06956    2 ICAICGDRASGKHYGVYSCEGCKGFFKRTVRKDLTYTCRDNKDCLIDKRQRNRCQYCRYQKCLAMGMKREAVQEER 77

DNA-binding domain of retinoic acid receptor (RAR) is composed of two C4-type zinc fingers; DNA-binding domain of retinoic acid receptor (RAR) is composed of two C4-type zinc fingers. Each zinc finger contains a group of four Cys residues which co-ordinates a single zinc atom. RAR interacts with specific DNA sites upstream of the target gene and modulates the rate of transcriptional initiation. RARs mediate the biological effect of retinoids, including both natural dietary vitamin A (retinol) metabolites and active synthetic analogs. Retinoids play key roles in a wide variety of essential biological processes, such as vertebrate embryonic morphogenesis and organogenesis, differentiation and apoptosis, and homeostasis. RAR function as a heterodimer with retinoic X receptor by binding to specific RAR response elements (RAREs), which are composed of two direct repeats of the consensus sequence 5'-AGGTCA-3' separated by one to five base pair and found in the promoter regions of retinoid target genes. Like other members of the nuclear receptor (NR) superfamily of ligand-activated transcription factors, retinoic acid receptors have a central well conserved DNA binding domain (DBD), a variable N-terminal domain, a non-conserved hinge and a C-terminal ligand binding domain (LBD).

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 530400798 108 KVFDLCVVCGDKASGRHYGAVTCEGCKGFFKRSIRKNLVYSCRGSKDCIINKHHRNRCQYCRLQRCIAFGMKQDSVQCER 187
Cdd:cd06964    2 RIYKPCFVCQDKSSGYHYGVSACEGCKGFFRRSIQKNMVYTCHRDKNCIINKVTRNRCQYCRLQKCFEVGMSKESVRNDR 81

DNA-binding domain of the photoreceptor cell-specific nuclear receptor (PNR) like proteins is composed of two C4-type zinc fingers; DNA-binding domain of the photoreceptor cell-specific nuclear receptor (PNR) like proteins is composed of two C4-type zinc fingers. Each zinc finger contains a group of four Cys residues which co-ordinates a single zinc atom. PNR interacts with specific DNA sites upstream of the target gene and modulates the rate of transcriptional initiation. PNR is a member of nuclear receptor superfamily of the ligand-activated transcription factors. PNR is expressed only in the outer layer of retinal photoreceptor cells. It may be involved in the signaling pathway regulating photoreceptor differentiation and/or maintenance. It most likely binds to DNA as a homodimer. Like other members of the nuclear receptor (NR) superfamily of ligand-activated transcription factors, PNR has a central well conserved DNA binding domain (DBD), a variable N-terminal domain, a flexible hinge and a C-terminal ligand binding domain (LBD).

                         10        20        30        40        50        60        70
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*..
gi 530400798 113 CVVCGDKASGRHYGAVTCEGCKGFFKRSIRKNLVYSCRGSKDCIINKHHRNRCQYCRLQRCIAFGMKQDSVQCERKP 189
Cdd:cd07164    1 CRVCGDRASGKHYGVPSCDGCRGFFKRSIRRNLAYVCKENGSCVVDVARRNQCQACRFKKCLQVNMNRDAVQHERAP 77

DNA-binding domain of the photoreceptor cell-specific nuclear receptor (PNR) is composed of two C4-type zinc fingers; DNA-binding domain of the photoreceptor cell-specific nuclear receptor (PNR) is composed of two C4-type zinc fingers. Each zinc finger contains a group of four Cys residues which co-ordinates a single zinc atom. PNR interacts with specific DNA sites upstream of the target gene and modulates the rate of transcriptional initiation. PNR is a member of the nuclear receptor superfamily of the ligand-activated transcription factors. PNR is expressed only in the outer layer of retinal photoreceptor cells. It may be involved in the signaling pathway regulating photoreceptor differentiation and/or maintenance. It most likely binds to DNA as a homodimer. Like other members of the nuclear receptor (NR) superfamily of ligand-activated transcription factors, PNR has a central well conserved DNA binding domain (DBD), a variable N-terminal domain, a flexible hinge and a C-terminal ligand binding domain (LBD).

                         10        20        30        40        50        60        70
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....
gi 530400798 112 LCVVCGDKASGRHYGAVTCEGCKGFFKRSIRKNLVYSCR-GSKDCIINKHHRNRCQYCRLQRCIAFGMKQDSVQCERKP 189
Cdd:cd06970    8 LCRVCGDTSSGKHYGIYACNGCSGFFKRSVRRKLIYRCQaGTGMCPVDKAHRNQCQACRLKKCLQAGMNKDAVQNERQP 86

DNA-binding domain of Retinoid-related orphan receptors (RORs) is composed of two C4-type zinc fingers; DNA-binding domain of Retinoid-related orphan receptors (RORs) is composed of two C4-type zinc fingers. Each zinc finger contains a group of four Cys residues which coordinates a single zinc atom. ROR interacts with specific DNA sites upstream of the target gene and modulates the rate of transcriptional initiation. RORS are key regulators of many physiological processes during embryonic development. RORs bind as monomers to specific ROR response elements (ROREs) consisting of the consensus core motif AGGTCA preceded by a 5-bp A/T-rich sequence. There are three subtypes of retinoid-related orphan receptors (RORs), alpha, beta, and gamma, which differ only in N-terminal sequence and are distributed in distinct tissues. RORalpha plays a key role in the development of the cerebellum particularly in the regulation of the maturation and survival of Purkinje cells. RORbeta expression is largely restricted to several regions of the brain, the retina, and pineal gland. RORgamma is essential for lymph node organogenesis. Recently, it has been suggested that cholesterol or a cholesterol derivative are the natural ligands of RORalpha. Like other members of the nuclear receptor (NR) superfamily of ligand-activated transcription factors, retinoid-related orphan receptors have a central well conserved DNA binding domain (DBD), a variable N-terminal domain, a non-conserved hinge and a C-terminal ligand binding domain (LBD).

                         10        20        30        40        50        60        70
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*
gi 530400798 113 CVVCGDKASGRHYGAVTCEGCKGFFKRSIRKNLVYSCRGSKDCIINKHHRNRCQYCRLQRCIAFGMKQDSVQCER 187
Cdd:cd06968    8 CKICGDKSSGIHYGVITCEGCKGFFRRSQQNNVSYSCPRQKNCLIDRTNRNRCQHCRLQKCLALGMSRDAVKFGR 82

DNA-binding domain of Drosophila ecdysone-induced protein 78 (E78) like is composed of two C4-type zinc fingers; DNA-binding domain of proteins similar to Drosophila ecdysone-induced protein 78 (E78) is composed of two C4-type zinc fingers. Each zinc finger contains a group of four Cys residues which coordinates a single zinc atom. E78 interacts with specific DNA sites upstream of the target gene and modulates the rate of transcriptional initiation. Drosophila ecdysone-induced protein 78 (E78) is a transcription factor belonging to the nuclear receptor superfamily. E78 is a product of the ecdysone-inducible gene found in an early late puff locus at position 78C during the onset of Drosophila metamorphosis. An E78 orthologue from the Platyhelminth Schistosoma mansoni (SmE78) has also been identified. It is the first E78 orthologue known outside of the molting animals--the Ecdysozoa. The SmE78 may be involved in transduction of an ecdysone signal in S. mansoni, consistent with its function in Drosophila. Like other members of the nuclear receptor (NR) superfamily of ligand-activated transcription factors, E78-like receptors have a central well conserved DNA-binding domain (DBD), a variable N-terminal domain, a non-conserved hinge and a C-terminal ligand binding domain (LBD).

                         10        20        30        40        50        60        70
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*..
gi 530400798 113 CVVCGDKASGRHYGAVTCEGCKGFFKRSIRKNLVYSCRGSKDCIINKHHRNRCQYCRLQRCIAFGMKQDSVQCERKP 189
Cdd:cd07165    1 CKVCGDKASGYHYGVTSCEGCKGFFRRSIQKQIEYRCLRDGKCEIIRLNRNRCQYCRFKKCLAAGMSKDSVRYGRIP 77

DNA-binding domain of Germ cell nuclear factor (GCNF) F1 is composed of two C4-type zinc fingers; DNA-binding domain of Germ cell nuclear factor (GCNF) F1 is composed of two C4-type zinc fingers. Each zinc finger contains a group of four Cys residues which coordinates a single zinc atom. This domain interacts with specific DNA sites upstream of the target gene and modulates the rate of transcriptional initiation. GCNF is a transcription factor expressed in post-meiotic stages of developing male germ cells. In vitro, GCNF has the ability to bind to direct repeat elements of 5'-AGGTCA.AGGTCA-3', as well as to an extended half-site sequence 5'-TCA.AGGTCA-3'. Like other members of the nuclear receptor (NR) superfamily of ligand-activated transcription factors, GCNF has a central well conserved DNA-binding domain (DBD), a variable N-terminal domain, a flexible hinge and a C-terminal ligand binding domain (LBD).

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 530400798 102 PDQGPNKVfdlCVVCGDKASGRHYGAVTCEGCKGFFKRSIRKNLVYSCRGSKDCIINKHHRNRCQYCRLQRCIAFGMKQD 181
Cdd:cd07169    1 DDRAEQRT---CLICGDRATGLHYGIISCEGCKGFFKRSICNKRVYRCSRDKNCVMSRKQRNRCQYCRLLKCLQMGMNRK 77

                 ....*...
gi 530400798 182 SVQCERKP 189
Cdd:cd07169   78 AIREDGMP 85

DNA-binding domain of peroxisome proliferator-activated receptors (PPAR) is composed of two C4-type zinc fingers; DNA-binding domain of peroxisome proliferator-activated receptors (PPAR) is composed of two C4-type zinc fingers. Each zinc finger contains a group of four Cys residues which co-ordinates a single zinc atom. PPAR interacts with specific DNA sites upstream of the target gene and modulates the rate of transcriptional initiation. Peroxisome proliferator-activated receptors (PPARs) are members of the nuclear receptor superfamily of ligand-activated transcription factors. PPARs play important roles in regulating cellular differentiation, development and lipid metabolism. Activated PPAR forms a heterodimer with the retinoid X receptor (RXR) that binds to the hormone response elements, which are composed of two direct repeats of the consensus sequence 5'-AGGTCA-3' separated by one to five base pair located upstream of the peroxisome proliferator responsive genes, and interacts with co-activators. Several essential fatty acids, oxidized lipids and prostaglandin J derivatives can bind and activate PPAR. Like other members of the nuclear receptor (NR) superfamily of ligand-activated transcription factors, PPAR has a central well conserved DNA binding domain (DBD), a variable N-terminal regulatory domain, a flexible hinge and a C-terminal ligand binding domain (LBD).

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 530400798 112 LCVVCGDKASGRHYGAVTCEGCKGFFKRSIRKNLVYS-CRGSkdCIINKHHRNRCQYCRLQRCIAFGMKQDSVQCERKPi 190
Cdd:cd06965    1 ECRVCGDKASGFHYGVHACEGCKGFFRRTIRLKLVYKpCDLS--CKIHKKSRNKCQYCRFQKCLNVGMSHNAIRFGRMP- 77

                 ....*.
gi 530400798 191 EVSREK 196
Cdd:cd06965   78 RVEKEK 83

DNA-binding domain of REV-ERB receptor-like is composed of two C4-type zinc fingers; DNA-binding domain of REV-ERB receptor- like is composed of two C4-type zinc fingers. Each zinc finger contains a group of four Cys residues which coordinates a single zinc atom. This domain interacts with specific DNA sites upstream of the target gene and modulates the rate of transcriptional initiation. REV-ERB receptors are transcriptional regulators belonging to the nuclear receptor superfamily. They regulate a number of physiological functions including the circadian rhythm, lipid metabolism, and cellular differentiation. REV-ERB receptors bind as a monomer to a (A/G)GGTCA half-site with a 5' AT-rich extension or as a homodimer to a direct repeat 2 element (AGGTCA sequence with a 2-bp spacer), indicating functional diversity. When bound to the DNA, they recruit corepressors (NcoR/histone deacetylase 3) to the promoter, resulting in repression of the target genes. The porphyrin heme has been demonstrated to function as a ligand for REV-ERB receptor. Like other members of the nuclear receptor (NR) superfamily of ligand-activated transcription factors, REV-ERB receptors have a central well conserved DNA binding domain (DBD), a variable N-terminal domain, a non-conserved hinge and a C-terminal ligand binding domain (LBD).

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 530400798 112 LCVVCGDKASGRHYGAVTCEGCKGFFKRSIRKNLVY-SCRGSKDCIINKHHRNRCQYCRLQRCIAFGMKQDSVQCERKPi 190
Cdd:cd07166    5 LCKVCGDKASGFHYGVHACEGCKGFFRRSIQQKIQYrKCTKNETCSIMRINRNRCQYCRFKKCLAVGMSRDAVRFGRIP- 83

                 ....*..
gi 530400798 191 evSREKS 197
Cdd:cd07166   84 --KREKA 88

The DNA-binding domain of Ecdysone receptor (EcR) like nuclear receptor family is composed of two C4-type zinc fingers; The DNA-binding domain of Ecdysone receptor (EcR) like nuclear receptor family is composed of two C4-type zinc fingers. Each zinc finger contains a group of four Cys residues which co-ordinates a single zinc atom. EcR interacts with specific DNA sites upstream of the target gene and modulates the rate of transcriptional initiation. This family includes three types of nuclear receptors: Ecdysone receptor (EcR), Liver X receptor (LXR) and Farnesoid X receptor (FXR). The DNA binding activity is regulated by their corresponding ligands. The ligands for EcR are ecdysteroids; LXR is regulated by oxidized cholesterol derivatives or oxysterols; and bile acids control FXR's activities. Like other members of the nuclear receptor (NR) superfamily of ligand-activated transcription factors, EcR-like receptors have a central well conserved DNA binding domain (DBD), a variable N-terminal domain, a flexible hinge and a C-terminal ligand binding domain (LBD).

                         10        20        30        40        50        60        70
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|..
gi 530400798 112 LCVVCGDKASGRHYGAVTCEGCKGFFKRSIRKNLVYSCRGSKDCIINKHHRNRCQYCRLQRCIAFGMKQDSV 183
Cdd:cd06959    1 NCVVCGDKASGFHYGVLSCEGCKGFFRRSVTKGAVYACKFGNKCEMDMYMRRKCQECRLRKCKAAGMRPDCL 72

DNA-binding domain of Ecdysone receptor (ECR) family is composed of two C4-type zinc fingers; DNA-binding domain of Ecdysone receptor (EcR) family is composed of two C4-type zinc fingers. Each zinc finger contains a group of four Cys residues which co-ordinates a single zinc atom. EcR interacts with highly degenerate pseudo-palindromic response elements, resembling inverted repeats of 5'-AGGTCA-3' separated by 1 bp, upstream of the target gene and modulates the rate of transcriptional initiation. EcR is present only in invertebrates and regulates the expression of a large number of genes during development and reproduction. EcR functions as a heterodimer by partnering with ultraspiracle protein (USP), the ortholog of the vertebrate retinoid X receptor (RXR). The natural ligands of EcR are ecdysteroids, the endogenous steroidal hormones found in invertebrates. Like other members of the nuclear receptor (NR) superfamily of ligand-activated transcription factors, EcRs have a central well conserved DNA binding domain (DBD), a variable N-terminal domain, a non-conserved hinge and a C-terminal ligand binding domain (LBD).

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 530400798 111 DLCVVCGDKASGRHYGAVTCEGCKGFFKRSIRKNLVYSCRGSKDCIINKHHRNRCQYCRLQRCIAFGMKQDSVQCE-RKP 189
Cdd:cd07161    2 ELCLVCGDRASGYHYNALTCEGCKGFFRRSVTKSAVYHCKYGRACEMDMYMRRKCQECRLKKCLSVGMRPECVVPEsQCA 81

                 ....*..
gi 530400798 190 IEVSREK 196
Cdd:cd07161   82 IKRREKK 88

The DNA-binding domain of vitamin D receptors (VDR) like nuclear receptor family is composed of two C4-type zinc fingers; The DNA-binding domain of vitamin D receptors (VDR) like nuclear receptor family is composed of two C4-type zinc fingers. Each zinc finger contains a group of four Cys residues which co-ordinates a single zinc atom. This domain interacts with specific DNA site upstream of the target gene and modulates the rate of transcriptional initiation. This family includes three types of nuclear receptors: vitamin D receptors (VDR), constitutive androstane receptor (CAR) and pregnane X receptor (PXR). VDR regulates calcium metabolism, cellular proliferation and differentiation. PXR and CAR function as sensors of toxic byproducts of cell metabolism and of exogenous chemicals, to facilitate their elimination. The DNA binding activity is regulated by their corresponding ligands. VDR is activated by Vitamin D; CAR and PXR respond to a diverse array of chemically distinct ligands, including many endogenous compounds and clinical drugs. Like other nuclear receptors, xenobiotic receptors have a central well conserved DNA binding domain (DBD), a variable N-terminal domain, a flexible hinge and a C-terminal ligand binding domain (LBD).

                         10        20        30        40        50        60        70
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|.
gi 530400798 113 CVVCGDKASGRHYGAVTCEGCKGFFKRSIRKNLVYSCRGSKDCIINKHHRNRCQYCRLQRCIAFGMKQDSV 183
Cdd:cd07156    1 CGVCGDRATGYHFNAMTCEGCKGFFRRSMKRKARFTCPFNGDCEITKDNRRHCQACRLKKCLDIGMKKEMI 71

The DNA-binding domain of peroxisome proliferator-activated receptors (PPAR) like nuclear receptor family; The DNA-binding domain of peroxisome proliferator-activated receptors (PPAR) like nuclear receptor family is composed of two C4-type zinc fingers. Each zinc finger contains a group of four Cys residues which co-ordinates a single zinc atom. These domains interact with specific DNA sites upstream of the target gene and modulate the rate of transcriptional initiation. This family includes three known types of nuclear receptors: peroxisome proliferator-activated receptors (PPAR), REV-ERB receptors and Drosophila ecdysone-induced protein 78 (E78). Like other members of the nuclear receptor (NR) superfamily of ligand-activated transcription factors, PPAR-like receptors have a central well conserved DNA binding domain (DBD), a variable N-terminal domain, a non-conserved hinge and a C-terminal ligand binding domain (LBD).

                         10        20        30        40        50        60        70
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|...
gi 530400798 113 CVVCGDKASGRHYGAVTCEGCKGFFKRSIRKNLVYS-CRGSKDCIINKHHRNRCQYCRLQRCIAFGMKQDSVQ 184
Cdd:cd07158    1 CKVCGDKASGFHYGVHSCEGCKGFFRRTIQHNLTYRrCLNGGKCVIQRKNRNRCQYCRFKKCLSVGMSRNAVR 73

DNA-binding domain of Farnesoid X receptor (FXR) family is composed of two C4-type zinc fingers; DNA-binding domain of Farnesoid X receptor (FXR) family is composed of two C4-type zinc fingers. Each zinc finger contains a group of four Cys residues which co-ordinates a single zinc atom. FXR interacts with specific DNA sites upstream of the target gene and modulates the rate of transcriptional initiation. FXR is a member of the nuclear receptor family of ligand activated transcription factors. Bile acids are endogenous ligands for FXRs. Upon binding of a ligand, FXR binds to FXR response element (FXRE), which is an inverted repeat of TGACCT spaced by one nucleotide, either as a monomer or as a heterodimer with retinoid X receptor (RXR), to regulate the expression of various genes involved in bile acid, lipid, and glucose metabolism. Like other members of the nuclear receptor (NR) superfamily of ligand-activated transcription factors, FXR has a central well conserved DNA binding domain (DBD), a variable N-terminal domain, a flexible hinge and a C-terminal ligand binding domain (LBD).

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 530400798 111 DLCVVCGDKASGRHYGAVTCEGCKGFFKRSIRKNLVYSCRGSKDCIINKHHRNRCQYCRLQRCIAFGMKQD----SVQCE 186
Cdd:cd06962    2 ELCVVCGDKASGYHYNALTCEGCKGFFRRSITKNAVYKCKNGGNCEMDMYMRRKCQECRLRKCKEMGMLAEclltEIQCK 81

                 ..
gi 530400798 187 RK 188
Cdd:cd06962   82 SK 83

DNA-binding domain of estrogen receptors (ER) is composed of two C4-type zinc fingers; DNA-binding domain of estrogen receptors (ER) is composed of two C4-type zinc fingers. Each zinc finger contains a group of four Cys residues which coordinates a single zinc atom. ER interacts with specific DNA sites upstream of the target gene and modulates the rate of transcriptional initiation. Estrogen receptor is a transcription regulator that mediates the biological effects of hormone estrogen. The binding of estrogen to the receptor triggers the dimerization and the binding of the receptor dimer to estrogen response element, which is a palindromic inverted repeat: 5'GGTCAnnnTGACC-3', of target genes. Through ER, estrogen regulates development, reproduction and homeostasis. Like other members of the nuclear receptor (NR) superfamily of ligand-activated transcription factors, ER has a central well-conserved DNA binding domain (DBD), a variable N-terminal domain, a non-conserved hinge and a C-terminal ligand binding domain (LBD).

                         10        20        30        40        50        60        70
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*..
gi 530400798 112 LCVVCGDKASGRHYGAVTCEGCKGFFKRSIRKNLVYSCRGSKDCIINKHHRNRCQYCRLQRCIAFGMKQDSVQCERK 188
Cdd:cd07171    5 FCAVCSDYASGYHYGVWSCEGCKAFFKRSIQGHNDYICPATNQCTIDKNRRKSCQACRLRKCYEVGMMKGGIRRERR 81

DNA-binding domain of Liver X receptors (LXRs) family is composed of two C4-type zinc fingers; DNA-binding domain of Liver X receptors (LXRs) family is composed of two C4-type zinc fingers. Each zinc finger contains a group of four Cys residues which co-ordinates a single zinc atom. LXR interacts with specific DNA sites upstream of the target gene and modulates the rate of transcriptional initiation. LXR operates as cholesterol sensor which protects cells from cholesterol overload by stimulating reverse cholesterol transport from peripheral tissues to the liver and its excretion in the bile. Oxidized cholesterol derivatives or oxysterols were identified as specific ligands for LXRs. LXR functions as a heterodimer with the retinoid X receptor (RXR) which may be activated by either LXR agonist or 9-cis retinoic acid, a specific RXR ligand. The LXR/RXR complex binds to a liver X receptor response element (LXRE) in the promoter region of target genes. The ideal LXRE sequence is a direct repeat-4 (DR-4) DNA fragment consisting of two AGGTCA hexameric half-sites separated by a 4-nucleotide spacer. LXR has typical NR modular structure with a central well conserved DNA binding domain (DBD), a variable N-terminal domain, a flexible hinge and the ligand binding domain (LBD) at the C-terminal.

                         10        20        30        40        50        60        70
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 530400798 111 DLCVVCGDKASGRHYGAVTCEGCKGFFKRSIRKNLVYSCRGSKDCIINKHHRNRCQYCRLQRCIAFGMKQDSVQCE 186
Cdd:cd07160   19 EVCSVCGDKASGFHYNVLSCEGCKGFFRRSVIKGAQYVCKNGGKCQMDMYMRRKCQECRLRKCREAGMREQCVLSE 94

DNA-binding domain of pregnane X receptor (PXRs) is composed of two C4-type zinc fingers; DNA-binding domain (DBD)of pregnane X receptor (PXR) is composed of two C4-type zinc fingers. Each zinc finger contains a group of four Cys residues which co-ordinates a single zinc atom. PXR DBD interacts with the PXR response element, a perfect repeat of two AGTTCA motifs with a 4 bp spacer upstream of the target gene, and modulates the rate of transcriptional initiation. The pregnane X receptor (PXR) is a ligand-regulated transcription factor that responds to a diverse array of chemically distinct ligands, including many endogenous compounds and clinical drugs. PXR functions as a heterodimer with retinoic X receptor-alpha (RXRa) and binds to a variety of promoter regions of a diverse set of target genes involved in the metabolism, transport, and ultimately, elimination of these molecules from the body. Like other nuclear receptors, PXR has a central well conserved DNA-binding domain, a variable N-terminal domain, a flexible hinge and a C-terminal ligand binding domain.

                         10        20        30        40        50        60        70
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 530400798 112 LCVVCGDKASGRHYGAVTCEGCKGFFKRSIRKNLVYSCRGSKDCIINKHHRNRCQYCRLQRCIAFGMKQD 181
Cdd:cd07162    1 ICRVCGDRATGYHFNAMTCEGCKGFFRRAMKRNARLCCPFQKGCVITKSNRRQCQACRLRKCLSIGMKKE 70

DNA-binding domain of glucocorticoid receptor (GR) is composed of two C4-type zinc fingers; DNA-binding domains of glucocorticoid receptor (GR) and progesterone receptor (PR) are composed of two C4-type zinc fingers. Each zinc finger contains a group of four Cys residues which co-ordinate a single zinc atom. The DBD from both receptors interact with the same hormone response element (HRE), which is an imperfect palindrome GGTACAnnnTGTTCT, upstream of target genes and modulates the rate of transcriptional initiation. GR is a transcriptional regulator that mediates the biological effects of glucocorticoids and PR regulates genes controlled by progesterone. GR is expressed in almost every cell in the body and regulates genes controlling a wide variety of processes including the development, metabolism, and immune response of the organism. PR functions in a variety of biological processes including development of the mammary gland, regulating cell cycle progression, protein processing, and metabolism. Like other members of the nuclear receptor (NR) superfamily of ligand-activated transcription factors, GR and PR have a central well conserved DNA binding domain (DBD), a variable N-terminal domain, a non-conserved hinge and a C-terminal ligand binding domain (LBD).

                         10        20        30        40        50        60
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*...
gi 530400798 112 LCVVCGDKASGRHYGAVTCEGCKGFFKRSIRKNLVYSCRGSKDCIINKHHRNRCQYCRLQRCIAFGMK 179
Cdd:cd07172    4 ICLVCSDEASGCHYGVLTCGSCKVFFKRAVEGQHNYLCAGRNDCIIDKIRRKNCPACRLRKCLQAGMN 71

The DNA binding domain of GR_like nuclear receptors is composed of two C4-type zinc fingers; The DNA binding domain of GR_like nuclear receptors is composed of two C4-type zinc fingers. Each zinc finger contains a group of four Cys residues which co-ordinates a single zinc atom. It interacts with specific DNA sites upstream of the target gene and modulates the rate of transcriptional initiation. This family of NRs includes four types of nuclear hormone receptors: glucocorticoid receptor (GR), mineralocorticoid receptor (MR), progesterone receptor (PR), and androgen receptor (AR). The receptors bind to common DNA elements containing a partial palindrome of the core sequence 5'-TGTTCT-3' with a 3bp spacer. These four receptors regulate some of the most fundamental physiological functions such as the stress response, metabolism, electrolyte homeostasis, immune function, growth, development, and reproduction. The NRs in this family have high sequence homology and share similar functional mechanisms. The dominant mechanism of function is by direct DNA binding and transcriptional regulation of target genes . The GR, MR, PR, and AR exhibit same modular structure. They have a central highly conserved DNA binding domain (DBD), a non-conserved N-terminal domain, a flexible hinge and a C-terminal ligand binding domain (LBD).

                         10        20        30        40        50        60
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*.
gi 530400798 113 CVVCGDKASGRHYGAVTCEGCKGFFKRSIRKNLVYSCRGSKDCIINKHHRNRCQYCRLQRCIAFGM 178
Cdd:cd06963    1 CLICGDEASGCHYGVLTCGSCKVFFKRAAEGQHNYLCAGRNDCIIDKIRRKNCPACRLRKCYQAGM 66

The ligand binding domain of DAX1 protein, a nuclear receptor lacking DNA binding domain; The ligand binding domain of the Small Heterodimer Partner (SHP): SHP is a member of the nuclear receptor superfamily. SHP has a ligand binding domain, but lacks the DNA binding domain, typical to almost all of the nuclear receptors. It functions as a transcriptional coregulator by directly interacting with other nuclear receptors through its AF-2 motif. The closest relative of SHP is DAX1 and they can form heterodimer. SHP is an orphan receptor, lacking an identified ligand.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 530400798 389 NVHYIGESASRLLFLSMHWALSIPSFQALGQENSISLVKAYWNELFTLGLAQ---CWQVMNVAT------ILATFVNCLH 459
Cdd:cd07349   20 TPHRTCREASDVLVKTVAFMRNLPSFWQLPPQDQLLLLQNCWGPLFLLGLAQdrvTFEVAEAPVpsmlkkILLEGQSSSG 99

                         90       100       110       120       130       140       150       160
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 530400798 460 NSLQQERRKLLMEHIFKLQEFCNSMVKLCIDGYEYAYLKAIVLFSPDHPSLENMEQIEKFQEKAYVEFQDYITKTYPDDT 539
Cdd:cd07349  100 GSGQPDRPQPSLAAVQWLQCCLNKFWSLDLSPKEYAYLKGTILFNPDVPGLTASSHVGHLQQEAQWALCEVLEPLHPQDQ 179

                        170       180       190       200
                 ....*....|....*....|....*....|....*....|...
gi 530400798 540 YRLSRLLLRLPALRLMNATITEELFFKGLIGNIRIDSVIPHIL 582
Cdd:cd07349  180 GRFARILLTASTLKSIPPSLITDLFFRPIIGDADIAELLGDML 222

The ligand binding domain of heptocyte nuclear factor 4, which is explosively expanded in nematodes; The ligand binding domain of hepatocyte nuclear factor 4 (HNF4) like proteins: HNF4 is a member of the nuclear receptor superfamily. HNF4 plays a key role in establishing and maintenance of hepatocyte differentiation in the liver. It is also expressed in gut, kidney, and pancreatic beta cells. HNF4 was originally classified as an orphan receptor, but later it is found that HNF4 binds with very high affinity to a variety of fatty acids. However, unlike other nuclear receptors, the ligands do not act as a molecular switch for HNF4. They seem to constantly bind to the receptor, which is constitutively active as a transcription activator. Like other members of the nuclear receptor (NR) superfamily of ligand-activated transcription factors, HNF4 has a central well conserved DNA binding domain (DBD), a variable N-terminal domain, a flexible hinge and a C-terminal ligand binding domain (LBD). The LBD domain is also responsible for recruiting co-activator proteins. More than 280 nuclear receptors are found in C. ele gans, most of which are originated from an explosive burst of duplications of HNF4.

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 530400798 395 ESASRLLFLSMHWALSIPSFQALGQENSISLVKAYWNELFTLGLAQcwQVMNVATI--LATFVNCLHNSLQQERRKLLME 472
Cdd:cd06931   39 ESMKQQLLVLVEWAKYIPAFCELPLDDQVALLRAHAGEHLLLGVAR--RSMPYKDIllLGNDLIIPRHCPEPEISRVANR 116

                         90       100       110       120       130       140
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*
gi 530400798 473 hifKLQEFCNSMVKLCIDGYEYAYLKAIVLFSPDHPSLENMEQIEKFQEKAYVEFQDYITKTYPD 537
Cdd:cd06931  117 ---ILDELVLPLRDLNIDDNEYACLKAIVFFDPDAKGLSDPQKIKRLRFQVQVSLEDYINDRQYD 178

Ligand-binding domain of nuclear receptor family 1; Ligand-binding domain (LBD) of nuclear receptor (NR) family 1: This is one of the major subfamily of nuclear receptors, including thyroid receptor, retinoid acid receptor, ecdysone receptor, farnesoid X receptor, vitamin D receptor, and other related receptors. Nuclear receptors form a superfamily of ligand-activated transcription regulators, which regulate various physiological functions, from development, reproduction, to homeostasis and metabolism in animals (metazoans). The family contains not only receptors for known ligands but also orphan receptors for which ligands do not exist or have not been identified. NRs share a common structural organization with a central well conserved DNA binding domain (DBD), a variable N-terminal domain, a flexible hinge and a C-terminal ligand binding domain (LBD).

                         10        20        30        40        50        60        70        80
                 ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 530400798 410 SIPSFQALGQENSISLVKAYWNELFTLGLAQCwqvMNVATILATFVNCLHNSLQQERRKLLMEHIFKLQEFCNSMVKLCI 489
Cdd:cd06929   24 RIPGFRELSQEDQIALLKGGCFEILLLRSATL---YDPEKNSLTFGDGKGNSRDVLLNGGFGEFIEPLFEFAEKMNKLQL 100