BTB (Broad-Complex, Tramtrack and Bric a brac)/POZ (poxvirus and zinc finger) domain found in RCC1 and BTB domain-containing protein 1 (RCBTB1); RCBTB1 is also called chronic lymphocytic leukemia deletion region gene 7 protein (CLLD7), CLL deletion region gene 7 protein, regulator of chromosome condensation and BTB domain-containing protein 1, or E4.5. It is a novel chromosome condensation regulator-like guanine nucleotide exchange factor that may be involved in cell cycle regulation by chromatin remodeling. It may also function as a tumor suppressor that regulates pathways of DNA damage/repair and apoptosis. RCBTB1 may also be a substrate adaptor for a cullin3 (CUL3) E3 ligase complex that mediates the ubiquitination and subsequent proteasomal degradation of target proteins. Biallelic mutations in RCBTB1 may cause isolated and syndromic retinal dystrophy. It contains an RCC1 repeat, a BTB domain, and a BACK domain. The BTB/POZ domain is a common protein-protein interaction motif of about 100 amino acids.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958680556 350 HEDFLTVAESLKKEFDSPETADLKFRIDGKYIHVHKAVLKIRCEHFRSMFQSYWNEDMKEVIEIDQFSYPVYRAFLQYLY 429
Cdd:cd18353     1 HDDFLTVAESLKKEFDSPETSDLKFRVDGKYIHVHKAVLKIRCEHFRTMFQSHWNEDMKEVIEIDQFSYPVYRAFLEYLY 80

                          90       100       110
                  ....*....|....*....|....*....|....*..
gi 1958680556 430 TDTVDLPPEDAIGLLDLATSYCENRLKRLCQHIIKRG 466
Cdd:cd18353    81 TDSVDLPPEDAIGLLDLATSYCENRLKKLCQHIIKRG 117

BACK (BTB and C-terminal Kelch) domain; The BACK domain is found in architectures C-terminal to a BTB domain, in a diverse set of architectures together with Kelch, MATH, and/or TAZ domains. It is involved in interactions with the Cullin3 (Cul3) ubiquitin ligase complex, as well as in homo-oligomerization. Most proteins containing the BACK domain are understood to function as adaptor proteins that play a role in ubiquitination of various substrates.

                          10        20        30        40
                  ....*....|....*....|....*....|....*....|....*
gi 1958680556 466 GITVENAFSLFSAAVRYDAETprIKVSCYKQQMSLPTEPSQLFLF 510
Cdd:cd18528     1 GITVENAFSLLSAAVRYDAED--LEEFCFKFCVNHLTEVTQTAAF 43

BTB (Broad-Complex, Tramtrack and Bric a brac)/POZ (poxvirus and zinc finger) domain found in RCC1 and BTB domain-containing protein 1 (RCBTB1); RCBTB1 is also called chronic lymphocytic leukemia deletion region gene 7 protein (CLLD7), CLL deletion region gene 7 protein, regulator of chromosome condensation and BTB domain-containing protein 1, or E4.5. It is a novel chromosome condensation regulator-like guanine nucleotide exchange factor that may be involved in cell cycle regulation by chromatin remodeling. It may also function as a tumor suppressor that regulates pathways of DNA damage/repair and apoptosis. RCBTB1 may also be a substrate adaptor for a cullin3 (CUL3) E3 ligase complex that mediates the ubiquitination and subsequent proteasomal degradation of target proteins. Biallelic mutations in RCBTB1 may cause isolated and syndromic retinal dystrophy. It contains an RCC1 repeat, a BTB domain, and a BACK domain. The BTB/POZ domain is a common protein-protein interaction motif of about 100 amino acids.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958680556 350 HEDFLTVAESLKKEFDSPETADLKFRIDGKYIHVHKAVLKIRCEHFRSMFQSYWNEDMKEVIEIDQFSYPVYRAFLQYLY 429
Cdd:cd18353     1 HDDFLTVAESLKKEFDSPETSDLKFRVDGKYIHVHKAVLKIRCEHFRTMFQSHWNEDMKEVIEIDQFSYPVYRAFLEYLY 80

                          90       100       110
                  ....*....|....*....|....*....|....*..
gi 1958680556 430 TDTVDLPPEDAIGLLDLATSYCENRLKRLCQHIIKRG 466
Cdd:cd18353    81 TDSVDLPPEDAIGLLDLATSYCENRLKKLCQHIIKRG 117

Broad-Complex, Tramtrack and Bric a brac; Domain in Broad-Complex, Tramtrack and Bric a brac. Also known as POZ (poxvirus and zinc finger) domain. Known to be a protein-protein interaction motif found at the N-termini of several C2H2-type transcription factors as well as Shaw-type potassium channels. Known structure reveals a tightly intertwined dimer formed via interactions between N-terminal strand and helix structures. However in a subset of BTB/POZ domains, these two secondary structures appear to be missing. Be aware SMART predicts BTB/POZ domains without the beta1- and alpha1-secondary structures.

                           10        20        30        40        50        60        70        80
                   ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958680556  371 DLKFRIDGKYIHVHKAVLKIRCEHFRSMFQSYWNEDMKEVIEIDQFSYPVYRAFLQYLYTDTVDLPPEDAIGLLDLATSY 450
Cdd:smart00225   1 DVTLVVGGKKFHAHKAVLAAHSPYFKALFSSDFKESDKSEIYLDDVSPEDFRALLNFLYTGKLDLPEENVEELLELADYL 80

                           90
                   ....*....|....*..
gi 1958680556  451 CENRLKRLCQHIIKRGI 467
Cdd:smart00225  81 QIPGLVELCEEFLLKLL 97

Regulator of chromosome condensation (RCC1) repeat;

                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|
gi 1958680556 199 SGEVYGWGYNGNGQLGLGNNGNQLTPVRVAALHGVCVNQIVCGYAHTLAL 248
Cdd:pfam00415   1 DGRVYTWGRNDYGQLGLGTTENVLVPQKVEGLSGNKVVQVACGGDHTVAL 50

kelch-like protein; Provisional

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958680556 374 FRIDGKYIHVHKAVLKIRCEHFRSMFQSywNEDMKEVIEidQFSYPVYRAFLQYLYTDTVDLPPEDAIGLLDLATSYCEN 453
Cdd:PHA03098   16 IVNGGGIIKVHKIILSSSSEYFKKMFKN--NFKENEINL--NIDYDSFNEVIKYIYTGKINITSNNVKDILSIANYLIID 91

                          90
                  ....*....|....*...
gi 1958680556 454 RLKRLCQHIIKRGITVEN 471
Cdd:PHA03098   92 FLINLCINYIIKIIDDNN 109

BTB (Broad-Complex, Tramtrack and Bric a brac)/POZ (poxvirus and zinc finger) domain found in RCC1 and BTB domain-containing protein 1 (RCBTB1); RCBTB1 is also called chronic lymphocytic leukemia deletion region gene 7 protein (CLLD7), CLL deletion region gene 7 protein, regulator of chromosome condensation and BTB domain-containing protein 1, or E4.5. It is a novel chromosome condensation regulator-like guanine nucleotide exchange factor that may be involved in cell cycle regulation by chromatin remodeling. It may also function as a tumor suppressor that regulates pathways of DNA damage/repair and apoptosis. RCBTB1 may also be a substrate adaptor for a cullin3 (CUL3) E3 ligase complex that mediates the ubiquitination and subsequent proteasomal degradation of target proteins. Biallelic mutations in RCBTB1 may cause isolated and syndromic retinal dystrophy. It contains an RCC1 repeat, a BTB domain, and a BACK domain. The BTB/POZ domain is a common protein-protein interaction motif of about 100 amino acids.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958680556 350 HEDFLTVAESLKKEFDSPETADLKFRIDGKYIHVHKAVLKIRCEHFRSMFQSYWNEDMKEVIEIDQFSYPVYRAFLQYLY 429
Cdd:cd18353     1 HDDFLTVAESLKKEFDSPETSDLKFRVDGKYIHVHKAVLKIRCEHFRTMFQSHWNEDMKEVIEIDQFSYPVYRAFLEYLY 80

                          90       100       110
                  ....*....|....*....|....*....|....*..
gi 1958680556 430 TDTVDLPPEDAIGLLDLATSYCENRLKRLCQHIIKRG 466
Cdd:cd18353    81 TDSVDLPPEDAIGLLDLATSYCENRLKKLCQHIIKRG 117

Alpha-tubulin suppressor ATS1 and related RCC1 domain-containing proteins [Cell cycle control, cell division, chromosome partitioning, Cytoskeleton];

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958680556  37 VTDSDEVFVFGLNYSNCLGTGDNQSTLVPKKLEALCGkrIKSLSYGSGpHVLLSTEDGVVYAWGHNGYSQLGNGTTNQGI 116
Cdd:COG5184    13 LKSDGTVWCWGDNSYGQLGDGTTTDRSTPVRVPGLSN--VVAVAAGGD-HTCALKADGTVWCWGNNSYGQLGDGTTTDRT 89

                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958680556 117 APIQVCTnllVKQVVEVACGSHHSMALAADGELFAWGYNNCGQVGSGSTANQPTPRKVTNCLhtKKVVNIACGQTSSMAV 196
Cdd:COG5184    90 TPVKVPG---LTGVVAVAAGYYHSCALKSDGTVWCWGDNSSGQLGDGTTTNRLTPVQVDAGL--SGVVAIAAGGYHTCAL 164

                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958680556 197 LDSGEVYGWGYNGNGQLGLGNNGNQLTPVRVAALHGvcVNQIVCGYAHTLALTDEGLLYAWGANTYGQLGTGSKNNLLSP 276
Cdd:COG5184   165 KSDGTVWCWGANSYGQLGDGTTTDRPTPVQVGGLSG--VVAVAAGGDHSCALKSDGTVWCWGSNSSGQLGDGTTTDRATP 242

                         250       260       270
                  ....*....|....*....|....*....|....*.
gi 1958680556 277 TQImVEKERVIEIAAchSTHTSAAKTQGGHVYMWGQ 312
Cdd:COG5184   243 VQV-AGLTGVVAIAA--GGSHTCALKSDGTVWCWGD 275

Alpha-tubulin suppressor ATS1 and related RCC1 domain-containing proteins [Cell cycle control, cell division, chromosome partitioning, Cytoskeleton];

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958680556  86 HVLLSTEDGVVYAWGHNGYSQLGNGTTNQGIAPIQVctnLLVKQVVEVACGSHHSMALAADGELFAWGYNNCGQVGSGST 165
Cdd:COG5184     9 HSCALKSDGTVWCWGDNSYGQLGDGTTTDRSTPVRV---PGLSNVVAVAAGGDHTCALKADGTVWCWGNNSYGQLGDGTT 85

                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958680556 166 ANQPTPRKVTNclhTKKVVNIACGQTSSMAVLDSGEVYGWGYNGNGQLGLGNNGNQLTPVRVAA-LHGvcVNQIVCGYAH 244
Cdd:COG5184    86 TDRTTPVKVPG---LTGVVAVAAGYYHSCALKSDGTVWCWGDNSSGQLGDGTTTNRLTPVQVDAgLSG--VVAIAAGGYH 160

                         170       180       190       200       210       220
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*..
gi 1958680556 245 TLALTDEGLLYAWGANTYGQLGTGSKNNLLSPTQIMvEKERVIEIAAchSTHTSAAKTQGGHVYMWG 311
Cdd:COG5184   161 TCALKSDGTVWCWGANSYGQLGDGTTTDRPTPVQVG-GLSGVVAVAA--GGDHSCALKSDGTVWCWG 224

BTB (Broad-Complex, Tramtrack and Bric a brac)/POZ (poxvirus and zinc finger) domain found in RCC1 and BTB domain-containing protein 2 (RCBTB2); RCBTB2 is also called chromosome condensation 1-like (CHC1-L), RCC1-like G exchanging factor, or regulator of chromosome condensation and BTB domain-containing protein 2. It is a chromosome condensation regulator-like guanine nucleotide exchange factor (GEF) protein for the Ras-related GTPase Ran. It contains an RCC1 repeat, a BTB domain, and a BACK domain. The BTB/POZ domain is a common protein-protein interaction motif of about 100 amino acids.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958680556 351 EDFLTVAESLKKEFDSPETADLKFRIDGKYIHVHKAVLKIRCEHFRSMFqsywNEDMKEVIEIDQFSYPVYRAFLQYLYT 430
Cdd:cd18354     2 DDHLTVAESLKREFDNPDTADLKFLVDGKYIYVHKVLLKIRCEHFRSLL----NENEEEIIEMSQFSYPVYRAFLEYLYT 77

                          90       100       110       120
                  ....*....|....*....|....*....|....*....|
gi 1958680556 431 DTVDLPPEDAIGLLDLATSYCENRLKRLCQHIIKRGITVE 470
Cdd:cd18354    78 DSISLSPEDAIGLLDLATFYRENRLKKLCQQTIKQGICEE 117

BTB (Broad-Complex, Tramtrack and Bric a brac)/POZ (poxvirus and zinc finger) domain found in Ankyrin repeat and BTB/POZ domain-containing protein 2 (ABTB2) and similar proteins; This family includes ABTB2, BTBD11, plant ARM repeat protein interacting with ABF2 (ARIA), and similar proteins. ABTB2, also called bood POZ containing gene type 2 (BPOZ-2), is a scaffold protein that controls the degradation of many biological proteins ranging from embryonic development to tumor progression. It may be involved in the initiation of hepatocyte growth. ABTB2 functions as an adaptor protein for the E3 ubiquitin ligase scaffold protein Cullin-3. It directly binds to eukaryotic elongation factor 1A1 (eEF1A1) to promote eEF1A1 ubiquitylation and degradation, and prevent translation. The BTBD11 gene has been recently identified as an all-trans retinoic acid (atRA)-responsive gene that lies downstream of atRA and its receptors in the regulation of neurite outgrowth and cell adhesion in neural as well as non-neural tissues. ARIA is an armadillo (ARM) repeat and BTB domain-containing protein that acts as a positive regulator of ABA response via the modulation of the transcriptional activity of ABF2. The BTB/POZ domain is a common protein-protein interaction motif of about 100 amino acids.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958680556 364 FDSPETADLKFRIDGKYIHVHKAVLKIRCEHFRSMFQSYWNEDMKEVIEIDQFSYPVYRAFLQYLYT---DTVDLPPEDA 440
Cdd:cd18297     7 VNNPEMSDVTFLVEGRPFYAHKIVLVTASDRFKSMLSSGSTEAQTPVIEIPDIRYDIFQLMMQYLYTggvESLDVAQDDA 86

                          90       100       110
                  ....*....|....*....|....*....|.
gi 1958680556 441 IGLLDLATSYCENRLKRLCQHIIKRGITVEN 471
Cdd:cd18297    87 LELLRAASFFQLDGLKRHCEILLSQQIDLDN 117

BTB (Broad-Complex, Tramtrack and Bric a brac)/POZ (poxvirus and zinc finger) domain found in zinc finger and BTB domain-containing (ZBTB) proteins, Kelch-like (KLHL) proteins, and similar proteins; This family includes a variety of BTB/POZ domain-containing proteins, such as zinc finger and BTB domain-containing (ZBTB) proteins and Kelch-like (KLHL) proteins. They have diverse functions, such as transcriptional regulation, chromatin remodeling, protein degradation and cytoskeletal regulation. Many BTB/POZ proteins contain one or two additional domains, such as kelch repeats, zinc-finger domains, FYVE (Fab1, YOTB, Vac1, and EEA1) fingers, or ankyrin repeats. These special additional domains or interaction partners provide unique characteristics and functions to BTB/POZ proteins. The BTB/POZ domain is a common protein-protein interaction motif of about 100 amino acids.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958680556 370 ADLKFRIDGKYIHVHKAVLKIRCEHFRSMFQSYWNEDMKEVIEIDQFSYPVYRAFLQYLYTDTVDLPPEDAIGLLDLATS 449
Cdd:cd18186     2 CDVTLVVGGREFPAHRAVLAARSPYFRAMFSSGMKESSSSEIELDDVSPEAFEALLDYIYTGELELSEENVEELLAAADK 81

                  .
gi 1958680556 450 Y 450
Cdd:cd18186    82 L 82

second BTB (Broad-Complex, Tramtrack and Bric a brac)/POZ (poxvirus and zinc finger) domain found in Rho-related BTB domain-containing proteins (RhoBTB); RhoBTB proteins constitute a subfamily of atypical members within the Rho family of small guanosine triphosphatases (GTPases), which is characterized by containing a GTPase domain (in most cases, non-functional) followed by a proline-rich region, a tandem of 2 BTB domains, and a conserved C-terminal region. In humans, the RhoBTB subfamily consists of 3 isoforms: RhoBTB1, RhoBTB2, and RhoBTB3. Orthologs are present in several other eukaryotes, such as Drosophila and Dictyostelium, but have been lost in plants and fungi. This model corresponds to the second BTB domain. The BTB/POZ domain is a common protein-protein interaction motif of about 100 amino acids.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958680556 364 FDSPETADLKFRIDGKYIHVHKAVLKIRCEHFRSMFQSYWNEDMKEVIEIDQFSYPVYRAFLQYLYTDTV-DLPPEDAIG 442
Cdd:cd18300     4 LNKGLFSDVTFIVEDGTIPAHKALLVARCDVMAAMFGGNFRESSAKEVELPGVSKETFLALLEYLYTDQApILEDGDCVG 83

                          90       100
                  ....*....|....*....|...
gi 1958680556 443 LLDLATSYCENRLKRLC-QHIIK 464
Cdd:cd18300    84 LIVLANRLCLPRLVALCeQYIVK 106

second BTB (Broad-Complex, Tramtrack and Bric a brac)/POZ (poxvirus and zinc finger) domain found in BTB/POZ domain-containing protein 8 (BTBD8); BTBD8 is a BTB-domain-containing Kelch-like protein that may play a role in developmental processes. It may also act as a protein-protein adaptor in a transcription complex and thus be involved in brain development. BTBD8 contains two BTB domains. This model corresponds to the second domain. The BTB/POZ domain is a common protein-protein interaction motif of about 100 amino acids.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958680556 357 AESLKKEFDSPETADLKFRIDGKYIHVHKAVLKIRCEHFRSMFQSYWNEDMKEVIEIDQFSYPVYRAFLQYLYTDTVDLP 436
Cdd:cd18286     5 GKDLLQLFLNGEDSDITIKVDGKTFKAHRCILCARSSYFAAMLSGSWAESNSSEITLTGVSHAAVSFVLLFIYGGVLDLP 84

                          90       100       110
                  ....*....|....*....|....*....|
gi 1958680556 437 PEDAIG-LLDLATSYCENRLKRLCQHIIKR 465
Cdd:cd18286    85 DDVNLGeLLSLADMYGLDGLKDVVAYTLRR 114

second BTB (Broad-Complex, Tramtrack and Bric a brac)/POZ (poxvirus and zinc finger) domain found in Ankyrin repeat and BTB/POZ domain-containing protein 1 (ABTB1); ABTB1, also called elongation factor 1A-binding protein or bood POZ containing gene type 1 (BPOZ-1), is an anti-proliferative factor that may act as a mediator of the phosphatase and tensin homolog (PTEN) growth-suppressive signaling pathway. It may play a role in developmental processes. ABTB1 contains an ankyrin repeat and two BTB domains. This model corresponds to the second BTB domain. The BTB/POZ domain is a common protein-protein interaction motif of about 100 amino acids.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958680556 365 DSPETADLKFRIDGKYIHVHKAVLKIRCEHFRSMFQSYWNEDMKE-----VIEIDQFSYPVYRAFLQYLYTDTVDLPPED 439
Cdd:cd18296    13 QELSFPDVCFQVEGHRFPCHKAFFCGRSDYFKALLRDHFAESEENngsipVVTLHDVSPEVFAIVLYYIYTDDTDLPPEN 92

                          90       100
                  ....*....|....*....|....
gi 1958680556 440 AIGLLDLATSYCENRLKRLCQHII 463
Cdd:cd18296    93 AYDVLYVADMYLLPGLKRLCGTVL 116

second BTB (Broad-Complex, Tramtrack and Bric a brac)/POZ (poxvirus and zinc finger) domain found in leucine-zipper-like transcriptional regulator 1 (LZTR-1); LZTR-1 is a golgi BTB-kelch protein that is degraded upon induction of apoptosis. It may also function as a transcriptional regulator that plays a crucial role in embryogenesis. Germline loss-of-function mutations in LZTR-1 predispose to an inherited disorder of multiple schwannomas. LZTR-1 contains two BTB domains. This model corresponds to the second domain. The BTB/POZ domain is a common protein-protein interaction motif of about 100 amino acids.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958680556 351 EDFLtvaESLKKEFdspetADLKFRIDGKYIHVHKAVLKIRCEHFRSMFQSYWNEDMKEVIEIDQFSyPVYRAF---LQY 427
Cdd:cd18309    10 EAFL---ESVGGDF-----CDITLLLDGHPIPAHKAILAARCSYFEAMFRSFMPEDNTVNISIGEMV-PSRQAFdslLRY 80

                          90       100       110       120
                  ....*....|....*....|....*....|....*....|....*.
gi 1958680556 428 LYTDTVDLPPEDAIGLLDLATSY--CENRLKRLCQHIIKRGITVEN 471
Cdd:cd18309    81 IYYGDVTMPPEDSLYLFSAPYFYgfTNNRLQAYCKQNLEMNVSFEN 126

second BTB (Broad-Complex, Tramtrack and Bric a brac)/POZ (poxvirus and zinc finger) domain found in Rho-related BTB domain-containing protein 3 (RhoBTB3); RhoBTB3 is an atypical Rho family small guanosine triphosphatase (GTPase) and is a member of the RhoBTB subfamily, which is characterized by containing a GTPase domain (in most cases, non-functional) followed by a proline-rich region, tandem BTB domains, and a conserved C-terminal region. The carboxyl terminal extension that harbors two BTB domains is capable of assembling cullin 3-dependent ubiquitin ligase complexes. RhoBTB3 is a Golgi-associated Rho-related ATPase that regulates the S/G2 transition of the cell cycle by targeting cyclin E for ubiquitylation. It is involved in vesicle trafficking and in targeting proteins for degradation in the proteasome. It binds directly to Rab9 GTPase and functions with Rab9 in protein transport from endosomes to the trans Golgi network. It also promotes proteasomal degradation of Hypoxia-inducible factor alpha (HIFalpha) through facilitating hydroxylation and suppresses the Warburg effect. This model corresponds to the second BTB domain. The BTB/POZ domain is a common protein-protein interaction motif of about 100 amino acids.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958680556 360 LKKEFDSPETADLKFRIDGKYIHVHKAVLKIRCEHFRSMFQSYWNEDMKEVIEIDQFSYPVYRAFLQYLYTDTVdLPPE- 438
Cdd:cd18360     1 LGLFFNSPLLADVVFKIQGTTVPAHRAVLVARCEVMAAMFNGNYAEAKSFLVPIYGVSKDTFLSFLEYLYTDSC-CPASi 79

                          90       100
                  ....*....|....*....|....*.
gi 1958680556 439 -DAIGLLDLATSYCENRLKRLCQHII 463
Cdd:cd18360    80 lQAMALLICAEMYQVSRLQHICELYI 105

BTB (Broad-Complex, Tramtrack and Bric a brac)/POZ (poxvirus and zinc finger) domain found in plant BTB/POZ-MATH (BPM) protein family; The BPM protein family includes Arabidopsis thaliana BTB/POZ and MATH domain-containing proteins, AtBPM1-6, and similar proteins from other plants. BPM protein, also called protein BTB-POZ and MATH domain, may act as a substrate-specific adaptor of an E3 ubiquitin-protein ligase complex (CUL3-RBX1-BTB) which mediates the ubiquitination and subsequent proteasomal degradation of target proteins. The BTB/POZ domain is a common protein-protein interaction motif of about 100 amino acids.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958680556 360 LKKEFDSPETADLKFRIDGKYIHVHKAVLKIRCEHFRSMFQSYWNEDMKEVIEIDQFSYPVYRAFLQYLYTDTV------ 433
Cdd:cd18280     5 FGALLESEEGADVTFNVDGEKFRAHKLVLAARSPVFRSMLFGPMREENEGEIVIEDVEPPVFKALLHFIYKDELpddvep 84

                          90       100       110
                  ....*....|....*....|....*....|...
gi 1958680556 434 ------DLPPEDAIGLLDLATSYCENRLKRLCQ 460
Cdd:cd18280    85 agsdssSLDTTMAQHLLAAADRYALERLRLLCE 117

first BTB (Broad-Complex, Tramtrack and Bric a brac)/POZ (poxvirus and zinc finger) domain found in Ankyrin repeat and BTB/POZ domain-containing protein 1 (ABTB1); ABTB1, also called elongation factor 1A-binding protein or bood POZ containing gene type 1 (BPOZ-1), is an anti-proliferative factor that may act as a mediator of the phosphatase and tensin homolog (PTEN) growth-suppressive signaling pathway. It may play a role in developmental processes. ABTB1 contains an ankyrin repeat and two BTB domains. This model corresponds to the first BTB domain. The BTB/POZ domain is a common protein-protein interaction motif of about 100 amino acids.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958680556 358 ESLKKEFDSPETADLKFRIDGKYIHVHKAVLKIRCEHFRSMFQSYWNEdmKEVIEIDQ--FSYPVYRAFLQYLYTDTVDL 435
Cdd:cd18295     8 EFLRRLLEQGSYSDVTFNVHGESFPAHRCILSARSPYFAEMFETKWKD--KREINLKHplVNPDAFRALLQYLYTGRLEI 85

                          90
                  ....*....|..
gi 1958680556 436 PPEDAIGLLDLA 447
Cdd:cd18295    86 HVDDVEDCKRLA 97

Regulator of chromosome condensation (RCC1) repeat;

                          10        20        30        40        50
                  ....*....|....*....|....*....|....*....|....*....|.
gi 1958680556 146 DGELFAWGYNNCGQVGSGSTANQPTPRKVTNcLHTKKVVNIACGQTSSMAV 196
Cdd:pfam00415   1 DGRVYTWGRNDYGQLGLGTTENVLVPQKVEG-LSGNKVVQVACGGDHTVAL 50

BTB (Broad-Complex, Tramtrack and Bric a brac)/POZ (poxvirus and zinc finger) domain found in rabankyrin-5 (Rank-5); Rank-5, also called ankyrin repeat and FYVE domain-containing protein 1 (ANKFY1) or ankyrin repeats hooked to a zinc finger motif (ANKHZN), is a Rab5 effector that regulates and coordinates different endocytic mechanisms. It contains an N-terminal BTB domain, followed by a BACK domain, several ankyrin (ANK) repeats and a C-terminal FYVE domain. The BTB/POZ domain is a common protein-protein interaction motif of about 100 amino acids.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958680556 364 FDSPETADLKFRIDGKYIHVHKAVLKIRcehfrsmfQSYW-NEDMKEVIEID--QFSYPVYRAFLQYLYTDTVDLPPED- 439
Cdd:cd18303    13 FDKELYSDITIKLADKSIPAHKFVLAAR--------SEKWsNENLASTNELDlsDISYEVVLALLRWLYTDELDLTLDDe 84

                          90       100       110
                  ....*....|....*....|....*....|...
gi 1958680556 440 -AIGLLDLATSYCENRLKRLCQHIIKRGITVEN 471
Cdd:cd18303    85 fLLELMKAAKRFQLTDLVERCERALMSSVNVDN 117

BTB (Broad-Complex, Tramtrack and Bric a brac)/POZ (poxvirus and zinc finger) domain found in speckle-type POZ protein (SPOP) and similar proteins; This family includes speckle-type POZ protein (SPOP), speckle-type POZ protein-like (SPOPL), TD and POZ domain-containing proteins (TDPOZ), Drosophila melanogaster protein roadkill and similar proteins. Both, SPOP and SPOPL, serve as adaptors of cullin-RING-based BCR (BTB-CUL3-RBX1) E3 ubiquitin-protein ligase complexes that mediate the ubiquitination and proteasomal degradation of target proteins. TDPOZ is a family of bipartite animal and plant proteins that contain a tumor necrosis factor receptor-associated factor (TRAF) domain (TD) and a POZ/BTB domains. TDPOZ proteins may be nuclear scaffold proteins probably involved in transcription regulation in early development and other cellular processes. Drosophila melanogaster protein roadkill, also called Hh-induced MATH and BTB domain-containing protein (HIB), is a hedgehog-induced BTB protein that modulates hedgehog signaling by degrading Ci/Gli transcription factor. The BTB/POZ domain is a common protein-protein interaction motif of about 100 amino acids.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958680556 356 VAESLKKEFDSPETADLKFRIDGKYIHVHKAVLKIRCEHFRSMFQSYWNEDMKEVIEIDQFSYPVYRAFLQYLYTDTVDL 435
Cdd:cd18279     5 LAEDLGNLWENSRFTDCCLCVGGQEFQAHKAILAARSPVFSAMFEHEMEESKKNRVEINDVDPEVFKEMMRFIYTGKAPN 84

                          90       100       110
                  ....*....|....*....|....*....|....*.
gi 1958680556 436 PPEDAIGLLDLATSYCENRLKRLCQHIIKRGITVEN 471
Cdd:cd18279    85 LDKMADDLLAAADKYALERLKVMCEDALCSNLSVEN 120

BTB (Broad-Complex, Tramtrack and Bric a brac)/POZ (poxvirus and zinc finger) domain found in Ankyrin repeat and BTB/POZ domain-containing protein 2 (ABTB2); ABTB2, also called bood POZ containing gene type 2 (BPOZ-2), is a scaffold protein that controls the degradation of many biological proteins with various functions ranging from embryonic development to tumor progression. It may be involved in the initiation of hepatocyte growth. It inhibits the aggregation of alpha-synuclein, with implications for Parkinson's disease. ABTB2 functions as an adaptor protein for the E3 ubiquitin ligase scaffold protein Cullin-3. It directly binds to eukaryotic elongation factor 1A1 (eEF1A1) to promote eEF1A1 ubiquitylation and degradation, and prevent translation. It is also involved in the growth suppressive effect of the phosphatase and tensin homolog (PTEN). It contains an ankyrin repeat, BTB/POZ, and BACK domains. The BTB/POZ domain is a common protein-protein interaction motif of about 100 amino acids.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958680556 368 ETADLKFRIDGKYIHVHKAVLKIRCEHFRSMF--QSYWNEDMKEVIEIDQFSYPVYRAFLQYLY---TDTVDLPPEDAIG 442
Cdd:cd18350    23 EMSDVTFLVEGKLFYAHKVLLVTASNRFKSLLtnKSEQESQGSKTIEISDIKYHIFQMLMQYLYyggTESMEIPIADVLE 102

                          90       100       110
                  ....*....|....*....|....*....|..
gi 1958680556 443 LLDLATSYCENRLKRLCQHIIKRGITVENAFS 474
Cdd:cd18350   103 LLSAASLFQLDALQRHCEILCSQTINLENAVN 134

BTB (Broad-Complex, Tramtrack and Bric a brac) /POZ (poxvirus and zinc finger) domain found in Dictyostelium discoideum trishanku and similar proteins; Trishanku is a novel regulator required for normal morphogenesis and cell-type stability in Dictyostelium discoideum. It contains a BTB domain. The BTB/POZ domain is a common protein-protein interaction motif of about 100 amino acids.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958680556 364 FDSPETADLKFRIDGKYIHVHKAVLKIRCEHFRSMFQSYWNEDMKEVIEIDQFSYPVYRAFLQYLYTDTVDLPPEDAIGL 443
Cdd:cd18314     1 YNDSEFSDVVLCVGDRKFFAHRIVLCARSPVFRSMLTGSMIESNLKEVTLEDVEPEIFETVLKYMYTGQVTLSEENVLDL 80

                          90
                  ....*....|....*.
gi 1958680556 444 LDLATSYCENRLKRLC 459
Cdd:cd18314    81 LMLASKYQVPDLEKLC 96

Regulator of chromosome condensation (RCC1) repeat;

                          10        20        30
                  ....*....|....*....|....*....|
gi 1958680556 130 VVEVACGSHHSMALAADGELFAWGYNNCGQ 159
Cdd:pfam13540   1 VVSVAAGDNHTLALTSDGRVYCWGDNSYGQ 30

BTB (Broad-Complex, Tramtrack and Bric a brac)/POZ (poxvirus and zinc finger) domain found in Kelch repeat and BTB domain-containing protein 4 (KBTBD4); KBTBD4, also called BTB and kelch domain-containing protein 4 (BKLHD4), is a BTB-BACK-Kelch domain protein belonging to a large family of cullin-RING ubiquitin ligase adaptors that facilitate the ubiquitination of target substrates. The BTB/POZ domain is a common protein-protein interaction motif of about 100 amino acids.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958680556 370 ADLKFRIDGKYIHVHKAVLKIRCEHFRSMFQSYWNEDMKEVIEIDQFSYPVYRAFLQYLYTDTVDLPPEDAIGLLDLATS 449
Cdd:cd18272    33 ADVTISVEGKEFQLHRLVLSAQSCFFRSMFTSNLKEARNRVIELKDVSESVFQLLVDYIYHGTVKLRVEELQETYEVADM 112

                          90       100
                  ....*....|....*....|..
gi 1958680556 450 YCENRLKRLCQHIIKRGITVEN 471
Cdd:cd18272   113 YQLTALFEECSRFLARTVQVRN 134

BTB (Broad-Complex, Tramtrack and Bric a brac)/POZ (poxvirus and zinc finger) domain found in speckle-type POZ protein (SPOP); SPOP, also called HIB homolog 1 or Roadkill homolog 1, is a novel nuclear speckle-type protein which serves as an adaptor of a cullin-RING-based BCR (BTB-CUL3-RBX1) E3 ubiquitin-protein ligase complex that mediates the ubiquitination and proteasomal degradation of target proteins, such as BRMS1, DAXX, PDX1/IPF1, GLI2 and GLI3. The BTB/POZ domain is a common protein-protein interaction motif of about 100 amino acids.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958680556 356 VAESLKKEFDSPETADLKFRIDGKYIHVHKAVLKIRCEHFRSMFQSYWNEDMKEVIEIDQFSYPVYRAFLQYLYTDTVDL 435
Cdd:cd18342     9 LADELGGLWENSRFTDCCLCVAGQEFQAHKAILAARSPVFSAMFEHEMEESKKNRVEINDVEPEVFKEMMCFIYTGKAPN 88

                          90       100       110
                  ....*....|....*....|....*....|....*..
gi 1958680556 436 PPEDAIGLLDLATSYCENRLKRLCQHIIKRGITVENA 472
Cdd:cd18342    89 LDKMADDLLAAADKYALERLKVMCEDALCSNLSVENA 125

first BTB (Broad-Complex, Tramtrack and Bric a brac)/POZ (poxvirus and zinc finger) domain found in Rho-related BTB domain-containing proteins (RhoBTB); RhoBTB proteins constitute a subfamily of atypical members within the Rho family of small guanosine triphosphatases (GTPases), which is characterized by containing a GTPase domain (in most cases, non-functional) followed by a proline-rich region, tandem BTB domains, and a conserved C-terminal region. In vertebrates, the RhoBTB subfamily consists of 3 isoforms: RhoBTB1, RhoBTB2, and RhoBTB3. Orthologs are present in several other eukaryotes, such as Drosophila and Dictyostelium, but have been lost in plants and fungi. This model corresponds to the first BTB domain. The BTB/POZ domain is a common protein-protein interaction motif of about 100 amino acids.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 1958680556 358 ESLKKEFDSPETADLKFRIDGKY-IHVHKAVLKIRCEHFRSMFQsywneDMKEVIEIDQFSYPVYRAFLQYLYTDTVDLP 436
Cdd:cd18299     1 EDLRNLLHSPSCADVVFILQGGVrIFAHRIVLAAASSVFADLFL-----MMTVVTLDSDITPEAFRRVLEFLYTGVLDEN 75

                          90       100
                  ....*....|....*....|....*...
gi 1958680556 437 PEDAIGLLDLA--------TSYCENRLK 456
Cdd:cd18299    76 EDDLKELKDAAellelfdlVMMCTNVLN 103