cellular retinol-binding protein 1; Cellular retinol-binding proteins (CRBPs) participate in the cellular uptake of vitamin A in the form of free retinol. Retinol achieves a higher chemical stability when bound to CRBPs, and its interaction with retinol-binding proteins allows the solubilization in the aqueous medium of the hydrophobic retinol molecule. There are four human CRBP types (CRBP1, -2, -3, -4) which differ in their tissue-specific expression pattern, as well as in their different ligand affinities. CRBP1 (also known as Retinol-Binding Protein 1, CRBP, RBPC, CRBP1, CRBPI, CRABP-I) is widely expressed in numerous tissues: it has highest abundance in the liver, kidney, lung, and retinal pigment epithelium cells of the eye. CRBP1 has a high affinity for retinol. It accepts retinol transported from the plasma to cytosol via a cell surface receptor named STRA6, which interacts with serum retinol-binding protein. CRBP1 can bind all-trans-retinol, all trans-retinal and 13-cis-retinol, but not 9-cis-retinol. CRBPs belong to the intracellular fatty acid-binding protein (FABP) family, members of which are small proteins that bind hydrophobic ligands in a non-covalent, reversible manner, and, besides CRBPS, include the cellular retinoic acid-binding proteins (CRABPs) and the fatty acid-binding proteins (FABPs).

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2007576577   5 DMNGYWKMTSNENFDEYMEALDVNVVIRKIASYLILDKEIVQNGDHLYIKTLTTFRNYDMEFDVGKEFEEDLVGVDDRKC 84
Cdd:cd19462     1 DFNGYWKMLSNENFEEYLRALDVNVALRKIANLLKPDKEIVQDGDHMIIRTLSTFRNYIMDFQVGKEFEEDLTGIDDRKC 80

                          90       100       110       120       130
                  ....*....|....*....|....*....|....*....|....*....|.
gi 2007576577  85 MTTVNWEEDKLVCVQKGEKEGRGWTQWVKGDELHVEMRVCGVVCKQVFKRQ 135
Cdd:cd19462    81 MTTVSWDGDKLQCVQKGEKEGRGWTQWIEGDELHLEMRVEGVVCKQVFKKV 131

cellular retinol-binding protein 1; Cellular retinol-binding proteins (CRBPs) participate in the cellular uptake of vitamin A in the form of free retinol. Retinol achieves a higher chemical stability when bound to CRBPs, and its interaction with retinol-binding proteins allows the solubilization in the aqueous medium of the hydrophobic retinol molecule. There are four human CRBP types (CRBP1, -2, -3, -4) which differ in their tissue-specific expression pattern, as well as in their different ligand affinities. CRBP1 (also known as Retinol-Binding Protein 1, CRBP, RBPC, CRBP1, CRBPI, CRABP-I) is widely expressed in numerous tissues: it has highest abundance in the liver, kidney, lung, and retinal pigment epithelium cells of the eye. CRBP1 has a high affinity for retinol. It accepts retinol transported from the plasma to cytosol via a cell surface receptor named STRA6, which interacts with serum retinol-binding protein. CRBP1 can bind all-trans-retinol, all trans-retinal and 13-cis-retinol, but not 9-cis-retinol. CRBPs belong to the intracellular fatty acid-binding protein (FABP) family, members of which are small proteins that bind hydrophobic ligands in a non-covalent, reversible manner, and, besides CRBPS, include the cellular retinoic acid-binding proteins (CRABPs) and the fatty acid-binding proteins (FABPs).

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2007576577   5 DMNGYWKMTSNENFDEYMEALDVNVVIRKIASYLILDKEIVQNGDHLYIKTLTTFRNYDMEFDVGKEFEEDLVGVDDRKC 84
Cdd:cd19462     1 DFNGYWKMLSNENFEEYLRALDVNVALRKIANLLKPDKEIVQDGDHMIIRTLSTFRNYIMDFQVGKEFEEDLTGIDDRKC 80

                          90       100       110       120       130
                  ....*....|....*....|....*....|....*....|....*....|.
gi 2007576577  85 MTTVNWEEDKLVCVQKGEKEGRGWTQWVKGDELHVEMRVCGVVCKQVFKRQ 135
Cdd:cd19462    81 MTTVSWDGDKLQCVQKGEKEGRGWTQWIEGDELHLEMRVEGVVCKQVFKKV 131

cellular retinol-binding protein 1; Cellular retinol-binding proteins (CRBPs) participate in the cellular uptake of vitamin A in the form of free retinol. Retinol achieves a higher chemical stability when bound to CRBPs, and its interaction with retinol-binding proteins allows the solubilization in the aqueous medium of the hydrophobic retinol molecule. There are four human CRBP types (CRBP1, -2, -3, -4) which differ in their tissue-specific expression pattern, as well as in their different ligand affinities. CRBP1 (also known as Retinol-Binding Protein 1, CRBP, RBPC, CRBP1, CRBPI, CRABP-I) is widely expressed in numerous tissues: it has highest abundance in the liver, kidney, lung, and retinal pigment epithelium cells of the eye. CRBP1 has a high affinity for retinol. It accepts retinol transported from the plasma to cytosol via a cell surface receptor named STRA6, which interacts with serum retinol-binding protein. CRBP1 can bind all-trans-retinol, all trans-retinal and 13-cis-retinol, but not 9-cis-retinol. CRBPs belong to the intracellular fatty acid-binding protein (FABP) family, members of which are small proteins that bind hydrophobic ligands in a non-covalent, reversible manner, and, besides CRBPS, include the cellular retinoic acid-binding proteins (CRABPs) and the fatty acid-binding proteins (FABPs).

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2007576577   5 DMNGYWKMTSNENFDEYMEALDVNVVIRKIASYLILDKEIVQNGDHLYIKTLTTFRNYDMEFDVGKEFEEDLVGVDDRKC 84
Cdd:cd19462     1 DFNGYWKMLSNENFEEYLRALDVNVALRKIANLLKPDKEIVQDGDHMIIRTLSTFRNYIMDFQVGKEFEEDLTGIDDRKC 80

                          90       100       110       120       130
                  ....*....|....*....|....*....|....*....|....*....|.
gi 2007576577  85 MTTVNWEEDKLVCVQKGEKEGRGWTQWVKGDELHVEMRVCGVVCKQVFKRQ 135
Cdd:cd19462    81 MTTVSWDGDKLQCVQKGEKEGRGWTQWIEGDELHLEMRVEGVVCKQVFKKV 131

cellular retinol-binding protein 3; Cellular retinol-binding proteins (CRBPs) participate in the cellular uptake of vitamin A in the form of free retinol. Retinol achieves a higher chemical stability when bound to CRBPs, and its interaction with retinol-binding proteins allows the solubilization in the aqueous medium of the hydrophobic retinol molecule. There are four human CRBP types (CRBP1, -2, -3, -4) which differ in their tissue-specific expression pattern, as well as in their different ligand affinities. This group includes human CRBP3 (also known as retinol-binding protein 5, HRBPiso) which is expressed at highest levels in kidney and liver. CRBP3 binds retinol, and may be a human intracellular carrier of retinol in such tissues. CRBPs belong to the intracellular fatty acid-binding protein (FABP) family, members of which are small proteins that bind hydrophobic ligands in a non-covalent, reversible manner, and, besides CRBPS, include the cellular retinoic acid-binding proteins (CRABPs) and the fatty acid-binding proteins (FABPs).

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2007576577   5 DMNGYWKMTSNENFDEYMEALDVNVVIRKIASYLILDKEIVQNGDHLYIKTLTTFRNYDMEFDVGKEFEEDLVGVDDRKC 84
Cdd:cd19464     1 NLTGYYRFVSQDNMEDYLQALNVNMALRKIVLLLKPDKEIEHQGNHMTVRTLSTFRNYVMDFDLGVEFEEDLRSVDGRKC 80

                          90       100       110       120       130
                  ....*....|....*....|....*....|....*....|....*....|
gi 2007576577  85 MTTVNWEEDKLVCVQKGEKEGRGWTQWVKGDELHVEMRVCGVVCKQVFKR 134
Cdd:cd19464    81 QTTVTWEEEKLVCVQKGEVPNRGWRHWLEGEMLHLELTARDAVCKQVFRK 130

cellular retinol-binding protein 2; Cellular retinol-binding proteins (CRBPs) participate in the cellular uptake of vitamin A in the form of free retinol. Retinol achieves a higher chemical stability when bound to CRBPs, and its interaction with retinol-binding proteins allows the solubilization in the aqueous medium of the hydrophobic retinol molecule. There are four human CRBP types (CRBP1, -2, -3, -4) which differ in their tissue-specific expression pattern, as well as in their different ligand affinities. CRBP2 is also known as: "retinol-binding protein 2, cellular", CRABP-II, CRBP2, CRBPII, and RBPC2. Expression of CRBP2 is limited to the small intestine. CRBP2 binds both retinol and retinal; rat CRBP2 appears to bind both with equal affinity, human CRBP2 showed a significantly higher affinity for retinol relative to retinal. CRBP2 can bind all-trans-retinol, all trans-retinal and 13-cis-retinol, but not 9-cis-retinol. CRBPs belong to the intracellular fatty acid-binding protein (FABP) family, members of which are small proteins that bind hydrophobic ligands in a non-covalent, reversible manner, and, besides CRBPS, include the cellular retinoic acid-binding proteins (CRABPs) and the fatty acid-binding proteins (FABPs).

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2007576577   5 DMNGYWKMTSNENFDEYMEALDVNVVIRKIASYLILDKEIVQNGDHLYIKTLTTFRNYDMEFDVGKEFEEDLVGVDDRKC 84
Cdd:cd19463     1 DQNGTWEMESNENFEGYMKALDIDFATRKIAVRLTQTKVIDQDGDNFKTKTTSTFRNYDVDFTVGVEFDEYTKSLDNRHV 80

                          90       100       110       120       130
                  ....*....|....*....|....*....|....*....|....*....|.
gi 2007576577  85 MTTVNWEEDKLVCVQKGEKEGRGWTQWVKGDELHVEMRVCGVVCKQVFKRQ 135
Cdd:cd19463    81 KALVTWEGDVLVCVQKGEKENRGWKQWIEGDKLYLELTCGDQVCRQVFKKK 131

cellular retinoic acid-binding protein 1; Cellular retinoic acid-binding proteins (CRABPs) play a role in the metabolism of vitamin A and retinoic acid. They bind all trans retinoic acid, but not retinol. Retinol, the alcohol form of vitamin A, is an essential dietary nutrient. Within the cell, it gets oxidized into its biologically active acid form, retinoic acid, which interacts with the nuclear receptors (RARs and RXRs). The two CRABPs (CRABP1 AND CRABP2) differ in their pattern of expression across cells and developmental stages. Like other lipid binding proteins, CRABPs serve to solubilize and protect their ligand in the aqueous cytosol and transport retinoic acid between cellular compartments. This subgroup includes CRABP1 (also known as CRABP, CRABP-I, CRABPI, RBP5), which is thought to play an important role in retinoic acid-mediated differentiation and proliferation processes. CRABP1 has been shown to modulate stem cell proliferation to affect learning and memory. It has also been shown to regulate CaMKII, excessive and/or persistent activation of which is detrimental in acute and chronic cardiac injury. CRABPs belong to the intracellular fatty acid-binding protein (FABP) family, members of which are small proteins that bind hydrophobic ligands in a non-covalent, reversible manner, and besides CRABPS include the cellular retinol-binding protein (CRBPs) and the fatty acid-binding proteins (FABPs).

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2007576577   8 GYWKMTSNENFDEYMEALDVNVVIRKIASYLILDK--EIVQNGDHLYIKTLTTFRNYDMEFDVGKEFEEDLvgVDDRKCM 85
Cdd:cd19460     5 GTWKMRSSENFDELLKALGVNAMLRKVAVAAASKPhvEIRQDGDQFYIKTSTTVRTTEINFKVGEEFEEET--VDGRKCR 82

                          90       100       110       120       130
                  ....*....|....*....|....*....|....*....|....*....|....
gi 2007576577  86 TTVNWE-EDKLVCVQ---KGEKEGRGWTQWVKGDELHVEMRVCGVVCKQVFKRQ 135
Cdd:cd19460    83 SLPTWEnENKIYCKQtlvEGDGPKTYWTRELANDELILTFGADDVVCTRIYVRE 136

fatty acid-binding protein ReP1-NCXSQ and similar proteins; Arthropod ReP1-NCXSQ (regulatory protein of the squid nerve sodium calcium exchanger) is required for MgATP stimulation of the squid nerve Na(+)/Ca(2+) exchanger NCXSQ1. ReP1-NCXSQ acts as a carrier of fatty acids; is possible that its biological ligand is palmitic acid, which is abundant in squid axons. The mechanism for fine-tuning of the regulation of NCXSQ1 by ReP1-NCXSQ may then involve the transport of palmitic acid. This subgroup belongs to the intracellular fatty acid-binding protein (FABP) family, members of which are small proteins that bind hydrophobic ligands in a non-covalent, reversible manner, and have been implicated in intracellular uptake, transport and storage of hydrophobic ligands, regulation of lipid metabolism and sequestration of excess toxic fatty acids, as well as in signaling, gene expression, inflammation, cell growth and proliferation, and cancer development.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2007576577   5 DMNGYWKMTSNENFDEYMEALDVNVVIRKIASYLILDKEIVQNGDHLYIKTLTTFRNYDMEFDVGKEFEEDLvgVDDRKC 84
Cdd:cd19449     1 DLAGKWILESSENFDEFMKALGVGMVMRKMGNAATPTVEIKIDGDSWSLKTSTTFKTTEIKFKLGQEFDETT--GDGRKI 78

                          90       100       110       120       130
                  ....*....|....*....|....*....|....*....|....*....|.
gi 2007576577  85 MTTVNWEEDKLVCVQKGEKEGRG-WTQWVKGDELHVEMRVCGVVCKQVFKR 134
Cdd:cd19449    79 KTTCTIDGNKLIQDQKGSKGKDSiLTREFKDGQMHMILKVDDVVCTRIYKR 129

fatty acid-binding protein 3 and similar proteins including FABP4, -5, -7, -8, -9, -11, and -12; This FABP3-like subfamily includes FABP3, -4, -5, -7, -8, -9, -11, -12, and similar proteins and belongs to the intracellular fatty acid-binding protein (FABP) family, members of which are small proteins that bind hydrophobic ligands in a non-covalent, reversible manner, and have been implicated in intracellular uptake, transport and storage of hydrophobic ligands, regulation of lipid metabolism and sequestration of excess toxic fatty acids, as well as in signaling, gene expression, inflammation, cell growth and proliferation, and cancer development.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2007576577   8 GYWKMTSNENFDEYMEALDVNVVIRKIASYLILDKEIVQNGDHLYIKTLTTFRNYDMEFDVGKEFEEdlVGVDDRKCMTT 87
Cdd:cd19443     4 GTWKLVSSDNFDEYMKALGVGFATRKLGNLAKPTVIISVDGDKITIKTESTFKNTEISFKLGEEFDE--TTADGRKTKST 81

                          90       100       110       120
                  ....*....|....*....|....*....|....*....|....*..
gi 2007576577  88 VNWEEDKLVCVQKGEKEGRGWTQWVKGDELHVEMRVCGVVCKQVFKR 134
Cdd:cd19443    82 VTLDNGKLVQVQKWDGKETTIVRELKDGKLVVTCTMGDVVCTRTYEK 128

fatty acid binding protein 8; FABP8 (also known as peripheral myelin protein 2, PMP2, myelin fatty acid binding protein, M-FABP, myelin P2 protein, MP2) is a fatty acid-binding structural component of the myelin sheath in the peripheral nervous system and may play a role in lipid transport and homeostasis in myelin. It may bind cholesterol which is present in myelin at high concentrations. In addition to binding momomeric ligands, P2 is able to bind membrane surfaces, and to stack lipid bilayers together. This subgroup belongs to the intracellular fatty-acid binding protein (FABP) family, members of which are small proteins that bind hydrophobic ligands in a non-covalent, reversible manner, and have been implicated in intracellular uptake, transport and storage of hydrophobic ligands, regulation of lipid metabolism and sequestration of excess toxic fatty acids, as well as in signaling, gene expression, inflammation, cell growth and proliferation, and cancer development.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2007576577   8 GYWKMTSNENFDEYMEALDVNVVIRKIASYLILDKEIVQNGDHLYIKTLTTFRNYDMEFDVGKEFEEdlVGVDDRKCMTT 87
Cdd:cd19469     5 GTWKLVSSENFDDYMKALGVGLATRKLGNLAKPTVIISKKGDIITIRTESTFKNTEISFKLGQEFEE--TTADNRKTKST 82

                          90       100       110       120
                  ....*....|....*....|....*....|....*....|....*...
gi 2007576577  88 VNWEEDKLVCVQKGE-KEGRGWTQWVKGdELHVEMRVCGVVCKQVFKR 134
Cdd:cd19469    83 VTLARGSLNQVQKWNgKETTIKRKLVDG-KMVVECKMKGVVCTRIYEK 129

fatty acid-binding protein similar to Locusta migratoria FABP (Lm-FABP); This subfamily includes fatty acid-binding protein found mainly in insects such as the migratory locust (Locusta migratoria) FABP (Lm-FABP) and the desert locust (Schistocerca gregaria) FABP (Sg-FABP), having flight muscle tissues that contain unusually high levels FABP, similar to migratory birds. Both Sg- and Lm-FABP are closely related to the mammalian i-LBP subfamily IV, especially to the heart and adipocyte FABP forms. This subgroup belongs to the intracellular fatty-acid binding protein (FABP) family, members of which are small proteins that bind hydrophobic ligands in a non-covalent, reversible manner, and have been implicated in intracellular uptake, transport and storage of hydrophobic ligands, regulation of lipid metabolism and sequestration of excess toxic fatty acids, as well as in signaling, gene expression, inflammation, cell growth and proliferation, and cancer development.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2007576577  10 WKMTSNENFDEYMEALDVNVVIRKIASYLILDKEIVQNGDHLYIKTLTTFRNYDMEFDVGKEFEEDLvgVDDRKCMTTVN 89
Cdd:cd19852     7 YKLDSSENFDEYMKAIGVGLITRKAGNALTPVVELELEDGTYTLTTSTTFKTTEFKFKLGEEFDEET--LDGRKVKSIIT 84

                          90       100       110       120
                  ....*....|....*....|....*....|....*....|....*...
gi 2007576577  90 WEEDKLVCVQKGEKEgrgwTQWVK---GDELHVEMRVCGVVCKQVFKR 134
Cdd:cd19852    85 FDGNKLVQEQKGDHP----TIIIRefsKEEMKAVLTAGDVVCTRVYKA 128

fatty acid binding protein 3; FABP3 (also known as heart-type fatty acid binding protein, H-FABP, MDGI, O-FABP) is a cytosolic protein mainly expressed in cardiac and skeletal muscle cells. In these tissues, it plays an important role in fatty acid transportation, cell growth, cell signaling, and gene transcription. This subgroup belongs to the intracellular fatty-acid binding protein (FABP) family, members of which are small proteins that bind hydrophobic ligands in a non-covalent, reversible manner, and have been implicated in intracellular uptake, transport and storage of hydrophobic ligands, regulation of lipid metabolism and sequestration of excess toxic fatty acids, as well as in signaling, gene expression, inflammation, cell growth and proliferation, and cancer development.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2007576577   8 GYWKMTSNENFDEYMEALDVNVVIRKIASYLILDKEIVQNGDHLYIKTLTTFRNYDMEFDVGKEFEEdlVGVDDRKCMTT 87
Cdd:cd19466     4 GTWKLVDSKNFDEYMKALGVGFATRQVGNMTKPTTIIEVDGDKVTLKTQSTFKNTEISFKLGEEFDE--TTADDRKVKSL 81

                          90       100       110       120
                  ....*....|....*....|....*....|....*....|....*..
gi 2007576577  88 VNWEEDKLVCVQKGEKEGRGWTQWVKGDELHVEMRVCGVVCKQVFKR 134
Cdd:cd19466    82 VTLDGGKLVHVQKWDGKETTLVREVSDGKLILTLTLGDVVSTRTYEK 128

fatty acid binding protein 5; FABP5 (also known as epidermal FABP, E-FABP, cutaneous fatty-acid-binding protein, C-FABP, psoriasis-associated fatty-acid-binding protein, KFABP, PA-FABP) binds a wide array of ligands. It is an intracellular carrier for long-chain fatty acids and related active lipids, and also selectively delivers specific fatty acids from the cytosol to the nucleus. Its ligands include vitamin A metabolite all-trans-retinoic acid, endocannabinoid and numerous synthetic drugs and probes. It may be involved in keratinocyte differentiation. Mouse FABP5 is found only in the monomeric form; however, human FABP5 can exist as a monomer as well as a domain-swapped dimer. This subgroup belongs to the intracellular fatty-acid binding protein (FABP) family, members of which are small proteins that bind hydrophobic ligands in a non-covalent, reversible manner, and have been implicated in intracellular uptake, transport and storage of hydrophobic ligands, regulation of lipid metabolism and sequestration of excess toxic fatty acids, as well as in signaling, gene expression, inflammation, cell growth and proliferation, and cancer development.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2007576577   5 DMNGYWKMTSNENFDEYMEALDVNVVIRKIASYLILDKEIVQNGDHLYIKTLTTFRNYDMEFDVGKEFEEDLvgVDDRKC 84
Cdd:cd19468     1 DLEGKWRLMESHGFDEYMKELGVGLALRKMGAMAKPDCIITCDGNNITVKTESTVKTTQFSCNLGEKFEETT--ADGRKT 78

                          90       100       110       120       130
                  ....*....|....*....|....*....|....*....|....*....|
gi 2007576577  85 MTTVNWEEDKLVCVQKGEKEGRGWTQWVKGDELHVEMRVCGVVCKQVFKR 134
Cdd:cd19468    79 QTVCTFQDGALVQHQEWDGKESTITRKLKDGKLVVECVMNNATCTRVYEK 128

fatty acid binding protein 9 and similar proteins; FABP9 (also known as testis-FABP, T-FABP, PERF15) is a major protein found in the inner acrosomal membrane and outer face of the nuclear envelope of mammalian sperm. Its expression is increased in prostate cancer. This subgroup belongs to the intracellular fatty-acid binding protein (FABP) family, members of which are small proteins that bind hydrophobic ligands in a non-covalent, reversible manner, and have been implicated in intracellular uptake, transport and storage of hydrophobic ligands, regulation of lipid metabolism and sequestration of excess toxic fatty acids, as well as in signaling, gene expression, inflammation, cell growth and proliferation, and cancer development.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2007576577   8 GYWKMTSNENFDEYMEALDVNVVIRKIASYLILDKEIVQNGDHLYIKTLTTFRNYDMEFDVGKEFEEdlVGVDDRKCMTT 87
Cdd:cd19471     6 GTWKLVSSENFENYVKELGVEFAARNVAGLIKPTVTISFNGEMMTIQTGSACRNTKISFKLGEEFDE--TTADNRKVKSL 83

                          90
                  ....*....|...
gi 2007576577  88 VNWEEDKLVCVQK 100
Cdd:cd19471    84 ITLENGSMIHVQK 96

fatty acid-binding protein similar to Manduca sexta and Eriocheir sinensis fatty acid-binding protein 1; This subfamily includes fatty acid-binding protein found mainly in insects such as Manduca sexta FABP1 (also known as MFB1) and Luciola cerata FABP (LcFABP), and crustacea such as Eriocheir sinensis FABP (Es-FABP). MFB1, which is isolated from midgut cytosol, binds fatty acids in a 1:1 molar ratio. LcFABP, abundantly and specifically expressed in the cytosol as well as the nucleus of cells of the photogenic layer of firefly light organ, binds fatty acids of length C14-C18. Es-FABP plays a role in lipid transport during the period of rapid ovarian growth and is involved in lipid nutrient absorption and utilization processes in the hepatopancreas, ovary, and hemocytes. It is also expressed in gills, muscle, thoracic ganglia, heart, and intestine. This subgroup belongs to the intracellular fatty acid-binding protein (FABP) family, members of which are small proteins that bind hydrophobic ligands in a non-covalent, reversible manner, and have been implicated in intracellular uptake, transport and storage of hydrophobic ligands, regulation of lipid metabolism and sequestration of excess toxic fatty acids, as well as in signaling, gene expression, inflammation, cell growth and proliferation, and cancer development.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2007576577   7 NGYWKMTSNENFDEYMEALDV-NVVIRKIASYLIlDKEIVQNGDHLYIKTLTTFRNYDMEFDVGKEFEEDLVGvdDRKCM 85
Cdd:cd19448     3 AGKYQLEKNENFEEFLKALGIpADLAKKLLQYKP-SLEVSQNGDKYTFKSTSGDKTKTNTFKLGVEFEETLPG--GREFK 79

                          90       100       110       120       130
                  ....*....|....*....|....*....|....*....|....*....|.
gi 2007576577  86 TTVNWEEDKLVCVQKGEKEGRGWTQWVKGDELHVEM--RVCGVVCKQVFKR 134
Cdd:cd19448    80 SVTTLEGNTLTQTSKFGGKKGTRTYEFSDDGLVVTLtsNKWDGKAKRYYKR 130

Lipocalin / cytosolic fatty-acid binding protein family; Lipocalins are transporters for small hydrophobic molecules, such as lipids, steroid hormones, bilins, and retinoids. The family also encompasses the enzyme prostaglandin D synthase (EC:5.3.99.2). Alignment subsumes both the lipocalin and fatty acid binding protein signatures from PROSITE. This is supported on structural and functional grounds. The structure is an eight-stranded beta barrel.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2007576577   7 NGYWKMTSNENF---DEYMEALDVNVVIRKI-ASYLILDKEIVQNGDHLyIKTLTTFRNYDMEFDVGKEFEEDLvgvDDR 82
Cdd:pfam00061   1 SGKWYLIASANFnelEEEMKALGVGFATIKVlENGNLPVTEITKEGGKC-KTVSVTFKKTEEPGKLGVEFDEYA---GGR 76

                          90       100       110
                  ....*....|....*....|....*....|....*..
gi 2007576577  83 KCMtTVNWE-EDKLVCVQKGEKEGR-GWTQWVKGDEL 117
Cdd:pfam00061  77 KVK-VLTTDyDNYLIFYQKGDKDGKtTIVRELYGRDP 112

fatty acid-binding protein 6; Human fatty acid-binding protein 6 (also known as gastrotropin, I-15P, I-BABP, I-BALB, I-BAP, ILBP, ILBP3, ileal bile acid-binding protein, ILLBP, "ileal lipid-binding protein) is an intracellular carrier of bile salts in the epithelial cells of the distal small intestine and has a key role in the enterohepatic circulation of bile salts. It recognizes a series of physiological bile salts that vary in the number and position of steroidal hydroxyl groups, and the presence and type of side-chain conjugation. This subgroup belongs to the intracellular fatty acid-binding protein (FABP) family, members of which are small proteins that bind hydrophobic ligands in a non-covalent, reversible manner, and have been implicated in intracellular uptake, transport and storage of hydrophobic ligands, regulation of lipid metabolism and sequestration of excess toxic fatty acids, as well as in signaling, gene expression, inflammation, cell growth and proliferation, and cancer development.

                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2007576577   7 NGYWKMTSNENFDEYMEALDVNV-VIRKIASYLILdKEIVQNG-DHLYIKTLTTFRNYDMEFDVGKefEEDLVGVDDRKC 84
Cdd:cd19446     3 TGKYEIESEKNYDEFMKLIGIPSdVIEKGRNFKIV-TEVVQNGqDFTWSQHYPGGHTMTNKFTIGK--ESDMETMGGKKF 79

                          90
                  ....*....|..
gi 2007576577  85 MTTVNWEEDKLV 96
Cdd:cd19446    80 KATVQMEGGKLV 91