P45844 (ABCG1_HUMAN) Reviewed, UniProtKB/Swiss-Prot
Last modified
January 25, 2012.
Version 128.
History...
Names·Attributes·General annotation·Ontologies·Alt products·Sequence annotation·Sequences·References·Cross-refs·Entry info·DocumentsCustomize order
Names·Attributes·General annotation·Ontologies·Alt products·Sequence annotation·Sequences·References·Cross-refs·Entry info·DocumentsCustomize orderNames and origin
| Protein names | Recommended name: ATP-binding cassette sub-family G member 1 Alternative name(s): ATP-binding cassette transporter 8 White protein homolog | ||||
| Gene names |
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| Organism | Homo sapiens (Human) | ||||
| Taxonomic identifier | 9606 [NCBI] | ||||
| Taxonomic lineage | Eukaryota › Metazoa › Chordata › Craniata › Vertebrata › Euteleostomi › Mammalia › Eutheria › Euarchontoglires › Primates › Haplorrhini › Catarrhini › Hominidae › Homo |
Protein attributes
| Sequence length | 678 AA. |
| Sequence status | Complete. |
| Protein existence | Evidence at transcript level |
General annotation (Comments)
| Function | Transporter involved in macrophage lipid homeostasis. Is an active component of the macrophage lipid export complex. Could also be involved in intracellular lipid transport processes. The role in cellular lipid homeostasis may not be limited to macrophages. Ref.9 Ref.10 |
| Subunit structure | May form heterodimers with several heterologous partners of the ABCG subfamily. |
| Subcellular location | Endoplasmic reticulum membrane; Multi-pass membrane protein. Golgi apparatus membrane; Multi-pass membrane protein. Note: Predominantly localized in the intracellular compartments mainly associated with the endoplasmic reticulum (ER) and Golgi membranes. |
| Tissue specificity | Expressed in several tissues. Expressed in macrophages; expression is increased in macrophages from patients with Tangier disease. Ref.13 |
| Induction | Strongly induced in monocyte-derived macrophages during cholesterol influx. Conversely, mRNA and protein expression are suppressed by lipid efflux. Induction is mediated by the liver X receptor/retinoid X receptor (LXR/RXR) pathway. Not induced by bacterial lipopolysaccharides (LPS). Repressed by ZNF202. Ref.9 Ref.10 Ref.11 |
| Sequence similarities | Belongs to the ABC transporter superfamily. ABCG family. Eye pigment precursor importer (TC 3.A.1.204) subfamily. [View classification] Contains 1 ABC transmembrane type-2 domain. Contains 1 ABC transporter domain. |
| Sequence caution | The sequence AAC51098.1 differs from that shown. Reason: Erroneous initiation. Translation N-terminally extended. The sequence AAK28841.1 differs from that shown. Reason: Erroneous initiation. Translation N-terminally extended. The sequence BAA95530.1 differs from that shown. Reason: Erroneous initiation. Translation N-terminally extended. The sequence BAB13728.2 differs from that shown. Reason: Erroneous initiation. Translation N-terminally extended. The sequence CAA62631.1 differs from that shown. Reason: Erroneous initiation. Translation N-terminally extended. The sequence CAC00730.1 differs from that shown. Reason: Erroneous initiation. Translation N-terminally extended. |
Ontologies
Alternative products
| This entry describes 8 isoforms produced by alternative splicing. [Align] [Select] Note: Additional isoforms seem to exist. | ||||||
| Isoform 1 (identifier: P45844-1) This isoform has been chosen as the 'canonical' sequence. All positional information in this entry refers to it. This is also the sequence that appears in the downloadable versions of the entry. | ||||||
| Isoform 2 (identifier: P45844-2) Also known as: J; The sequence of this isoform differs from the canonical sequence as follows: 1-14: MACLMAAFSVGTAM → MRISLPRAPERDGGVSASSLLDTVT 375-386: Missing. | ||||||
| Isoform 3 (identifier: P45844-3) Also known as: ABDE; The sequence of this isoform differs from the canonical sequence as follows: 1-14: MACLMAAFSVGTAM → MLGTQGWTKQRKPCPQ 375-386: Missing. | ||||||
| Isoform 4 (identifier: P45844-4) Also known as: G; The sequence of this isoform differs from the canonical sequence as follows: 375-386: Missing. | ||||||
| Isoform 5 (identifier: P45844-5) Also known as: F; The sequence of this isoform differs from the canonical sequence as follows: 1-14: MACLMAAFSVGTAM → MIMRLPQPHGT 375-386: Missing. | ||||||
| Isoform 6 (identifier: P45844-6) Also known as: HI; The sequence of this isoform differs from the canonical sequence as follows: 1-4: Missing. 375-386: Missing. | ||||||
| Isoform 7 (identifier: P45844-7) Also known as: C; The sequence of this isoform differs from the canonical sequence as follows: 1-22: Missing. 375-386: Missing. | ||||||
| Isoform 8 (identifier: P45844-8) The sequence of this isoform differs from the canonical sequence as follows: 1-95: MACLMAAFSV...VPEGPWWRKK → MVRRGWSVCT...WGFPGDPMEE |
Sequence annotation (Features)
| Feature key | Position(s) | Length | Description | Graphical view | Feature identifier | ||||
Molecule processing | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Chain | 1 – 678 | 678 | ATP-binding cassette sub-family G member 1 | PRO_0000093384 | |||||
Regions | |||||||||
| Topological domain | 1 – 426 | 426 | Cytoplasmic Potential | ||||||
| Transmembrane | 427 – 445 | 19 | Helical; Potential | ||||||
| Topological domain | 446 – 456 | 11 | Extracellular Potential | ||||||
| Transmembrane | 457 – 477 | 21 | Helical; Potential | ||||||
| Topological domain | 478 – 506 | 29 | Cytoplasmic Potential | ||||||
| Transmembrane | 507 – 525 | 19 | Helical; Potential | ||||||
| Topological domain | 526 – 533 | 8 | Extracellular Potential | ||||||
| Transmembrane | 534 – 555 | 22 | Helical; Potential | ||||||
| Topological domain | 556 – 567 | 12 | Cytoplasmic Potential | ||||||
| Transmembrane | 568 – 586 | 19 | Helical; Potential | ||||||
| Topological domain | 587 – 649 | 63 | Extracellular Potential | ||||||
| Transmembrane | 650 – 669 | 20 | Helical; Potential | ||||||
| Topological domain | 670 – 678 | 9 | Cytoplasmic Potential | ||||||
| Domain | 77 – 317 | 241 | ABC transporter | ||||||
| Domain | 415 – 673 | 259 | ABC transmembrane type-2 | ||||||
| Nucleotide binding | 118 – 125 | 8 | ATP Potential | ||||||
Natural variations | |||||||||
| Alternative sequence | 1 – 95 | 95 | MACLM…WWRKK → MVRRGWSVCTAILLARLWCL VPTHTFLSEYPEAAEYPHPG WVYWLQMAVAPGHLRAWVMR NNVTTNIPSAFSGTLTHEEK AVLTVFTGTATAVHVQVAAL ASAKLESSVFVTDCVSCKIE NVCDSALQGKRVPMSGLQGS SIVIMPPSNRPLASAASCTW SVQVQGGPHHLGVVAISGKV LSAAHGAGRAYGWGFPGDPM EE in isoform 8. | VSP_010718 | |||||
| Alternative sequence | 1 – 22 | 22 | Missing in isoform 7. | VSP_000050 | |||||
| Alternative sequence | 1 – 14 | 14 | MACLM…VGTAM → MRISLPRAPERDGGVSASSL LDTVT in isoform 2. | VSP_000047 | |||||
| Alternative sequence | 1 – 14 | 14 | MACLM…VGTAM → MLGTQGWTKQRKPCPQ in isoform 3. | VSP_000048 | |||||
| Alternative sequence | 1 – 14 | 14 | MACLM…VGTAM → MIMRLPQPHGT in isoform 5. | VSP_000049 | |||||
| Alternative sequence | 1 – 4 | 4 | Missing in isoform 6. | VSP_000046 | |||||
| Alternative sequence | 375 – 386 | 12 | Missing in isoform 2, isoform 3, isoform 4, isoform 5, isoform 6 and isoform 7. | VSP_000051 | |||||
| Natural variant | 668 | 1 | F → L. Ref.5 | VAR_012279 | |||||
Experimental info | |||||||||
| Sequence conflict | 38 | 1 | S → T in AAK28839. Ref.4 | ||||||
| Sequence conflict | 38 | 1 | S → T in AAK28841. Ref.4 | ||||||
| Sequence conflict | 448 | 1 | A → T in CAA62631. Ref.1 | ||||||
| Sequence conflict | 448 | 1 | A → T in AAK28838. Ref.4 | ||||||
| Sequence conflict | 448 | 1 | A → T in AAK28839. Ref.4 | ||||||
| Sequence conflict | 448 | 1 | A → T in AAK28840. Ref.4 | ||||||
| Sequence conflict | 448 | 1 | A → T in AAK28841. Ref.4 | ||||||
| Sequence conflict | 448 | 1 | A → T in AAK28842. Ref.4 | ||||||
| Sequence conflict | 448 | 1 | A → T in AAL06598. Ref.5 | ||||||
| Sequence conflict | 533 | 1 | R → A in AAC51098. Ref.8 | ||||||
Sequences
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References
| « Hide 'large scale' references | |
| [1] | "Cloning of the cDNA for a human homologue of the Drosophila white gene and mapping to chromosome 21q22.3." Chen H.M., Rossier C., Lalioti M.D., Lynn A., Chakravarti A., Perrin G., Antonarakis S.E. Am. J. Hum. Genet. 59:66-75(1996) [PubMed: 8659545] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] OF 3-678 (ISOFORMS 1 AND 4). Tissue: Retina. |
| [2] | "Refined localization of autosomal recessive nonsyndromic deafness DFNB10 locus using 34 novel microsatellite markers, genomic structure, and exclusion of six known genes in the region." Berry A., Scott H.S., Kudoh J., Talior I., Korostishevsky M., Wattenhofer M., Guipponi M., Barras C., Rossier C., Shibuya K., Wang J., Kawasaki K., Asakawa S., Minoshima S., Shimizu N., Antonarakis S.E., Bonne-Tamir B. Genomics 68:22-29(2000) [PubMed: 10950923] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA] (ISOFORM 1). |
| [3] | "The zinc finger protein 202 (ZNF202) is a transcriptional repressor of ATP binding cassette transporter A1 (ABCA1) and ABCG1 gene expression and a modulator of cellular lipid efflux." Porsch-Oezcueruemez M., Langmann T., Heimerl S., Borsukova H., Kaminski W.E., Drobnik W., Honer C., Schumacher C., Schmitz G. J. Biol. Chem. 276:12427-12433(2001) [PubMed: 11279031] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA] (ISOFORM 1), REPRESSION BY ZNF202. |
| [4] | "Genomic sequence and structure of the human ABCG1 (ABC8) gene." Lorkowski S., Rust S., Engel T., Jung E., Tegelkamp K., Galinski E.A., Assmann G., Cullen P. Biochem. Biophys. Res. Commun. 280:121-131(2001) [PubMed: 11162488] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [GENOMIC DNA / MRNA] (ISOFORMS 2; 3; 4; 5; 6 AND 7). |
| [5] | "Characterization of the human ABCG1 gene: liver X receptor activates an internal promoter that produces a novel transcript encoding an alternative form of the protein." Kennedy M.A., Venkateswaran A., Tarr P.T., Xenarios I., Kudoh J., Shimizu N., Edwards P.A. J. Biol. Chem. 276:39438-39447(2001) [PubMed: 11500512] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 8), VARIANT LEU-668. |
| [6] | "The DNA sequence of human chromosome 21." Hattori M., Fujiyama A., Taylor T.D., Watanabe H., Yada T., Park H.-S., Toyoda A., Ishii K., Totoki Y., Choi D.-K., Groner Y., Soeda E., Ohki M., Takagi T., Sakaki Y., Taudien S., Blechschmidt K., Polley A. Yaspo M.-L.Nature 405:311-319(2000) [PubMed: 10830953] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA] (ISOFORM 1). |
| [7] | "The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC)." The MGC Project Team Genome Res. 14:2121-2127(2004) [PubMed: 15489334] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORM 4). Tissue: Brain. |
| [8] | "Isolation and characterization of a mammalian homolog of the Drosophila white gene." Croop J.M., Tiller G.E., Fletcher J.A., Lux M.L., Raab E., Goldenson D., Son D., Arciniegas S., Wu R. Gene 185:77-85(1997) [PubMed: 9034316] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [MRNA] OF 33-678. Tissue: Fetal brain. |
| [9] | "Human white/murine ABC8 mRNA levels are highly induced in lipid-loaded macrophages. A transcriptional role for specific oxysterols." Venkateswaran A., Repa J.J., Lobaccaro J.-M.A., Bronson A., Mangelsdorf D.J., Edwards P.A. J. Biol. Chem. 275:14700-14707(2000) [PubMed: 10799558] [Abstract] Cited for: INDUCTION, PROBABLE FUNCTION. |
| [10] | "ABCG1 (ABC8), the human homolog of the Drosophila white gene, is a regulator of macrophage cholesterol and phospholipid transport." Klucken J., Buechler C., Orso E., Kaminski W.E., Porsch-Oezcueruemez M., Liebisch G., Kapinsky M., Diederich W., Drobnik W., Dean M., Allikmets R., Schmitz G. Proc. Natl. Acad. Sci. U.S.A. 97:817-822(2000) [PubMed: 10639163] [Abstract] Cited for: INDUCTION, PROBABLE FUNCTION. |
| [11] | "Bacterial lipopolysaccharide induces expression of ABCA1 but not ABCG1 via an LXR-independent pathway." Kaplan R., Gan X., Menke J.G., Wright S.D., Cai T.-Q. J. Lipid Res. 43:952-959(2002) [PubMed: 12032171] [Abstract] Cited for: INDUCTION. |
| [12] | "Role of ABCG1 and other ABCG family members in lipid metabolism." Schmitz G., Langmann T., Heimerl S. J. Lipid Res. 42:1513-1520(2001) [PubMed: 11590207] [Abstract] Cited for: REVIEW. |
| [13] | "Expression of the ATP-binding cassette transporter gene ABCG1 (ABC8) in Tangier disease." Lorkowski S., Kratz M., Wenner C., Schmidt R., Weitkamp B., Fobker M., Reinhardt J., Rauterberg J., Galinski E.A., Cullen P. Biochem. Biophys. Res. Commun. 283:821-830(2001) [PubMed: 11350058] [Abstract] Cited for: TISSUE SPECIFICITY. |
| + | Additional computationally mapped references. |
Cross-references
Sequence databases | |
|---|---|
| EMBL GenBank DDBJ | X91249 mRNA. Translation: CAA62631.1. Different initiation. AB038161 Genomic DNA. Translation: BAB13728.2. Different initiation. AJ289137 AJ289151 Genomic DNA. Translation: CAC00730.1. Different initiation.AF323658 AF323657 Genomic DNA. Translation: AAK28836.1.AF323664 mRNA. Translation: AAK28842.1. AF323658 AF323657 Genomic DNA. Translation: AAK28833.1.AF323660 mRNA. Translation: AAK28838.1. AF323663 mRNA. Translation: AAK28841.1. Different initiation. AF323658 AF323657 Genomic DNA. Translation: AAK28835.1.AF323662 mRNA. Translation: AAK28840.1. AF323658 AF323657 Genomic DNA. Translation: AAK28837.1.AF323658 AF323657 Genomic DNA. Translation: AAK28834.1.AF323661 mRNA. Translation: AAK28839.1. AY048757 mRNA. Translation: AAL06598.1. AP001746 Genomic DNA. Translation: BAA95530.1. Different initiation. BC029158 mRNA. Translation: AAH29158.2. U34919 mRNA. Translation: AAC51098.1. Different initiation. |
| IPI | IPI00024089. IPI00220758. IPI00220759. IPI00220760. IPI00220762. IPI00333761. IPI00335646. IPI00414196. |
| RefSeq | NP_004906.3. NM_004915.3. NP_058198.2. NM_016818.2. NP_997057.1. NM_207174.1. NP_997510.1. NM_207627.1. NP_997511.1. NM_207628.1. NP_997512.1. NM_207629.1. |
| UniGene | Hs.124649. |
3D structure databases | |
| ProteinModelPortal | P45844. |
| SMR | P45844. Positions 76-328. |
| ModBase | Search... |
Protein-protein interaction databases | |
| STRING | P45844. |
Polymorphism databases | |
| DMDM | 17433715. |
Proteomic databases | |
| PRIDE | P45844. |
Protocols and materials databases | |
| StructuralBiologyKnowledgebase | Search... |
Genome annotation databases | |
| Ensembl | ENST00000361802; ENSP00000354995; ENSG00000160179. |
| GeneID | 9619. |
| KEGG | hsa:9619. |
| UCSC | uc002zam.1. human. uc002zao.1. human. uc002zaq.1. human. uc002zar.1. human. |
Organism-specific databases | |
| CTD | 9619. |
| GeneCards | GC21P043619. |
| HGNC | HGNC:73. ABCG1. |
| HPA | HPA031470. HPA031471. |
| MIM | 603076. gene. |
| neXtProt | NX_P45844. |
| PharmGKB | PA24408. |
| GenAtlas | Search... |
Phylogenomic databases | |
| GeneTree | ENSGT00600000084271. |
| HOVERGEN | HBG103052. |
| OMA | AAMTEPK. |
| PhylomeDB | P45844. |
Enzyme and pathway databases | |
| Reactome | REACT_15518. Transmembrane transport of small molecules. REACT_22258. Metabolism of lipids and lipoproteins. |
Gene expression databases | |
| ArrayExpress | P45844. |
| Bgee | P45844. |
| Genevestigator | P45844. |
| GermOnline | ENSG00000160179. Homo sapiens. |
Family and domain databases | |
| InterPro | IPR013525. ABC_2_trans. IPR003439. ABC_transporter-like. IPR017871. ABC_transporter_CS. IPR020064. ABC_transptr_G1-like. IPR003593. ATPase_AAA+_core. IPR005284. Pigment_permease. [Graphical view] |
| KO | K05679. |
| PANTHER | PTHR19241:SF21. ABC_transptr_G1-like. 1 hit. |
| Pfam | PF01061. ABC2_membrane. 1 hit. PF00005. ABC_tran. 1 hit. [Graphical view] |
| SMART | SM00382. AAA. 1 hit. [Graphical view] |
| TIGRFAMs | TIGR00955. 3a01204. 1 hit. |
| PROSITE | PS51012. ABC_TM2. False negative. PS00211. ABC_TRANSPORTER_1. 1 hit. PS50893. ABC_TRANSPORTER_2. 1 hit. [Graphical view] |
| ProtoNet | Search... |
Other | |
| DrugBank | DB00171. Adenosine triphosphate. |
| NextBio | 36087. |
| SOURCE | Search... |
Entry information
| Entry name | ABCG1_HUMAN | ||||||||
| Accession | Primary (citable) accession number: P45844 Secondary accession number(s): Q86SU8 Q9BXL4 | ||||||||
| Entry history |
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| Entry status | Reviewed (UniProtKB/Swiss-Prot) | ||||||||
| Annotation program | Chordata Protein Annotation Program | ||||||||
| Disclaimer | Any medical or genetic information present in this entry is provided for research, educational and informational purposes only. It is not in any way intended to be used as a substitute for professional medical advice, diagnosis, treatment or care. | ||||||||
Relevant documents
| Human chromosome 21 Human chromosome 21: entries, gene names and cross-references to MIM |
| Human entries with polymorphisms or disease mutations List of human entries with polymorphisms or disease mutations |
| Human polymorphisms and disease mutations Index of human polymorphisms and disease mutations |
| MIM cross-references Online Mendelian Inheritance in Man (MIM) cross-references in UniProtKB/Swiss-Prot |
| SIMILARITY comments Index of protein domains and families |

Clusters with