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ABCA4 (ATP binding cassette subfamily A member 4)

Gene
Entrez ID Entrez Gene ID - the GENE ID in NCBI Gene database.
24
Gene nameGene Name - the full gene name approved by the HGNC.
ATP binding cassette subfamily A member 4
Gene symbolGene Symbol - the official gene symbol approved by the HGNC, which is a short abbreviated form of the gene name.
ABCA4
SynonymsGene synonyms aliases
ABC10, ABCR, ARMD2, CORD3, FFM, RMP, RP19, STGD, STGD1
ChromosomeChromosome number
1
Chromosome locationChromosomal Location - indicates the cytogenetic location of the gene or region on the chromosome.
1p22.1
SummarySummary of gene provided in NCBI Entrez Gene.
The membrane-associated protein encoded by this gene is a member of the superfamily of ATP-binding cassette (ABC) transporters. ABC proteins transport various molecules across extra- and intracellular membranes. ABC genes are divided into seven distinct subfamilies (ABC1, MDR/TAP, MRP, ALD, OABP, GCN20, White). This protein is a member of the ABC1 subfamily. Members of the ABC1 subfamily comprise the only major ABC subfamily found exclusively in multicellular eukaryotes. This protein is a retina-specific ABC transporter with N-retinylidene-PE as a substrate. It is expressed exclusively in retina photoreceptor cells, and the gene product mediates transport of an essental molecule, all-trans-retinal aldehyde (atRAL), across the photoreceptor cell membrane. Mutations in this gene are found in patients diagnosed with Stargardt disease, a form of juvenile-onset macular degeneration. Mutations in this gene are also associated with retinitis pigmentosa-19, cone-rod dystrophy type 3, early-onset severe retinal dystrophy, fundus flavimaculatus, and macular degeneration age-related 2. [provided by RefSeq, Sep 2019]
SNPsSNP information provided by dbSNP.
SNP ID Visualize variation Clinical significance Consequence
rs1047376 A>G,T Likely-pathogenic Coding sequence variant, missense variant
rs1762111 A>G Likely-pathogenic, uncertain-significance, pathogenic Coding sequence variant, missense variant
rs1800548 C>T Likely-pathogenic, uncertain-significance Coding sequence variant, missense variant
rs1800552 C>T Likely-pathogenic, conflicting-interpretations-of-pathogenicity, uncertain-significance, pathogenic Coding sequence variant, missense variant
rs1800553 C>T Pathogenic-likely-pathogenic, likely-pathogenic, risk-factor, pathogenic Coding sequence variant, missense variant
miRNAmiRNA information provided by mirtarbase database.
miRTarBase ID miRNA Experiments Reference
MIRT017969 hsa-miR-335-5p Microarray 18185580
Gene ontology (GO)Gene ontology information of associated ontologies with gene provided by GO database.
GO ID Ontology Definition Evidence Reference
GO:0001523 Process Retinoid metabolic process TAS
GO:0005215 Function Transporter activity TAS 9054934
GO:0005319 Function Lipid transporter activity IBA 21873635
GO:0005524 Function ATP binding IEA
GO:0005548 Function Phospholipid transporter activity IBA 21873635
Other IDsOther ids provides unique ids of gene in databases such as OMIM, HGNC, ENSEMBLE.
MIM
HGNC
e!Ensembl
Protein
UniProt ID P78363
Protein name Retinal-specific phospholipid-transporting ATPase ABCA4 (EC 7.6.2.1) (ATP-binding cassette sub-family A member 4) (RIM ABC transporter) (RIM protein) (RmP) (Retinal-specific ATP-binding cassette transporter) (Stargardt disease protein)
Protein function Catalyzes the translocation of specific phospholipids from the extracellular/lumenal to the cytoplasmic leaflet of membrane coupled to the hydrolysis of ATP (PubMed:24097981). Transports preferentially phosphatidylethanolamine (PubMed:24097981). In the visual cycle, acts as an inward-directed retinoid flipase, retinoid substrates imported by ABCA4 from the extracellular or intradiscal (rod) membrane surfaces to the cytoplasmic membrane surface are all-trans-retinaldehyde (ATR) and N-retinyl-phosphatidyl-ethanolamine (NR-PE). Once transported to the cytoplasmic surface, ATR is reduced to vitamin A by trans-retinol dehydrogenase (tRDH) and then transferred to the retinal pigment epithelium (RPE) where it is converted to 11-cis-retinal. May play a role in photoresponse, removing ATR/NR-PE from the extracellular photoreceptor surfaces during bleach recovery.
PDB 7LKP , 7LKZ
Family and domains

Pfam

Accession ID Position in sequence Description Type
PF12698 ABC2_membrane_3
607 856
Family
PF00005 ABC_tran
946 1090
ABC transporter
Domain
PF12698 ABC2_membrane_3
1595 1895
Family
PF00005 ABC_tran
1955 2099
ABC transporter
Domain
Sequence
MGFVRQIQLLLWKNWTLRKRQKIRFVVELVWPLSLFLVLIWLRNANPLYSHHECHFPNKA
MPSAGMLPWLQGIFCNVNNPCFQSPTPGESPGIVSNYNNSILARVYRDFQELLMNAPESQ
HLGRIWTELHILSQFMDTLRTHPERIAGRGIRIRDILKDEETLTLFLIKNIGLSDSVVYL
LINSQVRPEQFAHGVPDLALKDIACSEALLERFIIFSQRRGAKTVRYALCSLSQGTLQWI
EDTLYANVDFFKLFRVLPTLLDSRSQGINLRSWGGILSDMSPRIQEFIHRPSMQDLLWVT
RPLMQNGGPETFTKLMGILSDLLCGYPEGGGSRVLSFNWYEDNNYKAFLGIDSTRKDPIY
SYDRRTTSFCNALIQSLESNPLTKIAWRAAKPLLMGKILYTPDSPAARRILKNANSTFEE
LEHVRKLVKAWEEVGPQIWYFFDNSTQMNMIRDTLGNPTVKDFLNRQLGEEGITAEAILN
FLYKGPRESQADDMANFDWRDIFNITDRTLRLVNQYLECLVLDKFESYNDETQLTQRALS
LLEENMFWAGVVFPDMYPWTSSLPPHVKYKIRMDIDVVEKTNKIKDRYWDSGPRADPVED
FRYIWGGFAYLQDMVEQGITRSQVQAEAPVGIYLQQMPYPCFVDDSFMIILNRCFPIFMV
LAWIYSVSMTVKSIVLEKELRLKETLKNQGVSNAVIWCTWFLDSFSIMSMSIFLLTIFIM
HGRILHYSDPFILFLFLLAFSTATIMLCFLLSTFFSKASLAAACSGVIYFTLYLPHILCF
AWQDRMTAELKKAVSLLSPVAFGFGTEYLVRFEEQGLGLQWSNIGNSPTEGDEFSFLLSM
QMMLLDAAVYGLLAWY
LDQVFPGDYGTPLPWYFLLQESYWLGGEGCSTREERALEKTEPL
TEETEDPEHPEGIHDSFFEREHPGWVPGVCVKNLVKIFEPCGRPAVDRLNITFYENQITA
FLGHNGAGKTTTLSILTGLLPPTSGTVLVGGRDIETSLDAVRQSLGMCPQHNILFHHLTV
AEHMLFYAQLKGKSQEEAQLEMEAMLEDTGLHHKRNEEAQDLSGGMQRKLSVAIAFVGDA
KVVILDEPTS
GVDPYSRRSIWDLLLKYRSGRTIIMSTHHMDEADLLGDRIAIIAQGRLYC
SGTPLFLKNCFGTGLYLTLVRKMKNIQSQRKGSEGTCSCSSKGFSTTCPAHVDDLTPEQV
LDGDVNELMDVVLHHVPEAKLVECIGQELIFLLPNKNFKHRAYASLFRELEETLADLGLS
SFGISDTPLEEIFLKVTEDSDSGPLFAGGAQQKRENVNPRHPCLGPREKAGQTPQDSNVC
SPGAPAAHPEGQPPPEPECPGPQLNTGTQLVLQHVQALLVKRFQHTIRSHKDFLAQIVLP
ATFVFLALMLSIVIPPFGEYPALTLHPWIYGQQYTFFSMDEPGSEQFTVLADVLLNKPGF
GNRCLKEGWLPEYPCGNSTPWKTPSVSPNITQLFQKQKWTQVNPSPSCRCSTREKLTMLP
ECPEGAGGLPPPQRTQRSTEILQDLTDRNISDFLVKTYPALIRSSLKSKFWVNEQRYGGI
SIGGKLPVVPITGEALVGFLSDLGRIMNVSGGPITREASKEIPDFLKHLETEDNIKVWFN
NKGWHALVSFLNVAHNAILRASLPKDRSPEEYGITVISQPLNLTKEQLSEITVLTTSVDA
VVAICVIFSMSFVPASFVLYLIQERVNKSKHLQFISGVSPTTYWVTNFLWDIMNYSVSAG
LVVGIFIGFQKKAYTSPENLPALVALLLLYGWAVIPMMYPASFLFDVPSTAYVALSCANL
FIGINSSAITFILELFENNRTLLRFNAVLRKLLIVFPHFCLGRGLIDLALSQAVTDVYAR
FGEEHSANPFHWDLIGKNLFAMVVEGVVYFLLTLL
VQRHFFLSQWIAEPTKEPIVDEDDD
VAEERQRIITGGNKTDILRLHELTKIYPGTSSPAVDRLCVGVRPGECFGLLGVNGAGKTT
TFKMLTGDTTVTSGDATVAGKSILTNISEVHQNMGYCPQFDAIDELLTGREHLYLYARLR
GVPAEEIEKVANWSIKSLGLTVYADCLAGTYSGGNKRKLSTAIALIGCPPLVLLDEPTT
G
MDPQARRMLWNVIVSIIREGRAVVLTSHSMEECEALCTRLAIMVKGAFRCMGTIQHLKSK
FGDGYIVTMKIKSPKDDLLPDLNPVEQFFQGNFPGSVQRERHYNMLQFQVSSSSLARIFQ
LLLSHKDSLLIEEYSVTQTTLDQVFVNFAKQQTESHDLPLHPRAAGASRQAQD
Sequence length 2273
Interactions View interactions

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