Protein: ATP-binding cassette sub-family A member 7 (Q7TNJ2)
Organism: Rattus norvegicus (Rat)
Function: ATP-binding cassette (ABC) transporter that plays a role in lipid homeostasis and macrophage-mediated phagocytosis (By similarity). Binds APOA1 and may function in apolipoprotein-mediated phospholipid efflux from cells (By similarity). May also mediate cholesterol efflux (By similarity). May regulate cellular ceramide homeostasis during keratinocyte differentiation (By similarity). Involved in lipid raft organization and CD1D localization on thymocytes and antigen-presenting cells, which plays an important role in natural killer T-cell development and activation (By similarity). Plays a role in phagocytosis of apoptotic cells by macrophages (By similarity). Macrophage phagocytosis is stimulated by APOA1 or APOA2, probably by stabilization of ABCA7 (By similarity). Also involved in phagocytic clearance of amyloid-beta by microglia cells and macrophages (By similarity). Further limits amyloid-beta production by playing a role in the regulation of amyloid-beta A4 precursor protein (APP) endocytosis and/or processing (By similarity).
Subcellular location: Cell membrane {ECO:0000269|PubMed:12727224}; Multi-pass membrane protein {ECO:0000255}. Golgi apparatus membrane {ECO:0000269|PubMed:12727224}; Multi-pass membrane protein {ECO:0000255}. Early endosome membrane {ECO:0000250|UniProtKB:Q91V24}; Multi-pass membrane protein {ECO:0000255}. Cell projection, ruffle membrane {ECO:0000250|UniProtKB:Q91V24}. Cell projection, phagocytic cup {ECO:0000250|UniProtKB:Q91V24}. Cytoplasm {ECO:0000250|UniProtKB:Q91V24}. Note=Localizes to cell membrane ruffles and phagocytic cups of macrophages stimulated with C1q or apoptotic cells. Localizes to the cytoplasm of resting macrophages, probably in Golgi and endosomes. Localizes to the apical brush border of cells in the proximal tubules of kidney. {ECO:0000250|UniProtKB:Q91V24}.
Interaction partners:
- Apolipoprotein A-I
- Phosphatidylinositol-binding clathrin assembly protein
- Clusterin
- CD2-associated protein
- Myc box-dependent-interacting protein 1
- CD33 molecule
- Ephrin type-A receptor 1
- Membrane spanning 4-domains A6A
- Triggering receptor expressed on myeloid cells 2
- Membrane spanning 4-domains A4A
Sequence:
MAFCTQLMLLLWKNYTYRRRQPIQLVVELLWPLFLFFILVAVRHSHPPLEHHECHFPNKPLPSAGTVPWLQGLVCNVNNSCFQHPTPGEKPGVLSNFKDSLISRLLADAHTVLGGHSTQDMLAALGKLIPVLRAVGSGAWPQESNQPAKQGSVTELLEKILQRASLETVLGQAQDSMRKFSDATRTVAQELLTLPSLVELRALLRRPRGSAGSLELISEALCSTKGPSSPGGLSLNWYEANQINEFMGPELAPTLPDSSLSPACSEFVGALDDHPVSRLLWRRLKPLILGKILFAPDTNFTRKLMAQVNQTFEELALLRDLHELWGVLGPQIFNFMNDSTNVAMLQKLLDVEGTGWQQQTPKGQKQLEAIRDFLDPSRGRYNWQEAHADMGRLAEILGQILECVSLDKLEAVPSEEALVSRALELLGERRLWAGIVFLSPEHPLDSSEPPSPTTTGPGHLRVKIRMDIDDVTRTNKIRDKFWDPGPSADPLMDLRYVWGGFVYLQDLLEQAAVRVLSGRDSRAGLYLQQMPHPCYVDDVFLRVLSRSLPLFLTLAWIYSVALTVKAVVREKETRLRETMRAMGLSRAVLWLGWFLSCLGPFLVSAALLVLVLKLGNILPYSHPVVVFLFLAAFAVATVAQSFLLSAFFSRANLAAACGGLAYFALYLPYVLCVAWRERLPLGGLLAVSLLSPVAFGFGCESLALLEEQGDGAQWHNLGTGPAEDVFSLAQVSAFLLLDAVIYGLALWYLEAVCPGQYGIPEPWNFPFRRSYWCGPGPPKSSVLAPAPQDPKVLVEEPPPGLVPGVSIRGLKKHFRGSPQPALRGLNLDFYEGHITAFLGHNGAGKTTTLSILSGLFPPSSGSASILGHDVQTNMAAIRPHLGICPQYNVLFDMLTVEEHVWFYGRLKGVSAAAIDSEQEHLIRDVGLIPKRDTQTRHLSGGMQRKLSVAIAFVGGSRVVIMDEPTAGVDPASRRGIWELLLKYREGRTLILSTHHLDEAELLGDRVAMVASGSLCCCGSPLFLRRHLGCGYYLTLVKSSQSLVTHDLKGDTEDPRREKKSGSEGKTADTVLTRDGPHRSSQVPAPDAVPVTPSAALILELVQRHVPGAQLVEELPHELVLALPYAGALDGSFATVFQELDQQLERLGLTGYGISDTNLEEIFLKVVEEAHAHGEGGDPRQQQHLLTATPQPHTGPEASVLENGELAKLVLDPQAPKGSAPTTAQVQGWTLTCQQLRALLHKRFLLARRSRRGLFAQIVLPALFVGLALFFTLIVPPFGQYPPLQLSPAMYGPQVSFFSEDAPADPNRMKLLEALLGEAGLQDPSVQGKGSRGSECTHSLACYFTVPEVPPDVASILASGNWTPDSPSPACQCSQPGARRLLPDCPAGAGGPPPPQAMAGFGEVVQNLTGRNVSDFLVKTYPSLVRRGLKTKKWVDEVRYGGFSLGGRDPDLPSGREVVRTVAEMRALLSPQPGNTLDRILNNLTQWALGLDARNSLKIWFNNKGWHAMVAFVNRANNGLLRAFLPSGSVRHAHSITTLNHPLNLTKEQLSEATLIASSVDVLVSICVVFAMSFVPASFTLVLIEERITRAKHLQLVSGLPQTLYWLGNFLWDMCNYLVAVCIVVLIFLAFQQKAYVAPENLPALLLLLLLYGWSITPLMYPASFFFSVPSTAYVVLTCINLFIGINSSMATFVLELLSDQNLQEVSRILKQVFLIFPHFCLGRGLIDMVRNQAMADAFERLGDKQFQSPLRWDIIGKNLLAMVAQGPLFLLITLLLQHRNRLLPQPKSRLPPPLGEEDEDVVRERERVTKGATQGDVLVLRDLTKVYRGQRSPAVDHLCLGIPPGECFGLLGVNGAGKTSTFRMVTGDTLPSSGEAVLAGHNVAQEPSAAHRSMGYCPQSDAIFDLLTGREHLELFARLRGVPEAQVAQTALSGLVRLGLPSYADRPAGTYSGGNKRKLATALALVGDPAVVFLDEPTTGMDPSARRFLWNNLLSVVREGRSVVLTSHSMEECEALCTRLAIMVNGRFRCLGSAQHLKSRFGAGHTLTLRVPPDQPEPAIAFIVTTFPDAELREVHGSRLRFQLPPGGGCTLARVFRELAAQGKAHGVEDFSVSQTTLEEVFLYFSKDQGEEEEGSGQETETREVSTPGLQHPKRVSRFLEDPSSVETVI