Protein: ABCA3_RAT
Sequence: MVVLRQLRLLLWKNYTLKKRKVLVTVLELFLPLLFSGILIWLRLKIQSENVPNATVYPDQHIQELPLFFSFPPPGGSWELAYVPSHSDAARTITEAVRREFMIKMRVHGFSSEKDFEDYVRYDNHSSNVLAAVVFEHTFNHSKDPLPLAVRYHLRFSYTRRNYMWTQTGNLFLKETEGWHTASLFPLFPSPGPREPSSPDGGEPGYIREGFLAVQHAVDKAIMHYHANASAHQLFQKLTVITKRFPFPPYISDPFLIAIQYQLPLLLMLSFTYTSLTIIRAVVQEKEKKLKEYMRMMGLSSWLHWSAWFLMFLLFSLIVVSFMTLLFCVKVKKDIAVLSNSDPSLVLAFLLCFAISSISFSFMVSTFFSKANMAATVGGFLYFFTYTPYFFVAPRYNWMTLSQKLLSCLLSNVAMAMGAQLIGKFEAKGTGIQWCDLLNPVNVDDDFCFGQVLGMLLLDSVLYGLVTWYVEAVFPGQFGVPQPWYFFLMPSYWCGNPRTVVGKEEEGGDPEKAFRTEYFEAEPEDLAAGIKIKHLSKVFQVGNKDKMGIRDLTLNLYEGQITVLLGHNGAGKTTTMSMLTGLFPPTSGHAYIRGYEISQDMVQIRKSLGLCPQHDVLFDNLTVAEHLYFYAQLKGLSVQKCPEEVKQMLHTLGLEDKRDSRSKFLSGGMKRKLAIGIALIAGSKVLMLDEPTSGMDAVSRRAIWDLLQQQKSDRTVLLTTHFMDEADLLGDRIAILAKGELQCCGSSLFLKQKYGAGYHMTLVKEPHCNPEGISQLVHHHVPNAMLESHAGAELSFILPKESTHRFESLFAKLEKKQKELGIASFGASVTTMEEVFLRVGKLVDTSMDIQAIQLPALQYQHERRASDWALDSNLCGVMDPTNGIGALIEEEEVLVKLNTGLALHCQQFWAMFLKKAAYSWREWRMVAAQILVPVTCLTLALLAINYTSEIFDDPPLKLSLNEYGTTVVPFSVPGTSRLGQQLSEHLRDMLQAERQEPREVLGDLEEFLVFRASVEGGGFNERCLVATSFKDSGERTVVTALFNNQAYHSPATALAIVDNLLFKLLCGPRASIEISNYPQPRSTLQVAKDQFNEGRKGFDIALNLLIAMAFLASTFSILAVSERAVQAKHVQFVSGVHVATFWLSALLWDLISFLVPSLLLLVVFRAFDVHAFTRDGHMADLLLLLMLYGWAIIPLMYLLSFFFSAASTAYTRLTIFNILSGIATFIVVTIMRIPAVKLEELSRTLDHVFLVLPNHCLGMAVSNFYENYETRRYCTSSEVATHYCKKYNIQYQENFYAWSTPGIGKFVTSMAASGGIYLTLLFLIETNLLWRLRTFVCAFRRRWTLAELQNRTSVLPEDQDVADERSRVLVPSLDSMLDTPLIINELSKVYDQRAPLLAVDRISLAVQKGECFGLLGFNGAGKTTTFKMLTGEETITSGDAFVGGYSISSDIGKVRQRMGYCPQFDALLDHMTGREMLVMYARLRGIPERLIDACVENTLRGLLLEPHANKLVKTYSGGNKRKLSTGIALIGEPAVIFLDEPSTGMDPVARRLLWDTVARARESGKAIVITSHSMEECEALCTRLAIMVQGQFKCLGSPQHLKSKFGSGYSLQAKVRSEGKQEVLEEFKAFVDLTFPGSVLEDEHQDMVHYHLPGCDLSWAKVFGILEKAKEKYGVDDYSVSQISLEQVFLSFAHLQPPTTEDGR
What is the function of this protein?
Catalyzes the ATP-dependent transport of phospholipids such as phosphatidylcholine and phosphoglycerol from the cytoplasm into the lumen side of lamellar bodies, in turn participates in the lamellar bodies biogenesis and homeostasis of pulmonary surfactant.  Transports preferentially phosphatidylcholine containing short acyl chains.  In addition plays a role as an efflux transporter of miltefosine across macrophage membranes and free cholesterol (FC) through intralumenal vesicles by removing FC from the cell as a component of surfactant and protects cells from free cholesterol toxicity.
What are the official names of this protein?
Phospholipid-transporting ATPase ABCA3, ATP-binding cassette sub-family A member 3, Xenobiotic-transporting ATPase ABCA3.
What are the subcellular locations of this protein?
Endosome, multivesicular body membrane; Multi-pass membrane protein. Cytoplasmic vesicle membrane. Late endosome membrane. Lysosome membrane. Note=Localized in the limiting membrane of lamellar bodies in lung alveolar type II cells. Trafficks via the Golgi, sorting vesicles (SVs) and late endosome/multivesicular body network directly to the outer membrane of lamellar bodies in AT2 lung epithelial cells or to lysosomes and lysosomal-related organelles (LROs) in other cells where undergoes proteolytic cleveage and oligosaccharide processing from high mannose type to complex type. Oligomers formation takes place in a post-endoplasmic reticulum compartment.