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Official Full Name
ATP-binding cassette, sub-family B (MDR/TAP), member 4
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 intra-cellular membranes.ABC genes are divided into seven distinct subfamilies (ABC1, MDR/TAP, MRP, ALD, OABP, GCN20, White).This protein is a member of the MDR/TAP subfamily.Members of the MDR/TAP subfamily are involved in multidrug resistance as well as antigen presentation.This gene encodes a full transporter and member of the p-glycoprotein family of membrane proteins with phosphatidylcholine as its substrate.The function of this protein has not yet been determined; however, it may involve transport of phospholipids from liver hepatocytes into bile.Alternative splicing of this gene results in several products of undetermined function.
ABCB4; ATP-binding cassette, sub-family B (MDR/TAP), member 4; MDR3, PGY3; multidrug resistance protein 3; GBD1; MDR2; PFIC 3; P-glycoprotein 3; multiple drug resistance 3; ATP-binding cassette sub-family B member 4; P glycoprotein 3/multiple drug resistance 3; P-glycoprotein-3/multiple drug resistance-3; MDR3; PGY3; ABC21; MDR2/3; PFIC-3; zgc:172149; abcb1b; ABC efflux transporter 4

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