Systematic nomenclature	Common abbreviation	HGNC, UniProt	Comment
ABCB1	MDR1, PGP1	ABCB1, P08183	Responsible for the cellular export of many therapeutic drugs. The mouse and rat have two Mdr1 genes (gene names; Mdr1a and Mdr1b) while the human has only the one gene, MDR1
ABCB2	TAP1	TAP1, Q03518	Endoplasmic reticulum peptide transporter, possibly requires heterodimerization with TAP2
ABCB3	TAP2	TAP2, Q03519	Endoplasmic reticulum peptide transporter, possibly requires heterodimerization with TAP1
ABCB4	PGY3	ABCB4, P21439	Transports phosphatidylcholine from intracellular to extracellular face of the hepatocyte canalicular membrane 13
ABCB5	–	ABCB5, Q2M3G0	Multidrug resistance protein in, and marker of, melanoma cells 17
ABCB6	MTABC3	ABCB6, Q9NP58	Putative mitochondrial porphyrin transporter 11; other subcellular localizations are possible, such as the plasma membrane, as a specific determinant of the Langereis blood group system 5
ABCB7	ABC7	ABCB7, O75027	Mitochondrial; reportedly essential for haematopoiesis 15
ABCB8	MABC1	ABCB8, Q9NUT2	Mitochondrial; suggested to play a role in chemoresistance of melanoma 4
ABCB9	TAPL	ABCB9, Q9NP78	Reported to be lysosomal 7
ABCB10	MTABC2	ABCB10, Q9NRK6	Mitochondrial location; the first human ABC transporter to have a crystal structure reported 18
ABCB11	ABC16	ABCB11, O95342	Loss-of-function mutations are associated with progressive familial intrahepatic cholestasis type 2 19