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ATP-Binding Cassette, Sub-Family B, Member 1
Definition 1
Human p-glycoprotein-1 (1280 aa, 141 kDa) is encoded by the human ATP-binding cassette, sub-family B (MDR/TAP), member 1 (ABCB1) gene. The protein is an ATP-dependent, transmembrane transport/efflux pump glycoprotein that is expressed in liver, kidney, small intestine and brain. (NCI Thesaurus)
Definition 2
A protein that pumps substances out of cells. Cancer cells that have too much p-glycoprotein may not be killed by anticancer drugs. (NCI Dictionary)
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