ABCC2（ATP binding cassette subfamily C member 2），癌症关联基因，基因ID：1244，该基因编码的蛋白质是atp结合盒（abc）转运蛋白超家族的成员。abc蛋白通过细胞外和细胞内的膜运输各种分子。abc基因分为七个不同的亚家族（abc1，mdr/tap，mrp，ald，oabp，gcn20，white）。该蛋白是mrp亚家族的一员，参与多药耐药。这种蛋白在肝细胞的小管（顶端）部分表达，在胆汁转运中发挥作用。底物包括长春碱等抗癌药物；因此，这种蛋白质似乎有助于哺乳动物细胞的耐药性。dubin-johnson综合征（djs）是一种以高胆红素血症为特征的常染色体隐性遗传疾病。[由RefSeq提供，2008年7月]The 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 MRP subfamily which is involved in multi-drug resistance. This protein is expressed in the canalicular (apical) part of the hepatocyte and functions in biliary transport. Substrates include anticancer drugs such as vinblastine; therefore， this protein appears to contribute to drug resistance 。