The MRP family of drug efflux pumps

Oncogene. 2003 Oct 20;22(47):7537-52. doi: 10.1038/sj.onc.1206953.


The MRP family is comprised of nine related ABC transporters that are able to transport structurally diverse lipophilic anions and function as drug efflux pumps. Investigations of this family have provided insights not only into cellular resistance mechanisms associated with natural product chemotherapeutic agents, antifolates and nucleotide analogs, but also into factors that influence drug distribution in the body, membrane systems that are involved in the extrusion of reduced folates, cysteinyl leukotrienes and bile acids, and the molecular basis of two hereditary conditions in humans. The review will describe the biochemical properties, drug resistance activities and potential in vivo functions of these unusual pumps.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, P.H.S.
  • Review

MeSH terms

  • Animals
  • Biological Transport
  • Drug Resistance, Neoplasm*
  • Humans
  • Multidrug Resistance-Associated Proteins / chemistry
  • Multidrug Resistance-Associated Proteins / metabolism*
  • Protein Structure, Tertiary


  • Multidrug Resistance-Associated Proteins