PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 10363967-2 1999 Evidence for MRP-mediated antifolate efflux relies upon the following findings: (a) a 2-3.3-fold lower accumulation of [3H]MTX and subsequent reduced formation of long-chain polyglutamate forms of MTX; (b) reversal of MTX resistance by probenecid in both transfectants, and (c) ATP-dependent uptake of [3H]MTX in inside-out vesicles of MRP1 and MRP2 transfectants. Tritium 120-122 ATP binding cassette subfamily C member 2 Homo sapiens 345-349 11500505-6 2001 We found that only nonconservative substitutions (Ala and Cys) of Trp1254 eliminated [3H]E217betaG transport by MRP2, whereas more conservative substitutions (Phe and Tyr) had no effect. Tritium 86-88 ATP binding cassette subfamily C member 2 Homo sapiens 112-116 11500505-9 2001 Finally, we found that sulfinpyrazone stimulated [3H]E217betaG transport by wild-type MRP2 4-fold, whereas transport by the Trp1254 substituted mutants was enhanced 6-10-fold. Tritium 50-52 ATP binding cassette subfamily C member 2 Homo sapiens 86-90