Title : Stereoselective transport of amethopterin enantiomers by the proton-coupled folate transporter.

Pub. Date : 2010

PMID : 20610887






6 Functional Relationships(s)
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1 Stereoselective transport of methotrexate (L-amethopterin, L-MTX) and its antipode (D-amethopterin, D-MTX) by the proton-coupled folate transporter (PCFT) was examined using PCFT-expressing HEK293 cells (PCFT-HEK293 cells). lometrexol solute carrier family 46 member 1 Homo sapiens
2 Stereoselective transport of methotrexate (L-amethopterin, L-MTX) and its antipode (D-amethopterin, D-MTX) by the proton-coupled folate transporter (PCFT) was examined using PCFT-expressing HEK293 cells (PCFT-HEK293 cells). lometrexol solute carrier family 46 member 1 Homo sapiens
3 Stereoselective transport of methotrexate (L-amethopterin, L-MTX) and its antipode (D-amethopterin, D-MTX) by the proton-coupled folate transporter (PCFT) was examined using PCFT-expressing HEK293 cells (PCFT-HEK293 cells). lometrexol solute carrier family 46 member 1 Homo sapiens
4 Stereoselective transport of methotrexate (L-amethopterin, L-MTX) and its antipode (D-amethopterin, D-MTX) by the proton-coupled folate transporter (PCFT) was examined using PCFT-expressing HEK293 cells (PCFT-HEK293 cells). lometrexol solute carrier family 46 member 1 Homo sapiens
5 The initial uptake rate of L-MTX into PCFT-HEK293 cells followed Michaelis-Menten kinetics with a K(m) value of approximately 5.0 microM. lometrexol solute carrier family 46 member 1 Homo sapiens
6 The present study revealed that the transport of MTX enantiomers by PCFT is highly stereoselective with the uptake clearance of L-MTX being approximately 40-fold greater than that of D-MTX. lometrexol solute carrier family 46 member 1 Homo sapiens