Reference: Schreve J and Garrett JM (1997) The branched-chain amino acid permease gene of Saccharomyces cerevisiae, BAP2, encodes the high-affinity leucine permease (S1). Yeast 13(5):435-9

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Abstract


The amino acid leucine has been shown previously to be transported into a yeast cell by at least three permeases: the general amino acid permease, a high-affinity permease (S1) and a low-affinity permease (S2). We isolated the gene BAP2 as a multicopy suppressor of the YPD- phenotype of aat1leu2 yeast. BAP2 has been identified previously as encoding an amino acid permease which transports branched-chain amino acids. In order to align the genetic and biochemical studies of leucine uptake we completed a detailed kinetic analysis of yeast strains in which the BAP2 gene was disrupted and compared this to the kinetics of uptake of the parental strain. We demonstrate that BAP2 encodes the high-affinity leucine permease previously called S1.

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Journal Article | Research Support, U.S. Gov't, Non-P.H.S. | Research Support, U.S. Gov't, P.H.S.
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Schreve J, Garrett JM
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