PMID:16098526

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Citation

Kutukova, EA, Livshits, VA, Altman, IP, Ptitsyn, LR, Zyiatdinov, MH, Tokmakova, IL and Zakataeva, NP (2005) The yeaS (leuE) gene of Escherichia coli encodes an exporter of leucine, and the Lrp protein regulates its expression. FEBS Lett. 579:4629-34

Abstract

Overexpression of the yeaS gene encoding a protein belonging to the RhtB transporter family conferred upon cells resistance to glycyl-l-leucine, leucine analogues, several amino acids and their analogues. yeaS overexpression promoted leucine and, to a lesser extent, methionine and histidine accumulation by the respective producing strains. Our results indicate that yeaS encodes an exporter of leucine and some other structurally unrelated amino acids. The expression of yeaS (renamed leuE for "leucine export") was induced by leucine, l-alpha-amino-n-butyric acid and, to a lesser extent, by several other amino acids. The global regulator Lrp mediated this induction.

Links

PubMed Online version:10.1016/j.febslet.2005.07.031

Keywords

Amino Acid Transport Systems, Neutral/genetics; Amino Acid Transport Systems, Neutral/metabolism; Base Sequence; DNA-Binding Proteins; Escherichia coli/genetics; Escherichia coli/metabolism; Escherichia coli Proteins/genetics; Escherichia coli Proteins/metabolism; Gene Expression Regulation, Bacterial; Histidine/metabolism; Leucine/chemistry; Leucine/metabolism; Leucine-Responsive Regulatory Protein; Membrane Proteins/genetics; Membrane Proteins/metabolism; Membrane Transport Proteins/genetics; Membrane Transport Proteins/metabolism; Methionine/metabolism; Transcription Factors; Transcription Initiation Site

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