Kutukova EA, Livshits VA, Altman IP, Ptitsyn LR, Zyiatdinov MH, Tokmakova IL, Zakataeva NP. TheyeaS(leuE) gene ofEscherichia coliencodes an exporter of leucine, and the Lrp protein regulates its expression.
FEBS Lett 2005;
579:4629-34. [PMID:
16098526 DOI:
10.1016/j.febslet.2005.07.031]
[Citation(s) in RCA: 62] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2005] [Revised: 07/01/2005] [Accepted: 07/12/2005] [Indexed: 10/25/2022]
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.
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