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An lrp-like gene of Bacillus subtilis involved in branched-chain amino acid transport

Publiceringsår: 1997
Språk: Engelska
Sidor: 5448-5457
Publikation/Tidskrift/Serie: Journal of bacteriology
Volym: 179
Nummer: 17
Dokumenttyp: Artikel
Förlag: American Society for Microbiology


The azlB locus of Bacillus subtilis was defined previously by a mutation conferring resistance to a leucine analog, 4-azaleucine (J. B. Ward, Jr., and S. A. Zahler, J. Bacteriol. 116:727-735, 1973). In this report, azlB is shown to be the first gene of an operon apparently involved in branched-chain amino acid transport. The product of the azlB gene is an Lrp-like protein that negatively regulates expression of the azlBCDEF operon. Resistance to 4-azaleucine in azlB mutants is due to overproduction of AzlC and AzlD, two novel hydrophobic proteins.



  • Biology and Life Sciences


  • ISSN: 0021-9193

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