Product of the Lactococcus lactis gene required for malolactic fermentation is homologous to a family of positive regulators.
AUTOR(ES)
Renault, P
RESUMO
Malolactic fermentation is a secondary fermentation that many lactic acid bacteria can carry out when L-malate is present in the medium. The activation of the malolactic system in Lactococcus lactis is mediated by a locus we call mleR. Induction of the genes necessary to perform malolactic fermentation occurs only in bacteria with a functional copy of mleR. The mleR gene consists of one open reading frame capable of coding for a protein with a calculated molecular mass of 33,813 daltons. The amino acid sequence of the predicted MleR gene product is homologous to that of positive activators in gram-negative bacteria: LysR, IlvY gene products of Escherichia coli, MetR, CysB of Salmonella typhimurium, AmpR of Enterobacter cloacae, NodD of Rhizobium sp., and TrpI of Pseudomonas aeruginosa.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=210022Documentos Relacionados
- The lemA gene required for pathogenicity of Pseudomonas syringae pv. syringae on bean is a member of a family of two-component regulators.
- A Transcriptional Activator, Homologous to the Bacillus subtilis PurR Repressor, Is Required for Expression of Purine Biosynthetic Genes in Lactococcus lactis
- A gene essential for Agrobacterium virulence is homologous to a family of positive regulatory loci.
- The XylS/AraC family of regulators.
- Cloning of a chromosomal gene required for phage infection of Lactococcus lactis subsp. lactis C2.