DNA sequence and in vitro mutagenesis of the gene encoding the fructose-1,6-diphosphate-dependent L-(+)-lactate dehydrogenase of Streptococcus mutans.
AUTOR(ES)
Duncan, M J
RESUMO
Previously, the fructose-1,6-diphosphate-dependent L-(+)-lactate dehydrogenase gene of Streptococcus mutans JH1000 was cloned into Escherichia coli (J. D. Hillman, M. J. Duncan, and K. P. Stashenko, Infect. Immun. 58:1290-1295, 1990). In the present study, the nucleotide sequence of 1.29 kb of S. mutans DNA which contained the promoter and protein-coding region of the gene was determined. In vitro disruption of the gene was achieved by deletion of the promoter and a major portion of the protein-coding sequence. Subsequently, a tetracycline resistance gene from S. mutans was inserted at the deletion site as a marker for selection. In addition, evidence from Southern hybridization showed that S. mutans JH1000 contained a single copy of the lactate dehydrogenase gene.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=258979Documentos Relacionados
- Cloning and expression of the gene encoding the fructose-1,6-diphosphate-dependent L-(+)-lactate dehydrogenase of Streptococcus mutans.
- Fructose-1,6-Diphosphate-Dependent Lactate Dehydrogenase from a Cariogenic Streptococcus: Purification and Regulatory Properties
- L-(+)-lactate dehydrogenase deficiency is lethal in Streptococcus mutans.
- Evidence that L-(+)-lactate dehydrogenase deficiency is lethal in Streptococcus mutans.
- Fructose 1,6-diphosphate-activated L-lactate dehydrogenase from Streptococcus lactis: kinetic properties and factors affecting activation.
