A Fine Structure Map of the Salmonella Histidine Operator-Promoter
AUTOR(ES)
Ely, Bert
RESUMO
Over 100 regulatory mutations linked to the histidine (his) operon of S. typhimurium have been isolated. They all map in a region estimated to be several hundred base pairs in length located at one end of the his operon ("the hisO region"). The mutations are located at sixteen recombinationally separable sites or are deletions encompassing several sites. Data obtained from pairs of reciprocal three-point tests show that "constitutive" (high enzyme levels) and "promoter-like" (low enzyme levels) hisO mutations are interspersed on the genetic map. In a few crosses, recombination was not observed to occur between markers shown to occupy different sites based on behavior in other recombination tests.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=1213223Documentos Relacionados
- Physiological Studies of Salmonella Histidine Operator-Promoter Mutants
- Operator-promoter functions in the threonine operon of Escherichia coli.
- Nucleotide sequence of the operator-promoter region of the galactose operon of Escherichia coli.
- Regulation of galactose operon at the gal operator-promoter region in Escherichia coli K-12.
- Fine-structure map of the histidine transport genes in Salmonella typhimurium.