Abstract
The effect of the ilvG671, ilvG468, and ilvG603 mutations (phenotype, IlvG+ Valr; formerly ilvO) upon proteins synthesized was determined by infection of irradiated Escherichia coli K-12 cells, using specifically constructed derivatives of lambda dilv phage. These ilvG alleles are similar to the previously studied ilvG2096(Valr) allele in that they activate the latent ilvG gene which is present in the wild-type strain, leading to the synthesis of a 62,000-dalton protein. In addition, all of these ilvG (Valr) alleles increase the synthesis of a 15,000-dalton protein. To localize the gene coding for the 15,000-dalton protein, the proteins produced in maxicells containing plasmids with specific deletions of ilv and rrnX DNA segments were analyzed. The gene coding for the 15,000-dalton protein was located within a region about 1,000 base pairs long between ilv and trpT. The function of the 15,000-dalton protein is not known.
MeSH Terms
Bacterial Proteins/genetics,isolation & purification
Bacteriophage lambda/genetics
Escherichia coli/genetics,metabolism
Genes, Bacterial
Isoleucine/biosynthesis
Molecular Weight
Mutation
Plasmids
Recombination, Genetic
Species Specificity
Valine/biosynthesis
Chemicals
Bacterial Proteins
Isoleucine
Valine
Authors & Affiliations
3 authors, click to expand affiliations / ORCID
Gray J E
Wallen J W
Calhoun D H
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28 references, click to expand
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