Chromosomal location of the gene encoding phosphoribosylpyrophosphate synthetase in Escherichia coli

Bjarne Hove-Jensen

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    Abstract

    A mutant of Escherichia coli with a partially defective phosphoribosylpyrophosphate synthetase (ribosephosphate pyrophosphokinase) has been characterized genetically. The genetic lesion causing the altered phosphoribosylpyrophosphate synthetase, prs, was mapped at 26 min on the linkage map by conjugation. Transductional analysis of the prs region established the gene order as purB-fadR-dadR-tre-pth-prs-hemA-trp. Two additional mutations were identified in the mutant: one in gsk, the gene encoding guanosine kinase, and one in lon, conferring a mucoid colony morphology. The contribution of each mutation to the phenotype of the mutant has been evaluated.
    OriginalsprogEngelsk
    TidsskriftJournal of Bacteriology
    Vol/bind154
    Udgave nummer1
    Sider (fra-til)177-184
    ISSN0021-9193
    StatusUdgivet - 1983

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