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    J Bacteriol. 1980 Jun;142(3):1025-8.

    Biotin regulatory (bir) mutations of Escherichia coli.

    Abstract

    Most mutants selected for derepression of the biotin operon required elevated concentrations of biotin for growth. Mutant extracts were deficient in holoenzyme synthetase activity.

    PMID:
    6991489
    [PubMed - indexed for MEDLINE]
    PMCID:
    PMC294133
    Free PMC Article

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