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. 1981 Jan;145(1):321–327. doi: 10.1128/jb.145.1.321-327.1981

Menaquinone biosynthesis in Bacillus subtilis: isolation of men mutants and evidence for clustering of men genes.

H W Taber, E A Dellers, L R Lombardo
PMCID: PMC217275  PMID: 6780514

Abstract

Menaquinone (vitamin K2)-deficient mutants of Bacillus subtilis were selected by simultaneous resistance to two aminoglycoside antibiotics. These men mutants fell into two groups: group I, in which the nutritional requirement was satisfied either by o-succinylbenzoic acid or by 1,4-dihydroxy-2-naphthoic acid; and group II, comprising those capable of growing only when supplemented with 1,4-dihydroxy-2-naphthoic acid. The latter group could be further subdivided into two classes on the basis of syntrophy experiments, fine-structure genetic mapping, and in vitro complementation by cell-free extracts (Meganathan et al., J. Bacteriol., 145:328-332, 1981). These subclasses of group II defined the menB and menE genes, whereas group I appeared to comprise mutations in the menC and menD genes. All of the men mutations tested, whether occurring in menB, menE, or menC,D, could be placed by genetic mapping with bacteriophage PBS1 between bioB and ald on the B. subtilis genome.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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