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J Gen Microbiol. 1985 May;131(5):1091-105.

Nucleotide sequence and complementation analysis of a polycistronic sporulation operon, spoVA, in Bacillus subtilis.


We have determined the nucleotide sequence of a 3706 bp stretch of Bacillus subtilis chromosomal DNA that complements all known spoVA mutations. The sequence contains five consecutive large open reading frames capable of encoding proteins of molecular weights ranging from approximately 15000 to 36000. Analysis using integrational plasmids suggests that the region is likely to be transcribed as a single mRNA. A novel form of complementation analysis, based on derivatives of bacteriophage phi 105 carrying the cloned spoVA locus, has been used to define four distinct complementation groups among the eight previously characterized spoVA mutations. The spoVA locus is the largest polycistronic sporulation operon yet characterized.

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