Distribution of the Rubredoxin Gene Among the Clostridium butyricum Species
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With PCR methods, the rubredoxin gene was systematically identified among 11 strains of Clostridium butyricum; this ubiquity means major functions in the metabolism of the Clostridia. The 11 PCR products allowed deduction of a sequence of 26 amino acids corresponding to positions 11–36 of the rubredoxin. They all contained the tyrosines at positions 11 and 13 and the phenylalanine at position 30 characteristic of the rubredoxin, but differed at positions 14–17, 20, 25, 29, and 31, allowing determination of three types of rubredoxins among these 11 strains of C. butyricum.
KeywordsTyrosine Phenylalanine Clostridium Major Function Clostridium Butyricum
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