Abstract

The nucleotide sequence of a convergent gene with the same bidirectional transcriptional terminator as the Vibrio fischeri lux operon has been determined. This gene codes for a polypeptide of 147 amino acids which is related in sequence to the polypeptide coded by the first gene ( ribG) of the rib operon of Bacillus subtilis as well as deoxycytidylate deaminase of T4 bacteriophage and Saccharomyces cerevisiae. These results raise the possibility of a linkage between the regulation of the lux genes and riboflavin synthesis in Vibrio fischeri.

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