 However, promoter sequences occur upstream of the "nqr" operon in the distantly related organism "Vibrio anguillarum".The fact that these promoters do not occur upstream of (or in the same inter-genic region) as "nqrA"-"Marinomonas" RNAs raises questions about the putative "cis"-regulatory function of these RNAs.However, it is possible that the promoters that were determined in "Vibrio anguillarum" are simply to diverged to be detected in "Marinomonas" species.