1996
DOI: 10.1016/0378-1097(96)00046-8
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Promoter analysis of the catalase-peroxidase gene (cpeA) from Rhodobacter capsulatus

Abstract: The expression of the Rhodobacter capsulatus catalase-peroxidase (cpeA) was studied by in-frame fusions of the upstream region of the cpeA gene to a promoter-less lacZ gene. The transcription of the cpeA gene is about 20-50-fold higher under aerobic-dark than under anaerobic-light conditions. The promoter was localized within a 69-bp upstream DNA region. The transcription start site, determined by primer extension, is 28 bases upstream from the initiation codon, confirming the postulated promoter localized by … Show more

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Cited by 2 publications
(2 citation statements)
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“…Among the others, L. pneumophila CuZnSOD is also periplasmic (52), but the catalase-peroxidases of C. crescentus (51) and R. capsulatus (18,19,27,29) have not been subjected to localization studies and are not predicted to contain a signal peptide (PSORT Prediction, http://psort.nibb.ac.jp/form.html; Signal P V1.1, http://www.cbs.dtu.dk/services/signalP/). Our studies raise the question of whether a periplasmic location is a sine qua non for the stationary-phase function.…”
Section: Discussionmentioning
confidence: 99%
“…Among the others, L. pneumophila CuZnSOD is also periplasmic (52), but the catalase-peroxidases of C. crescentus (51) and R. capsulatus (18,19,27,29) have not been subjected to localization studies and are not predicted to contain a signal peptide (PSORT Prediction, http://psort.nibb.ac.jp/form.html; Signal P V1.1, http://www.cbs.dtu.dk/services/signalP/). Our studies raise the question of whether a periplasmic location is a sine qua non for the stationary-phase function.…”
Section: Discussionmentioning
confidence: 99%
“…To our knowledge, the role of the second peroxidase has not yet been described. Nevertheless, subsequent analysis of the cpeA gene, coding for the catalase peroxidase, shows expression is higher under aerobic conditions, and it is also peroxide inducible [37,38].…”
Section: Coping Mechanismsmentioning
confidence: 98%