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The involvement of CdhR in Porphyromonas gingivalis during Nitric Oxide stress

ABSTRACT: This SuperSeries is composed of the SubSeries listed below.

ORGANISM(S): Porphyromonas gingivalis Porphyromonas gingivalis W83 Haemophilus influenzae

PROVIDER: GSE224067 | GEO | 2023/02/03

REPOSITORIES: GEO

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The involvement of CdhR in Porphyromonas gingivalis during Nitric Oxide stress [microarray]

Project description:To understand the role of CdhR and its adjacent gene PG1236 in nitric oxide (NO) stress resistance, isogenic mutants P. gingivalis FLL457 (ΔPG1237::ermF), FLL458 (ΔPG1236::ermF) and FLL459 (ΔPG1236-37::ermF) were made by allelic exchange mutagenesis and their gene expression was studied under control and NO stress conditions. DNA microarray analysis of FLL457 showed that approximately 2% of the genes were up regulated and over 1% of the genes down regulated. Transcriptome analysis of FLL458 and FLL459 under NO stress showed similar modulation patterns in both mutants for a few genes. The PG1236-7 gene cluster seemed to be part of the same transcriptional unit that showed increased expression under NO stress. Recombinant CdhR showed binding activity to the predicted promoter regions of PG1459 and PG0495.

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