PlumX Metrics
Embed PlumX Metrics

Quantitative analysis of expression of two circadian clock-controlled gene clusters coding for the bidirectional hydrogenase in the cyanobacterium Synechococcus sp. PCC7942

Molecular Microbiology, ISSN: 0950-382X, Vol: 41, Issue: 6, Page: 1409-1417
2001
  • 30
    Citations
  • 0
    Usage
  • 23
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

Article Description

Hydrogen metabolism is of central interest in cyanobacterial research because of its potential applications. The gene expression and physiological role of the cyanobacterial bidirectional NAD(P)- reducing hydrogenase are poorly understood. Transcription rates of hoxEF and hoxUYH encoding this enzyme have been studied in Synechococcus sp. PCC7942. P activity was about three times higher than that of P. Circadian phasing of both promoters was found to be synchronous and influenced expression levels by at least one order of magnitude. This is the first demonstration of circadian control of gene expression for any hydrogenase. For the majority of P-driven messages, transcription presumably terminates between hoxU and hoxH. Being part of a olycistronic hoxUYHW... operon, hoxW, encoding a protease involved in C-terminal processing of the hydrogenase large-subunit HoxH, is mainly expressed by its own promoter, P. The complex transcript formation may be a key feature for controlling bidirectional hydrogenase expression in vivo.

Provide Feedback

Have ideas for a new metric? Would you like to see something else here?Let us know