Circadian clocks in prokaryotes.

Johnson CH, Golden SS, Ishiura M, Kondo T
Mol Microbiol. 1996 21 (1): 5-11

PMID: 8843429 · DOI:10.1046/j.1365-2958.1996.00613.x

Prokaryotes have long been thought incapable of expressing circadian (daily) rhythms. Recently, however, such biological 'clocks' have been discovered in several species of cyanobacteria. These endogenous timekeepers control gene expression on a global level in cyanobacteria. Even in cyanobacterial cultures that are growing with average doubling times more rapid than one per 24 h, the circadian clock controls gene expression and cell division. We have isolated mutants of the cyanobacterial circadian pacemaker and are currently characterizing the loci responsible for their altered period phenotypes.

MeSH Terms (5)

Cell Division Circadian Rhythm Cyanobacteria Gene Expression Regulation, Bacterial Prokaryotic Cells

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