Influence of CrgA on assembly of the cell division protein FtsZ during development of Streptomyces coelicolor
Author
Summary, in English
The product of the crgA gene of Streptomyces coelicolor represents a novel family of small proteins. A single orthologous gene is located close to the origin of replication of all fully sequenced actinomycete genomes and borders a conserved gene cluster implicated in cell growth and division. In S. coelicolor, CrgA is important for coordinating growth and cell division in sporogenic hyphae. In this study, we demonstrate that CrgA is an integral membrane protein whose peak expression is coordinated with the onset of development of aerial hyphae. The protein localizes to discrete foci away from growing hyphal tips. Upon overexpression, CrgA localizes to apical syncytial cells of aerial hyphae and inhibits the formation of productive cytokinetic rings of the bacterial tubulin homolog FtsZ, leading to proteolytic turnover of this major cell division determinant. In the absence of known prokaryotic cell division inhibitors in actinomycetes, CrgA may have an important conserved function influencing Z-ring formation in these bacteria.
Department/s
Publishing year
2006
Language
English
Pages
1540-1550
Publication/Series
Journal of Bacteriology
Volume
188
Issue
4
Links
Document type
Journal article
Publisher
American Society for Microbiology
Topic
- Microbiology
Status
Published
Research group
- Microbiology Group
ISBN/ISSN/Other
- ISSN: 0021-9193