Caulobacter sp. K31

Names Caulobacter sp. K31
Accession numbers NC_010333, NC_010335, NC_010338
Background Caulobacter sp. (strain K31) was isolated from a low-oxygen groundwater sample and is being sequenced for comparative genome analysis.This organism inhabits aquatic environments and plays an important part in biogeochemical cycling of organic nutrients. It undergoes an unusual developmental cycle in which a swarming motile cell becomes a stalked cell that is attached to a solid surface. The stalked cell then undergoes asymmetric cell division and produces one flagellated motile daughter cell and one stalked daughter cell. The stalked cell immediately undergoes replication and division, while in the swarmer cell these processes are inhibited. Thus, the asymmetric processes in this organism provide useful models for differentiation and development. Differentiation is managed through a control circuit that is comprised of various switches that regulate, through temporal expression, phosphorylation, and targeted proteolysis, the developmental process. This organism also contains a number of energy-dependent transport system, presumably enabling growth in the substrate-sparse aquatic environments that it lives in. (EBI Integr8)
Taxonomy
Kingdom:Bacteria
Phylum:Proteobacteria
Class:Alphaproteobacteria
Order:Caulobacterales
Family:Caulobacteraceae
Genus:Caulobacter
Species:K31
Strain K31
Complete Yes
Sequencing centre (12-FEB-2008) National Center for Biotechnology Information, NIH, Bethesda, MD 20894, USA
(24-JAN-2008) US DOE Joint Genome Institute, 2800 Mitchell Drive B100, Walnut Creek, CA 94598-1698, USA
Sequencing quality Level 6: Finished
Sequencing depth NA
Sequencing method Sanger
Isolation site Low-oxygen groundwater sample
Isolation country NA
Number of replicons 3
Gram staining properties Negative
Shape Bacilli
Mobility Yes
Flagellar presence Yes
Number of membranes 2
Oxygen requirements Aerobic
Optimal temperature NA
Temperature range Mesophilic
Habitat Fresh water
Biotic relationship Free living
Host name NA
Cell arrangement Singles
Sporulation NA
Metabolism Chlorophenol degrading
Energy source NA
Diseases None
Pathogenicity No