Gloeobacter violaceus PCC 7421

Gloeobacter_violaceus
Names Gloeobacter violaceus PCC 7421
Accession numbers NC_005125
Background Gloeobacter violaceus PCC 7421 is a unicellular cyanobacterium. Cyanobacteria are aquatic and photosynthetic (which results in them being labelled blue-green algae) they live in the water, and can manufacture their own food, they are quite small and usually unicellular, though they often grow in colonies large enough to be visible with the human eye.Gloeobacter violaceus performs photosynthesis in a different part of the cell than other cyanobacteria.Comparison of the assigned gene components with those of other cyanobacteria has unveiled distinctive features of the G. violaceus genome. Genes for PsaI, PsaJ, PsaK, and PsaX for Photosystem I and PsbY, PsbZ and Psb27 for Photosystem II were missing, and those for PsaF, PsbO, PsbU, and PsbV were poorly conserved. cpcG for a rod core linker peptide for phycobilisomes and nblA related to the degradation of phycobilisomes were also missing. Potential signal peptides of the presumptive products of petJ and petE for soluble electron transfer catalysts were less conserved than the remaining portions. These observations may be related to the fact that photosynthesis in G. violaceus takes place not in thylakoid membranes but in the cytoplasmic membrane.A large number of genes for sigma factors and transcription factors in the LuxR, LysR, PadR, TetR, and MarR families could be identified, while those for major elements for circadian clock, kaiABC were not found.The sequenced strain PCC 7421 was found in rock in Switzerland.Phylogenetic analysis using multiple criteria strongly suggest that this strain is a member of early branching lineage. (From http://www.ebi.ac.uk/2can/genomes/bacteria.html) (BacMap)
Taxonomy
Kingdom:Bacteria
Phylum:Cyanobacteria
Class:Gloeobacteria
Order:Gloeobacterales
Family:NA
Genus:Gloeobacter
Species:violaceus
Strain PCC 7421
Complete Yes
Sequencing centre (06-OCT-2003) National Center for Biotechnology Information, NIH, Bethesda, MD 20894, USA
(15-AUG-2003) Takakazu Kaneko, Kazusa DNA Research Institute, The First Laboratory for Plant Gene Research
2-6-7
Sequencing quality Level 6: Finished
Sequencing depth NA
Sequencing method NA
Isolation site Calcereous rock in Switzerland
Isolation country Switzerland
Number of replicons 1
Gram staining properties Negative
Shape Bacilli
Mobility No
Flagellar presence No
Number of membranes 2
Oxygen requirements NA
Optimal temperature NA
Temperature range Mesophilic
Habitat Terrestrial
Biotic relationship Free living
Host name NA
Cell arrangement NA
Sporulation NA
Metabolism NA
Energy source Photoautotroph, Photosynthetic
Diseases NA
Pathogenicity No