Hahella chejuensis KCTC 2396
Names | Hahella chejuensis KCTC 2396 |
---|---|
Accession numbers | NC_007645 |
Background | Hahella chejuensis strain KCTC 2396 is a marine red-pigmented gammaproteobacterium belonging to the Oceanospiralles clade. It was originally isolated from the coastal marine sediment of the southernmost island in Korea. It consists of a single circular chromosome and contains 6783 predicted genes. H.chejuensis is a heterotrophic organism living on various resources from mineral to organic materials and even other aquatic organisms. It produces a red pigment, identified as prodigiosin, which has a very efficient lytic activity against the dinoflagellate Cochlodinium polykrikoides. Increases in the population of certain dinoflagellates result in phenomena called algal blooms or red tides, which have become more frequent in recent years throughout the world in the coastal waters. Red tides affect the health of human and marine organisms but also regional economies and marine ecosystems. Hahella chejuensis possesses a complete repertoire of enzyme for central carbon metabolism, including glycolysis, pentose phosphate pathway and TCA cycle as well as those required for biosynthesis of nucleotides and 20 amino acids. Two sets of genes coding for flagellar biosynthesis, type III secretion systems and F0F1-type ATP synthesis have been identified. This multiplicity is more likely to originate from horizontal transfer rather than from a gene duplication inside H.chejuensis genome. Horizontal gene transfer seems to have played an essential role in shaping H.chejuensis as it appears to have at least 69 genomic islands. (EBI Integr8) |
Taxonomy | |
Kingdom: | Bacteria |
Phylum: | Proteobacteria |
Class: | Gammaproteobacteria |
Order: | Oceanospirillales |
Family: | Hahellaceae |
Genus: | Hahella |
Species: | chejuensis |
Strain | KCTC 2396 |
Complete | Yes |
Sequencing centre | (15-DEC-2005) National Center for Biotechnology Information, NIH, Bethesda, MD 20894, USA (18-OCT-2005) Genome Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon Yuseong |
Sequencing quality | Level 6: Finished |
Sequencing depth | NA |
Sequencing method | NA |
Isolation site | "Marine sediment from Cheju Island, Republic of Korea" |
Isolation country | Korea |
Number of replicons | 1 |
Gram staining properties | Negative |
Shape | Bacilli |
Mobility | Yes |
Flagellar presence | Yes |
Number of membranes | 2 |
Oxygen requirements | Facultative |
Optimal temperature | NA |
Temperature range | Mesophilic |
Habitat | Aquatic |
Biotic relationship | Free living |
Host name | NA |
Cell arrangement | NA |
Sporulation | NA |
Metabolism | NA |
Energy source | Heterotroph |
Diseases | NA |
Pathogenicity | No |
Glycolysis / Gluconeogenesis
Citrate cycle (TCA cycle)
Pentose phosphate pathway
Fatty acid metabolism
Synthesis and degradation of ketone bodies
Ubiquinone and other terpenoid-quinone biosynthesis
Purine metabolism
Pyrimidine metabolism
Alanine, aspartate and glutamate metabolism
Glycine, serine and threonine metabolism
Cysteine and methionine metabolism
Valine, leucine and isoleucine degradation
Geraniol degradation
Valine, leucine and isoleucine biosynthesis
Lysine biosynthesis
Arginine and proline metabolism
Histidine metabolism
Phenylalanine, tyrosine and tryptophan biosynthesis
Taurine and hypotaurine metabolism
Selenocompound metabolism
Cyanoamino acid metabolism
D-Glutamine and D-glutamate metabolism
D-Alanine metabolism
Glutathione metabolism
Streptomycin biosynthesis
Lipopolysaccharide biosynthesis
Peptidoglycan biosynthesis
Pyruvate metabolism
Chloroalkane and chloroalkene degradation
Glyoxylate and dicarboxylate metabolism
Propanoate metabolism
Butanoate metabolism
C5-Branched dibasic acid metabolism
One carbon pool by folate
Thiamine metabolism
Riboflavin metabolism
Vitamin B6 metabolism
Nicotinate and nicotinamide metabolism
Pantothenate and CoA biosynthesis
Biotin metabolism
Lipoic acid metabolism
Folate biosynthesis
Porphyrin and chlorophyll metabolism
Terpenoid backbone biosynthesis
Nitrogen metabolism
Sulfur metabolism
Aminoacyl-tRNA biosynthesis
Citrate cycle (TCA cycle)
Pentose phosphate pathway
Fatty acid metabolism
Synthesis and degradation of ketone bodies
Ubiquinone and other terpenoid-quinone biosynthesis
Purine metabolism
Pyrimidine metabolism
Alanine, aspartate and glutamate metabolism
Glycine, serine and threonine metabolism
Cysteine and methionine metabolism
Valine, leucine and isoleucine degradation
Geraniol degradation
Valine, leucine and isoleucine biosynthesis
Lysine biosynthesis
Arginine and proline metabolism
Histidine metabolism
Phenylalanine, tyrosine and tryptophan biosynthesis
Taurine and hypotaurine metabolism
Selenocompound metabolism
Cyanoamino acid metabolism
D-Glutamine and D-glutamate metabolism
D-Alanine metabolism
Glutathione metabolism
Streptomycin biosynthesis
Lipopolysaccharide biosynthesis
Peptidoglycan biosynthesis
Pyruvate metabolism
Chloroalkane and chloroalkene degradation
Glyoxylate and dicarboxylate metabolism
Propanoate metabolism
Butanoate metabolism
C5-Branched dibasic acid metabolism
One carbon pool by folate
Thiamine metabolism
Riboflavin metabolism
Vitamin B6 metabolism
Nicotinate and nicotinamide metabolism
Pantothenate and CoA biosynthesis
Biotin metabolism
Lipoic acid metabolism
Folate biosynthesis
Porphyrin and chlorophyll metabolism
Terpenoid backbone biosynthesis
Nitrogen metabolism
Sulfur metabolism
Aminoacyl-tRNA biosynthesis