Hydrogenobacter thermophilus

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Hydrogenobacter thermophilus
Scientific classification
Kingdom: Bacteria
Division: Aquificae
Class: Aquificales
Family: Aquificaceae
Genus: Hydrogenobacter
Species: H. thermophilus
Binomial name
Hydrogenobacter thermophilus

Hydrogenobacter thermophilus (strain TK-6) is an obligately chemolithoautotrophic, extremely (and strictly) thermophilic hydrogen-oxidizing bacterium whose optimal growth temperature is around 70 to 75°C and was isolated from hot springs.[1] Phylogenetic analysis based on the 16S ribosomal DNA sequence showed that the strain has the deepest branching point among the Bacteria.[2]

In February 2010, Hydrogenobacter thermophilus strain TK-6 had its genome sequenced and was found to have 1,743,135 base pairs containing 1,963 genes.[3]


  1. ^ Kawasumi T, Igarashi Y, Kodama T, Minoda Y (1984). "Hydrogenobacter thermophilus gen. nov., sp. nov., an extremely thermophilic, aerobic, hydrogen-oxidizing bacterium". Int J Syst Bacteriol 34: 5–10. doi:10.1099/00207713-34-1-5. 
  2. ^ Pitulle C, Yang Y, Marchiani M, Moore E R B, Siefert J L, Aragno M, Jurtshuk P, Jr, Fox G E (1994). "Phylogenetic position of Hydrogenobacter". Int J Syst Bacteriol 44 (4): 620–626. doi:10.1099/00207713-44-4-620. PMID 7981093. 
  3. ^ "Hydrogenobacter thermophilus TK-6 project". Entrez Genome Project. NCBI. 2010-02-12.