Abstract
Hydrogenobacter thermophilus Kawasumi et al. 1984 is the type species of the genus Hydrogenobacter. H. thermophilus was the first obligate autotrophic organism reported among aerobic hydrogen-oxidizing bacteria. Strain TK-6T is of interest because of the unusually efficient hydrogen-oxidizing ability of this strain, which results in a faster generation time compared to other autotrophs. It is also able to grow anaerobically using nitrate as an electron acceptor when molecular hydrogen is used as the energy source, and able to aerobically fix CO2 via the reductive tricarboxylic acid cycle. This is the fifth completed genome sequence in the family Aquificaceae, and the second genome sequence determined from a strain derived from the original isolate. Here we describe the features of this organism, together with the complete genome sequence and annotation. The 1,742,932 bp long genome with its 1,899 protein-coding and 49 RNA genes is a part of the Genomic Encyclopedia of Bacteria and Archaea project.
Highlights
Strain TK-6T (= DSM 6534 = JCM 7687 = NBRC 102181) is the type strain of Hydrogenobacter thermophilus, which in turn is the type species of the genus Hydrogenobacter [1]
Strain TK-6T was isolated from hot springs located on the Izu peninsula in Japan [1]
Some strains of H. thermophilus were isolated from a geothermal spring in Tuscany, Italy [5,6]
Summary
Another genome sequence of a strain derived from the original isolate, presumably held in the lab of one of the co-authors, has been published recently without much metadata [12]. We present a summary classification and a set of features for H. thermophilus strain TK-6T, together with the description of the complete genomic sequencing and annotation.
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