Nautilia profundicola sp. nov., a thermophilic, sulfur-reducing epsilonproteobacterium from deep-sea hydrothermal vents Smith, Julie L. and Campbell, Barbara J. and Hanson, Thomas E. and Zhang, Chuanlun L. and Cary, S. Craig,, 58, 1598-1602 (2008), doi = https://doi.org/10.1099/ijs.0.65435-0, publicationName = Microbiology Society, issn = 1466-5026, abstract= A thermophilic, strictly anaerobic, sulfur-reducing epsilonproteobacterium (strain AmHT) isolated from deep-sea hydrothermal vents is described. Cells were motile, Gram-negative rods. Growth was observed at 30–55 °C, pH 6.0–9.0 and 2–5 % (w/v) NaCl. Chemolithoautotrophic growth occurred with molecular hydrogen or formate as the electron donor and elemental sulfur as the electron acceptor, producing hydrogen sulfide. Heterotrophic and mixotrophic growth occurred with formate as a source of carbon. The dominant phospholipid fatty acids were C18 : 1 ω7c (73.26 % of the total), C16 : 1 ω7c (12.70 %) and C16 : 0 (12.27 %). The genomic DNA G+C content was 33.5 mol%. Phylogenetic analysis based on 16S rRNA gene sequences placed strain AmHT within the family Nautiliaceae of the Epsilonproteobacteria. DNA–DNA hybridization experiments between strain AmHT and Nautilia lithotrophica DSM 13520T revealed a level of relatedness of 34.6 % between the two strains. Based on physiological and phylogenetic characteristics, strain AmHT is considered to represent a novel species of the genus Nautilia, for which the name Nautilia profundicola sp. nov. is proposed. The type strain is AmHT (=ATCC BAA-1463T =DSM 18972T)., language=, type=