%0 Journal Article %A Slobodkina, G. B. %A Lebedinsky, A. V. %A Chernyh, N. A. %A Bonch-Osmolovskaya, E. A. %A Slobodkin, A. I. %T Pyrobaculum ferrireducens sp. nov., a hyperthermophilic Fe(III)-, selenate- and arsenate-reducing crenarchaeon isolated from a hot spring %D 2015 %J International Journal of Systematic and Evolutionary Microbiology, %V 65 %N Pt_3 %P 851-856 %@ 1466-5034 %R https://doi.org/10.1099/ijs.0.000027 %I Microbiology Society, %X A novel hyperthermophilic, anaerobic, archaeon was isolated from a terrestrial hot spring at Uzon Caldera, Kronotsky Nature Reserve, Kamchatka, Russia. The isolate, strain 1860T, grew optimally at 90–95 °C and pH 6.0–7.0. The cells were non-motile straight rods, 1.5–5.0 µm in length, covered with surface-layer lattice. Strain 1860T utilized complex proteinaceous compounds as electron donors and ferrihydrite, Fe(III) citrate, nitrate, thiosulfate, selenite, selenate and arsenate as electron acceptors for growth. The sequence of the 16S rRNA gene of strain 1860T had 97.9–98.7 % similarity with those of members of the genus Pyrobaculum . On the basis of its physiological properties and phylogenetic analyses including in silico genome to genome hybridization, the isolate is considered to represent a novel species, for which the name Pyrobaculum ferrireducens sp. nov. is proposed. The type strain is 1860T ( = DSM 28942T = VKM B-2856T). %U https://www.microbiologyresearch.org/content/journal/ijsem/10.1099/ijs.0.000027