Query: NC_008818:357993 Hyperthermus butylicus DSM 5456, complete genome
Lineage: Hyperthermus butylicus; Hyperthermus; Pyrodictiaceae; Desulfurococcales; Crenarchaeota; Archaea
General Information: This organism was isolated from the sea floor of a solfataric (volcanic area that gives off gas) environment with temperatures up to 112 degrees C at a depth of 9 m, off the shore of Sao Miguel Island, Azores. Hyperthermophilic sulfur-reducing archaeon. This bacterium is an extreme hyperthermophilic, anaerobic, sulfur-reducing archaeon. Grows optimally at 95-106 degress C, with a NaCl concentration of 17 g/l and a pH of 7.0.
Subject: NC_015474:1216971 Pyrococcus sp. NA2 chromosome, complete genome
Lineage: Pyrococcus; Pyrococcus; Thermococcaceae; Thermococcales; Euryarchaeota; Archaea
General Information: Pyrococcus has similar characteristics of other thermoautotrophican archaea such as Archaeoglobus, and Methanococcus in the respect that they are all thermophilic and anaerobic. Pyrococcus differs, however, because its optimal growth temperature is nearly 100 °C and dwells at a greater sea depth than the other archaea. Studying Pyrococcus helps give insight to possible mechanisms used to endure extreme environmental conditions like high temperatures and high pressure.