Query: NC_015474:644552 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.
Subject: NC_007181:1094422 Sulfolobus acidocaldarius DSM 639, complete genome
Lineage: Sulfolobus acidocaldarius; Sulfolobus; Sulfolobaceae; Sulfolobales; Crenarchaeota; Archaea
General Information: Sulfolobus acidocaldarius DSM 639 was isolated from and acidic hot spring in Yellowstone National Park. Extreme thermoacidophilic sulfur-oxidizing archaeon. This organsim is an extreme thermoacidophilic, sulfur-oxidizing archaeon commonly found in hot springs growing at very high temperatures. This obligate aerobe is immotile and grows at a temperature of 55-85 degrees C with optimal growth at 70-75 degrees C. The pH for growth is 1-6 with an optimum pH 2-3.