Sulfolobus

Sulfolobus is a genus of aerobic archaea that grow in hot, acidic environments. Its members are models for studying archaeal biology and enzymes adapted to extreme conditions.

Archaea: Archaea are single-celled organisms distinct from bacteria and eukaryotes, with distinctive membranes and molecular machinery. Sulfolobus belongs to this domain, whose unusual cell biology frames its defining traits.
Thermostability: Thermostability is the capacity of a molecule or biological system to retain structure and function at high temperatures. Sulfolobus proteins and cellular structures remain functional at temperatures that destabilize many biomolecules.
Thermostable enzyme: A thermostable enzyme retains catalytic activity after exposure to elevated temperatures. Sulfolobus enzymes are studied for reactions that benefit from heat-resistant catalysts.
Thomas D. Brock: Thomas D. Brock was an American microbiologist whose work established the study of microorganisms in hot springs. His research helped make extreme-environment microbes, including thermoacidophiles, subjects of modern microbiology.
Acidophile: An acidophile is an organism that grows optimally at low pH. Sulfolobus is part of the broader group defined by adaptation to acidic conditions.
Thermoacidophile: A thermoacidophile is an organism adapted to grow at both high temperatures and low pH. This ecological category captures the paired extremes in which many Sulfolobus species thrive.
Protein folding: Protein folding is the process by which a polypeptide adopts a functional three-dimensional structure. High-temperature growth makes stable folding and protein quality control essential in Sulfolobus.
DNA polymerase: DNA polymerase is an enzyme that synthesizes DNA using a template strand. Thermostable polymerases from related archaea support high-temperature DNA amplification and sequencing.
Thermal biology: Thermal biology studies how organisms respond to, regulate, and function across temperature conditions. Sulfolobus became a prominent system for understanding life at unusually high temperatures.
Thermophile: A thermophile is an organism adapted to grow at high temperatures. This broader category includes Sulfolobus as well as heat-loving bacteria and archaea.

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