| pyrococcus horikoshii sp. nov., a hyperthermophilic archaeon isolated from a hydrothermal vent at the okinawa trough. | a hyperthermophilic, anaerobic archaeon was isolated from hydrothermal fluid samples obtained at the okinawa trough vents in the ne pacific ocean, at a depth of 1395m. the strain is obligately heterotrophic, and utilizes complex proteinaceous media (peptone, tryptone, or yeast extract), or a 21-amino-acid mixture supplemented with vitamins, as growth substrates. sulfur greatly enhances growth. the cells are irregular cocci with a tuft of flagella, growing optimally at 98 degrees c (maximum growt ... | 1998 | 9672687 |