| methanothermococcus okinawensis sp. nov., a thermophilic, methane-producing archaeon isolated from a western pacific deep-sea hydrothermal vent system. | a novel thermophilic, methane-producing archaeon was isolated from a deep-sea hydrothermal vent chimney at the iheya ridge, in the okinawa trough, japan. the cells were highly motile, irregular cocci, with a polar bundle of flagella. growth was observed between 40 and 75 degrees c (optimum 60-65 degrees c; 30 min doubling time) and between ph 4.5 and 8.5 (optimum ph 6.7). the isolate was a strictly anaerobic autotroph capable of using hydrogen and carbon dioxide as sole sources of energy and car ... | 2002 | 12148612 |