TABLE 13.

Occurrence, or lack thereof, of the hsp70(dnaK) gene among archaea and representatives of thermophilic and hyperthermophilic bacteria

Organism	OTG (°C)	hsp70 (dnaK) present	Genome size (Mb)	Demonstrated bya:	Reference(s)
Archaea
Methanosarcina mazei S-6	37	Yes	2.8	S, N, W, seq.	42, 44, 182
Methanosarcina mazei JC3	37	Yes	NDb	N	42
Methanosarcina mazei LYC	37	Yes	ND	N	42
Methanosarcina sp. strain JVC	37	Yes	ND	N	42
Methanosarcina acetivorans C2A	37	Yes	2.7	N	42
Methanosarcina barkeri	37	Yes	2.7	S	10
Methanosarcina thermophila TM-1	50	Yes	2.7	S, N, seq.	126, 164
Methanospirillum hungateii	37	No	ND	S	164
Methanobacterium thermoautotrophicum ΔH	65	Yes	1.7	seq.	263
Methanococcus voltae	37	No	ND	S, W	119
Methanococcus vannielii	37	No	ND	S, P	99
Methanococcus jannaschii	85	No	1.7	S, seq.	31, 164
Methanothermus fervidus	85	No	ND	S, P	99, 164
Methanopyrus kandleri	100	No	ND	S, P	99
Haloarcula marismortui	45	Yes	ND	seq.	110
Halobacterium cutirubrum	45	Yes	ND	seq.	111
Halobacterium halobium	45	Yes	ND	S, P	99
Thermoplasma acidophilum	55	Yes	1.7	seq., P	99, 111
Sulfolobus solfataricus	70	No	3.1	S, P	99
Sulfolobus sp.	70	No	ND	S	164
Archaeoglobus fulgidus	83	No	2.2	seq., P	99, 151
Desulfurococcus mobilis	85	No	ND	S, P	99
Thermococcus tenax	88	No	ND	S, P	99
Pyrococcus furiosus	100	No	2.0	seq.	293a
Pyrococcus horikoshii	100	No	1.7	seq.	144, 145
Pyrococcus woesei	100	No	ND	S, P	99
Pyrococcus abyssi	100	No	1.8	seq.	P. abyssi; website
Pyrobaculum aerophilum	100	No	2.2	seq.	79, 79a
Aeropyrum pernix K1	100	No	1.7	seq.	143
Bacteria
Thermus thermophilus	70	Yes	ND	seq.	220
Thermomicrobium roseum	70	Yes	ND	seq.	108
Thermotoga maritima	80	Yes	ND	seq.	99, 213
Aquifex aeolicus	83	Yes	ND	seq.	58
Aquifex pyrophilus	83	Yes	ND	seq.	99

^aS, N, and W, Southern, Northern, and Western blotting, respectively; P, PCR; seq., sequencing of gene or genome. 

^bND, not determined.