Methanohalophilus

SuperSet	Prokaryote, Archaea, Methanogens
Compare	Methanogens subgroup 1: Methanobacterium ,Methanobrevibacter, Methanosphaera ,Metthanothermus Methanogens Subgroup 2 : Methanococcus ,Methanocorpusculum , Methanoculleus , Methanogenium Methanolacinia paynteri, Methanomicrobium mobile , Methanoplanus , Methanospirillum hungatei Methanogens subgroup 3: Methanococcoides methylutens , Methanohalobium evstigatus , Methanohalophilus , Methanolobus , Methanosarcina , Methanothrix
Contrast	Eubacteria Methanogens Cell Wall-Less Archaeobacteria Sulfate Reducing Archaeobacteria Halophilic Archaeobacteria Extremely Thermophilic Archaeobacteria
Subset

Staining	Gram negative
Morphology	extremely irregular cocci (0.5-3 um in diameter) found as single cells or in pairs
Motility	nonmotile
Specialized structures	no endospores

Tropism
Oxygen	Very strictly anaerobic
pH
Temperature	optimum temperature 35-45 ^oC
Requires	optimum NaCl concentration is 0.5-2 M, bitoin and p-amnobenzoate may be required
Produces	energy metabolism occurs by dismutation of methylamines to methane, carbon dioxide and ammonia or sometimes methylsulfides to methan, carbon dioxide and hydrogen sulfide Acetate, formate and H₂ are not catabolized. Ammonia or methyamine is the sole nitrogen source, and sulfide or methylsulfide may serve as the sulfur source
Enzymes
Unique features	Cells do not contain muramic acid. Lipids are predominantly isoprenoid hydrocarbons ether-linked to glycerol. Cells contain coenzyme M and coenzyme F420 Susceptible to lysis by detergent and hypotonic shock

Habitat	found in natural or artificial saline lakes or saline ground water
Lifestyle
Pathogenicity