Methanoculleus
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  

 

Morphology Methanoculleus
CELLULAR  
Staining Gram negative
Morphology irregular coccir 1-2 um in diameter
Motility non motile
Specialized structures no endospores
Division  
COLONIAL  
Solid surface  
Liquid  

 

Growth Parameters Methanoculleus
PHYSIOLOGICAL  
Tropism ammonia serves as a nitrogen source, sulfide serves as sulfur source
Oxygen Very strictly anaerobic
pH  
Temperature optimum 35-40 oC
Requires optimal NaCl concentration 0.1-0.25 M
Produces H2 + CO2, formate and sometimes secondary alchols + CO2 are catabolic substrates for methane production; acetate or methylamines are not catabolized
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

Suceptible to lysis by detergents and hyptonic shock
ENVIRONMENTAL  
Habitat anaerobic digestors or anoxic lake sediments
Lifestyle  
Pathogenicity  
Distribution  

 

Genome Methanoculleus
G+C Mol %  
   

 

Reference Methanoculleus
First Citation Maestrojuan et al 1990 IJSB 40: 117-122
The Prokaryotes p
Bergey's Determinative p 721
References