Methanococcoides burtonii DSM 6242

Methanococcoides_burtonii
Names Methanococcoides burtonii DSM 6242
Accession numbers NC_007955
Background The eurypsychrophilic (psychrotolerant) Methanococcoides burtonii (strain DSM 6242) is a strictly anaerobic, slightly halophilic archeon that was isolated from the anoxic and methanesaturated hypolimnion of Ace Lake (Antarctica). It is the best-characterized psychrophilic and methylotrophic archaeon. Motility is via a single monotrichous flagellum. Growth occurs at a temperature between 1.7-29.5oC with optimal growth at 23.4oC. In addition this organism requires 0.1-0.5 M NaCl and either magnesium sulfate or magnesium chloride at a concentration greater than 0.01 M for growth. The genome sequence of the methanogen M. burtonii will enable researchers to identify genes that are required for survival and adaptation of these archaea at cold temperature. Proteins from psychrophiles have more non-charged polar amino acids (Gln and Thr) and less hydrophobic amino acids (Leu). Structural flexibility might be due to fewer salt bridges and fewer Pro residues in loops. (HAMAP: METBU)
Taxonomy
Kingdom:Archaea
Phylum:Euryarchaeota
Class:Methanomicrobia
Order:Methanosarcinales
Family:Methanosarcinaceae
Genus:Methanococcoides
Species:burtonii
Strain DSM 6242
Complete Yes
Sequencing centre (11-APR-2006) National Center for Biotechnology Information, NIH, Bethesda, MD 20894, USA
(20-MAR-2006) US DOE Joint Genome Institute, 2800 Mitchell Drive B100, Walnut Creek, CA 94598-1698, USA
Sequencing quality Level 6: Finished
Sequencing depth NA
Sequencing method Sanger
Isolation site Anoxic hypolimnion of Ace Lake Antarctica
Isolation country Antarctica
Number of replicons 1
Gram staining properties NA
Shape Cocci
Mobility No
Flagellar presence Yes
Number of membranes 1
Oxygen requirements Anaerobic
Optimal temperature 23.4
Temperature range Mesophilic
Habitat Aquatic
Biotic relationship Free living
Host name NA
Cell arrangement NA
Sporulation Nonsporulating
Metabolism Methanogen
Energy source Lithotroph
Diseases NA
Pathogenicity No