경주출장업소 Methane metabolism - Reference pathway 포천오피걸
[ 대구출장마사지 | 남원출장안마추천 | 익산출장연애인급 | 전주오피걸 | 안동출장여대생 ]
Methane is metabolized principally by methanotrophs and methanogens in the global carbon cycle. Methanotrophs consume methane as the only source of carbon, while methanogens produce methane as a metabolic byproduct. Methylotrophs, which are microorganisms that can obtain energy for growth by oxidizing one-carbon compounds, such as methanol and methane, are situated between methanotrophs and methanogens. Methanogens can obtain energy for growth by converting a limited number of substrates to methane under anaerobic conditions. Three types of methanogenic pathways are known: CO2 to methane [MD: 속초출장안마 ], methanol to methane [MD: 양주출장샵 ], and acetate to methane [MD: 이천출장아가씨 ]. Methanogens use 2-mercaptoethanesulfonate (CoM; coenzyme M) as the terminal methyl carrier in methanogenesis and have four enzymes for CoM biosynthesis [MD: 용인출장마사지 ]. Coenzyme B-Coenzyme M heterodisulfide reductase (Hdr), requiring for the final reaction steps of methanogenic pathway, is divided into two types: cytoplasmic HdrABC in most methanogens and membrane-bound HdrED in Methanosarcina species. In methanotrophs and methyltrophs methane is oxidized to form formaldehyde, which is at the diverging point for further oxidation to CO2 for energy source and assimilation for biosynthesis. There are three pathways that convert formaldehyde to C2 or C3 compounds: serine pathway [MD: 안양출장마사지 ], ribulose monophosphate pathway [MD: 삼척출장샵 ], and xylulose monophosphate pathway [MD: 김포출장업소 ]. The first two pathways are found in prokaryotes and the third is found in yeast. As a special case of methylotrophs, various amines can be used as carbon sources in trimethylamine metabolism [MD: 모텔출장 ].
jnice12-ipp05-wc-zc-0357