Methanogens ATPases

Muller, V., Ruppert, C., and Lemker, T. (1999). Structure and function of the AjAo-ATPases from methanogenic Archaea./ Bioenerg. Biomembr. 31, 15-27. 

The best evidence for the existence of an F-type ATPase in the archaea comes from experiments with a methylotropic methanogen [52], Membranes contain particles that react with polyclonal antiserum against the 3 subunit of the Escherichia coli F-ATPase. In addition, negative staining reveals particles attached to the membranes with a stalk whose appearance is suggestive of an F-type ATPase [53]. Unfortunately, no further studies have... 

Furthermore, the formation of ATP coupled to methane production by the metha-nogens is inhibited in the presence of ionophores (Blaut and Gottschalk, 1985). Indeed, an ATPase which seems to function as ATP synthase has been known to occur in the methanogens (Inatomi, 1986 Mayer et al., 1987). Thus, the formation of methane by the methanogens is a respiration but not fermentation it is now called carbon dioxide respiration (or carbonic respiration) (Wolfe, 1980 Daniels et al., 1984). 

Mayer F, Jussofie A, Salzmann M, Ltibben M, Rhode M, Gottschalk G (1987) Immunoelectron microscopic demonstration of ATPase on the cytoplasmic membrane of the methanogenic bacterium strain Go 1. J Bacteriol 169 2307-2309 Maymo-Gatell X, Chien Y-T, Gossett JM, Zinder SH (1997) Isolation of a bacterium that reduc-tively dehalogenate tetrachloroethene to ethene. Science 276 1568-1571... 

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