... and2Department of Cell Biology, Faculty of Science,University of Nijmegen, the Netherlands The synthesis of formyl-methanofuran and the reduction of the heterodisulfide (CoM-S-S-CoB) of coenzyme ... Methanothermobacter thermautotrophicus. PhD Thesis, Uni-versity of Nijmegen, Nijmegen, the Netherlands.30. Butsch, B.M. & Bachofen, R. (1984) The membrane potential inwhole cells of Methanobacterium ... and of sodium ions (smf in mV) in their energy metabolism (seeintroduction). According to the Mitchell hypothesis, pmf iscomposed of the membrane potential (Dw,mV)andthechemical gradient of...