Tentative pathway for methoxydotrophic growth in A. fulgidus. RPKM and log2 fold change values for all proteins shown in this figure are included in Supporting Information Table S1. Genes encoding the following enzymes can be found in A. fulgidus VC‐16: Formylmethanofuran dehydrogenase FwdA‐F (AF_0177, AF_1644, AF_1649‐51, AF_1928‐31), formylmethanofuran‐tetrahydromethanopterin formyl‐transferase Ftr (AF_2073 & AF_2207), methenyl‐tetrahydromethanopterin cyclohydrolase Mch (AF_1935), methylenetetrahydromethanopterin dehydrogenase Mtd (AF_0714), 5,10‐methylenetetrahydromethanopterin reductase Mer (AF_1066 & AF_1196), acetyl‐CoA decarbonylase/synthase CODH/ACS complex CdhABCDE (AF_0376/7/9, AF_1100/1, AF_2397/8), acetyl‐CoA synthetase Acs1‐5 (AF_0197, AF_0366, AF_0677, AF_0975, AF_0976) and acetate‐CoA ligase Acl (AF_1211 & AF_1938), pyruvate ferredoxin oxidoreductase PorABDG (AF_1699–1702), pyruvate formate lyase PflCD (AF_1449/50), PflX (AF_1961) and Act‐1‐4 (AF_0117, AF_0918, AF_1330, AF_2278), D‐lactate dehydrogenase Dld (AF_0394 & AF_0808), L‐lactate dehydrogenase LldD (AF_0807) and LldEFG (AF_0809‐AF_0811), lactate permease lctP (AF_0806), pyruvate carboxylase PycA (AF_0220) and oxaloacetate decarboxylase Oad (AF_1252), malate dehydrogenase MdhA (AF_0855) and malate oxidoreductase Mae (AF_1727), fumarate hydratase Fum‐1/2 (AF_1098/9), succinate dehydrogenase SdhA‐D (AF_0681‐4), succinyl‐CoA synthetase SucCD (AF_1539/40 & AF_2185/6), 2‐oxoglutarate/2‐oxoacid ferredoxin oxidoreductase KorABDG (AF_0468‐71), glutamate synthase GltB1‐3 (AF_0952‐4), aspartate aminotransferase AspBC (AF_0409, AF_1623, AF_2129, AF_2366, AF_1417), isocitrate dehydrogenase Icd (AF_0647), aconitase Acn (AF_1963), citrate synthase CitZ (AF_1340), sulfate adenylyltransferase Sat (AF_1667), adenylylsulfate reductase AprAB (AF_1669‐70), dissimilatory sulfite reductase DsrAB (AF_0423‐4), DsrC (AF_2228), quinone‐modifying oxidoreductase QmoABC (AF_0661‐3), molybdopterin oxidoreductase DsrMKJOP (AF_0499‐503), DsrMK(K) (AF_0543‐5), F420H2:quinone oxidoreductase FqoJKMLNABCDHIF (AF_1823‐33), soluble heterodisulfide reductase HdrABC (AF_1375‐7), F420‐non‐reducing hydrogenase VhuADG (AF_1372‐4), F420‐nonreducing hydrogenase VhtACDG (AF_1378‐81), ATP synthase AtpA‐K (AF_1158‐68), cobalamin binding protein MtoC (AF_0006) and its activator MtoD (AF_0010), O‐demethylase MtoB (AF_0007) and methyl transferase MtoA (AF_0009), MFS transporters (AF_0008 & AF_0013). H4MPT: tetrahydromethanopterin, MQH2: reduced menaquinone (MQ), MFR: methanofuran, Fd: ferredoxin, F420H2: reduced coenzyme F420, MFS: major facilitator superfamily transporter. Expression ratio shown for A. fulgidus grown on MP versus lactate. [Color figure can be viewed at wileyonlinelibrary.com]