title: Anaerobic energy-yielding reaction associated with transhydrogenation from glycerol 3-phosphate to fumarate by an Escherichia coli system.
abstract: A particulate subcellular fraction from Escherichia coli K-12 induced in anaerobic sn-glycerol 3-phosphate (G3P) dehydrogenase and fumarate reductase can catalyze under anaerobic conditions the transfer of hydrogens from G3P to fumarate, with attendant generation of high-energy phosphate. The phsophorylation process is more sensitive than the transhydrogenation process to inhibition by the detergent Triton X-100. The same is true with respect to sensitivity to sodium azide, carbonyl cyanide m-chlorophenylhydrazone and N,N'-dicyclohexylcarbodiimide. Such a preparation derived from cells with beta-galactoside permease can accumulate thiomethyl beta-D-galactoside anaerobically, and the accumulation can be stimulated twofold by adding G3P and fumarate. Mutants lacking the membrane-associated Mg2+-dependent adenosine triphosphatase cannot grow anaerobically on glycerol with fumarate as the hydrogen acceptor, although they can grow aerobically on glycerol alone.
mesh_terms: D000251:Adenosine Triphosphatases / Q000378:metabolism; D000693:Anaerobiosis; D001386:Azides / Q000494:pharmacology; D002258:Carbonyl Cyanide m-Chlorophenyl Hydrazone / Q000494:pharmacology; D002462:Cell Membrane / Q000378:metabolism; D004024:Dicyclohexylcarbodiimide / Q000494:pharmacology; D004099:Dihydroxyacetone Phosphate / Q000378:metabolism; D004734:Energy Metabolism; D004926:Escherichia coli / Q000201:enzymology / Q000378:metabolism*; D005650:Fumarates / Q000378:metabolism*; D005697:Galactosides; D005990:Glycerol / Q000378:metabolism; D005993:Glycerolphosphate Dehydrogenase / Q000378:metabolism; D005994:Glycerophosphates / Q000378:metabolism*; D006600:Hexosephosphates / Q000378:metabolism; D026901:Membrane Transport Proteins / Q000378:metabolism; D008954:Models, Biological; D009154:Mutation; D011092:Polyethylene Glycols / Q000494:pharmacology; D013347:Subcellular Fractions / Q000378:metabolism; D013385:Succinate Dehydrogenase / Q000378:metabolism; D013386:Succinates / Q000378:metabolism
chemical_list: D001386:Azides; D005650:Fumarates; D005697:Galactosides; D005994:Glycerophosphates; D006600:Hexosephosphates; D026901:Membrane Transport Proteins; D013386:Succinates; D011092:Polyethylene Glycols; D004024:Dicyclohexylcarbodiimide; D002258:Carbonyl Cyanide m-Chlorophenyl Hydrazone; D004099:Dihydroxyacetone Phosphate; D005993:Glycerolphosphate Dehydrogenase; D013385:Succinate Dehydrogenase; D000251:Adenosine Triphosphatases; D005990:Glycerol