title: Pathways of carbohydrate metabolism in Microcyclus species.
abstract: Radiorespirometric and enzymatic studies were conducted to determine primary and secondary pathways of carbohydrate catabolism in Microcyclus aquaticus and M. flavus. M. aquaticus catabolizes both glucose and gluconate mainly via the Entner-Doudoroff and pentose phosphate pathways with some concurrent participation of the Embden-Meyerhof pathway. M. flavus, however, oxidizes glucose mainly via the Embden-Meyerhof pathway and gluconate via the Entner-Doudoroff pathway with some simultaneous operation of the pentose phosphate pathway. Both of the organisms showed evidence of the tricarboxylic acid cycle as a secondary pathway for the oxidation of carbohydrates.
mesh_terms: D000085:Acetates / Q000378:metabolism; D000410:Alanine Transaminase / Q000378:metabolism; D001219:Aspartate Aminotransferases / Q000378:metabolism; D001419:Bacteria / Q000201:enzymology / Q000378:metabolism*; D002245:Carbon Dioxide / Q000096:biosynthesis; D002247:Carbon Isotopes; D002952:Citric Acid Cycle; D005618:Fresh Water; D005634:Fructose-Bisphosphate Aldolase / Q000378:metabolism; D005942:Gluconates / Q000378:metabolism*; D005947:Glucose / Q000378:metabolism*; D005954:Glucosephosphate Dehydrogenase / Q000378:metabolism; D005971:Glutamates / Q000378:metabolism; D006836:Hydro-Lyases / Q000378:metabolism; D007521:Isocitrate Dehydrogenase / Q000378:metabolism; D008291:Malate Dehydrogenase / Q000378:metabolism; D010084:Oxidation-Reduction; D010734:Phosphogluconate Dehydrogenase / Q000378:metabolism; D011773:Pyruvates / Q000378:metabolism; D013045:Species Specificity; D013053:Spectrophotometry; D013237:Stereoisomerism; D014174:Transketolase / Q000378:metabolism; D014871:Water Microbiology
chemical_list: D000085:Acetates; D002247:Carbon Isotopes; D005942:Gluconates; D005971:Glutamates; D011773:Pyruvates; D002245:Carbon Dioxide; D008291:Malate Dehydrogenase; D007521:Isocitrate Dehydrogenase; D010734:Phosphogluconate Dehydrogenase; D005954:Glucosephosphate Dehydrogenase; D014174:Transketolase; D001219:Aspartate Aminotransferases; D000410:Alanine Transaminase; D005634:Fructose-Bisphosphate Aldolase; D006836:Hydro-Lyases; D005947:Glucose