title: Cell yields of Escherichia coli during anaerobic growth on fumarate and molecular hydrogen.
abstract: Escherichia coli was grown anaerobically on sodium fumarate and molecular hydrogen or sodium formate in continuous culture. The maximal growth yield and the maintenance coefficient were determined. In a mineral medium a Ymax(fum) value of 6.6 g dry weight per mol fumarate was found. This value increased to 7;5 when casamino acids were present in the medium. From these data and the corresponding Ymax(ATP) values it could be calculated that per mol of fumarate reduced, 0;4 mol of ATP became available for growth. In batch culture a Yfum value of 4.8 g dry weight per mol fumarate was determined.
mesh_terms: D000255:Adenosine Triphosphate / Q000096:biosynthesis; D000693:Anaerobiosis; D004926:Escherichia coli / Q000254:growth & development* / Q000378:metabolism; D005561:Formates / Q000378:metabolism; D005650:Fumarates / Q000378:metabolism*; D006859:Hydrogen / Q000378:metabolism*
chemical_list: D005561:Formates; D005650:Fumarates; D006859:Hydrogen; D000255:Adenosine Triphosphate