Deviation from Michaelis-Menten kinetics for fumarase.
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ABSTRACT: A study of the steady-state kinetics of fumarase over an extended concentration range, using novel methods of analysis, reveals an initial-rate equation of at least fourth degree for malate as substrate at pH 7.0, with no kinetically significant dead-end complex formation even up to concentrations of 100 mM. In the absence of demonstrable enzyme-aggregation phenomena, this is interpreted as indicating co-operative effects overlooked previously, although a mixture of isoenzymes, each individually of high degree and giving a complex curve, may be a contributing factor.
SUBMITTER: Crabbe MJ
PROVIDER: S-EPMC1163858 | biostudies-other | 1976 Aug
REPOSITORIES: biostudies-other
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