|Superclasses:||Reactions Classified By Conversion Type → Simple Reactions → Chemical Reactions|
|Reactions Classified By Substrate → Small-Molecule Reactions|
EC Number: 188.8.131.52
The reaction direction shown, that is, A + B ↔ C + D versus C + D ↔ A + B, is in accordance with the Enzyme Commission system.
Mass balance status: Balanced.
Enzyme Commission Primary Name: aspartate kinase
Enzyme Commission Synonyms: aspartokinase, AK, β-aspartokinase, aspartic kinase
Enzyme Commission Summary:
The enzyme from Escherichia coli is a multifunctional protein, which also catalyses the reaction of EC 184.108.40.206 homoserine dehydrogenase. This is also the case for two of the four isoenzymes in Arabidopsis thaliana. The equilibrium constant strongly favours the reaction from right to left, i.e. the non-physiological direction of reaction.
Starnes72: Starnes WL, Munk P, Maul SB, Cunningham GN, Cox DJ, Shive W (1972). "Threonine-sensitive aspartokinase-homoserine dehydrogenase complex, amino acid composition, molecular weight, and subunit composition of the complex." Biochemistry 11(5);677-87. PMID: 4551091
Veron72: Veron M, Falcoz-Kelly F, Cohen GN (1972). "The threonine-sensitive homoserine dehydrogenase and aspartokinase activities of Escherichia coli K12. The two catalytic activities are carried by two independent regions of the polypeptide chain." Eur J Biochem 1972;28(4);520-7. PMID: 4562990
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