apoenzyme


Also found in: Dictionary, Thesaurus, Medical.

apoenzyme

[¦a·pō¦en‚zīm]
(biochemistry)
The protein moiety of an enzyme; determines the specificity of the enzyme reaction.
References in periodicals archive ?
An apoenzyme blank was also included in each assay to correct for endogenous PLP that might be present in the apoenzyme extract.
These include loss of reactivatable apoenzyme during chronic deficiency in vivo (7, 8), altered binding of apoenzyme and coenzyme because of the presence of isoenzymes of transketolase (9), and reduced synthesis of apoenzyme in patients with diabetes (10) and liver disease (11).
The cblE class may involve a reducing component of the MS system (84), whereas cblG is thought to be caused by defective MS apoenzyme (85,86).
Biotin, pyridoxal-phosphate, and riboflavin can be covalently bound to the apoenzymes and are called prosthetic groups.