Question

A given substrate may be acted upon by a number of different enzymes, each of which uses the same substrate (s) and produces the same product (s). The individual members of a set of enzymes sharing such characteristics are known as-

(a) Group specific enzymes

(b) Isoenzymes

(c) Allosteric enzymes

(d) Substrate specific enzymes

I had been asked this question in my homework.

I want to ask this question from Determining Enzyme Kinetic Constants from Batch Data topic in section Homogenous Reactions of Bioprocess Engineering

Answer 1

The correct choice is (b) Isoenzymes

To explain I would say: Isozymes (also known as isoenzymes or more generally as multiple forms of enzymes) are enzymes that differ in amino acid sequence but catalyze the same chemical reaction. These enzymes usually display different kinetic parameters (e.g. different KM values), or different regulatory properties. Allozymes represent enzymes from different alleles of the same gene, and isozymes represent enzymes from different genes that process or catalyse the same reaction, the two words are usually used interchangeably.