1. Different forms of the same enzyme that catalyze the same chemical reaction but differ in their amino acid sequence and physical properties.
Usage: Also called isozymes.; Primarily used in biochemistry and medical contexts.; Plural form; singular is isoenzyme.

Examples

• Lactate dehydrogenase exists as multiple isoenzymes in different tissues.
• The presence of specific isoenzymes in the blood can indicate which organ has been damaged.
• Researchers used electrophoresis to separate and identify different isoenzymes.
• Isoenzymes of creatine kinase are important markers in cardiac diagnosis.
• Different isoenzymes may have different optimal pH and temperature conditions.