isomerase

Thân thiện

The enzyme isomerase converts glucose into fructose.

Definition

Noun: An enzyme that catalyzes the conversion of a molecule into one of its isomers. In biochemistry, this refers to a class of enzymes that facilitate intramolecular rearrangements, changing the structure of a substrate molecule into an isomeric form without adding or removing atoms.

Usage

The word "isomerase" is used specifically in biochemical and biological contexts to name enzymes that perform isomerization reactions. It is typically part of a compound name that specifies the substrate, such as "phosphoglucose isomerase."

Examples

• The enzyme isomerase is crucial in the metabolic pathway known as glycolysis.
• Triosephosphate isomerase catalyzes the interconversion of dihydroxyacetone phosphate and glyceraldehyde 3-phosphate.
• A deficiency in a specific isomerase can lead to metabolic disorders.

Advanced Usage

• "Isomerase activity": Refers to the catalytic function of converting one isomer to another.
  • The research paper measured the isomerase activity in the mutant strain.
• In systematic enzyme nomenclature (EC numbers), isomerases belong to class EC 5.

Variants and Related Words

• Isomer (noun): One of two or more compounds with the same molecular formula but a different arrangement of atoms.
• Isomerization (noun): The process by which one molecule is transformed into another molecule with the same atoms but a different structure, often catalyzed by an isomerase.
• Racemase (noun): A specific type of isomerase that catalyzes the inversion of stereochemistry around a chiral center (e.g., converting an L-amino acid to a D-amino acid).

Synonyms

• There are no direct one-word synonyms for this highly specific scientific term. Descriptive phrases include "isomerizing enzyme" or "enzyme catalyzing isomerization."

Related Phrases

• Prolyl isomerase: An enzyme that catalyzes the cis-trans isomerization of proline peptide bonds, important for protein folding.
• Topoisomerase: A related but distinct class of enzymes that alter the topological state of DNA (e.g., by relieving supercoiling), sometimes classified under isomerases (EC 5.99.1.2).

Học thuật

Noun

1. an enzyme that catalyzes its substrate to an isomeric form