The spelling of the word "chorismate mutase" may appear daunting at first, but with the help of the International Phonetic Alphabet (IPA), it becomes clearer. In IPA, "chorismate" is pronounced /kɔːrɪzmeɪt/ and "mutase" is pronounced /mjuːteɪz/. "Chorismate" is a compound word originating from "chorismic acid" and "mutase" refers to an enzyme that catalyzes the transfer of functional groups from one molecule to another. Put together, "chorismate mutase" refers to an enzyme that catalyzes the conversion of chorismic acid to prephenic acid in the shikimate pathway.
Chorismate mutase is an enzyme that plays a crucial role in the biosynthesis of aromatic amino acids, such as phenylalanine, tyrosine, and tryptophan, in many microorganisms, plants, and some fungi. It is a key enzyme in the shikimate pathway, an essential metabolic pathway responsible for the synthesis of aromatic compounds.
The chorismate mutase enzyme catalyzes the conversion of chorismate, an intermediate molecule in the shikimate pathway, into prephenate. This conversion occurs via an isomerization reaction, where the enzyme rearranges the carbon skeleton of chorismate. This enzymatic reaction is vital as it diverts the precursor chorismate towards the biosynthesis of aromatic amino acids.
Chorismate mutase has been extensively studied due to its pivotal role in the production of aromatic compounds, which, in turn, are necessary for the biosynthesis of secondary metabolites, such as plant hormones, flavonoids, alkaloids, and many more. Therefore, understanding and manipulating the activity of chorismate mutase can have significant implications in various fields, including biotechnology, pharmacology, and agriculture.
The enzyme is typically found as two distinct isoforms, called CM I and CM II, with variations in their catalytic mechanism, molecular structure, and substrate specificity. While CM I is mainly present in bacteria and some fungi, CM II is primarily found in plants. Recent studies have revealed that chorismate mutase can exist in more diverse forms, expanding the understanding of its function and evolutionary history.
Overall, chorismate mutase is a critical enzyme involved in the shikimate pathway, facilitating the production of aromatic amino acids and other essential metabolites. Its diverse isoforms and versatile role offer opportunities
The word "Chorismate Mutase" is derived from two components: "chorismate" and "mutase".
1. Chorismate: The term "chorismate" refers to a compound called chorismic acid. It is an intermediate molecule in the shikimate pathway, which is a metabolic pathway found in plants, bacteria, and fungi. Chorismic acid is a precursor for the synthesis of various aromatic compounds, including amino acids and secondary metabolites.
The term "chorismate" itself is derived from the Greek word "choros", meaning "dance" or "circle", and the suffix "-mate", indicating a compound or derivative. It is called chorismate because the shikimate pathway forms a "cyclic" set of reactions like a dance or circle.
2. Mutase: The suffix "-ase" is used in biology to denote an enzyme.