Family

Chorismate mutase, AroQ class, eukaryotic type (IPR008238)

Short name: Chorismate_mutase_AroQ_euk

Family relationships

None.

Description

Chorismate mutase (CM; EC:5.4.99.5) catalyses the reaction at the branch point of the biosynthetic pathway leading to the three aromatic amino acids, phenylalanine, tryptophan and tyrosine (chorismic acid is the last common intermediate, and CM leads to the L-phenylalanine/L-tyrosine branch). It is part of the shikimate pathway, which is present only in bacteria, fungi and plants. Members of this family, which are restricted to plants and fungi, contain a chorismate mutase domain of the AroQ class (eukaryotic type) and have an all-helical structure. The monomer consists of a catalytic and a regulatory domain covalently linked by a loop, which functions as a molecular hinge. They are monofunctional, allosteric enzymes and are subject to allosteric inhibition by tyrosine and activation by tryptophan.

The three types of CM are AroQ class, prokaryotic type; AroQ class, eukaryotic type; and AroH class. They fall into two structural folds (AroQ class and AroH class) which are completely unrelated [PMID: 11528003]. The two types of the AroQ structural class (the Escherichia coli CM dimer and the yeast CM monomer) can be structurally superimposed, and the topology of the four-helix bundle forming the active site is conserved [PMID: 11528003].

For additional information please see [PMID: 9626703, PMID: 10564818, PMID: 9384560, PMID: 11997452, PMID: 11481470, PMID: 11450855, PMID: 7971967, PMID: 9383421].

GO terms

Biological Process

GO:0009073 aromatic amino acid family biosynthetic process

Molecular Function

GO:0004106 chorismate mutase activity

Cellular Component

No terms assigned in this category.

Contributing signatures

Signatures from InterPro member databases are used to construct an entry.
PIRSF
TIGRFAMs
PROSITE profiles
GENE3D
PANTHER