Protein Family Models

Chorismate mutase EC:5.4.99.5 catalyses the conversion of chorismate to prephenate in the pathway of tyrosine and phenylalanine biosynthesis. This enzyme is negatively regulated by tyrosine, tryptophan and phenylalanine [2,3]. [1]. 7971967. The crystal structure of allosteric chorismate mutase at 2.2-A resolution. Xue Y, Lipscomb WN, Graf R, Schnappauf G, Braus G;. Proc Natl Acad Sci U S A 1994;91:10814-10818. [2]. 9642265. Tyrosine and tryptophan act through the same binding site at the dimer interface of yeast chorismate mutase. Schnappauf G, Krappmann S, Braus GH;. J Biol Chem 1998;273:17012-17017. [3]. 9497350. Chorismate mutase-prephenate dehydratase from Escherichia coli. Study of catalytic and regulatory domains using genetically engineered proteins. Zhang S, Pohnert G, Kongsaeree P, Wilson DB, Clardy J, Ganem B;. J Biol Chem 1998;273:6248-6253. (from Pfam)

Date:

2024-10-16

chorismate mutase catalyzes the interconversion of chorismate to prephenate in the pathway of tyrosine and phenylalanine biosynthesis

Date:

2019-05-16

This model represents a clade of chorismate mutase proteins/domains from gram positive species. The sequence from Enterococcus is fused to the C-terminus of an aparrent acetyltransferase, and the seuence from Clostridium acetobutylicum (but not perfringens) is fused to the N-terminus of shikimate-5-dehydrogenase, another enzyme of the chorismate pathway. All the other members of this clade are mono-functional. Members of this clade from Streptococcus and Lactococcus have been found which represent the sole chorismate mutase domain in their respective genomes which also exhibit evidence of the enzymes of both the upstream and downstream branches of the chorismate pathways.

Date:

2019-09-10