This family of domains generally have a regulatory role. ACT domains are linked to a wide range of metabolic enzymes that are regulated by amino acid concentration. Pairs of ACT domains bind specifically to a particular amino acid leading to regulati ...
This family of domains generally have a regulatory role. ACT domains are linked to a wide range of metabolic enzymes that are regulated by amino acid concentration. Pairs of ACT domains bind specifically to a particular amino acid leading to regulation of the linked enzyme. The ACT domain is found in: D-3-phosphoglycerate dehydrogenase EC:1.1.1.95 Swiss:P08328, which is inhibited by serine [1]. Aspartokinase EC:2.7.2.4 Swiss:P53553, which is regulated by lysine. Acetolactate synthase small regulatory subunit Swiss:P00894, which is inhibited by valine. Phenylalanine-4-hydroxylase EC:1.14.16.1 Swiss:P00439, which is regulated by phenylalanine. Prephenate dehydrogenase EC:4.2.1.51 Swiss:P21203. formyltetrahydrofolate deformylase EC:3.5.1.10, Swiss:P37051, which is activated by methionine and inhibited by glycine. GTP pyrophosphokinase EC:2.7.6.5 Swiss:P11585
Prephenate dehydratase (EC:4.2.1.51, PDT) catalyses the decarboxylation of prephenate to phenylpyruvate. In microorganisms it is part of the terminal pathway of phenylalanine biosynthesis. In some bacteria, e.g. E. coli PDT is part of the multi-functional P-protein that also catalyses the transformation of chorismate into prephenate (chorismate mutase), while in other bacteria it is a monofunctional enzyme.
Defined by 2 residues: THR:A-174 [auth A-171]PHE:A-176 [auth A-173]