Serine hydroxymethyltransferase; Catalyzes the reversible interconversion of serine and glycine with tetrahydrofolate (THF) serving as the one-carbon carrier. This reaction serves as the major source of one-carbon groups required for the biosynthesis of purines, thymidylate, methionine, and other important biomolecules. Also exhibits THF-independent aldolase activity toward beta-hydroxyamino acids, producing glycine and aldehydes, via a retro-aldol mechanism.

Serine hydroxymethyltransferase; Catalyzes the reversible interconversion of serine and glycine with tetrahydrofolate (THF) serving as the one-carbon carrier. This reaction serves as the major source of one-carbon groups required for the biosynthesis of purines, thymidylate, methionine, and other important biomolecules. Also exhibits THF-independent aldolase activity toward beta-hydroxyamino acids, producing glycine and aldehydes, via a retro-aldol mechanism.

Serine hydroxymethyltransferase; Catalyzes the reaction of glycine with 5,10-methylenetetrahydrofolate to form L-serine and tetrahydrofolate; Derived by automated computational analysis using gene prediction method: Protein Homology.

Imidazole glycerol phosphate synthase subunit HisH; IGPS catalyzes the conversion of PRFAR and glutamine to IGP, AICAR and glutamate. The HisH subunit catalyzes the hydrolysis of glutamine to glutamate and ammonia as part of the synthesis of IGP and AICAR. The resulting ammonia molecule is channeled to the active site of HisF.

Imidazole glycerol phosphate synthase cyclase subunit; IGPS catalyzes the conversion of PRFAR and glutamine to IGP, AICAR and glutamate. The HisF subunit catalyzes the cyclization activity that produces IGP and AICAR from PRFAR using the ammonia provided by the HisH subunit.

Glucose-1-phosphate adenylyltransferase; Derived by automated computational analysis using gene prediction method: Protein Homology.

Anthranilate synthase; Catalyzes the hydrolysis of the adenine ring of phosphoribosyl-AMP.

Imidazoleglycerol-phosphate dehydratase; Derived by automated computational analysis using gene prediction method: Protein Homology.

1-(5-phosphoribosyl)-5-((5- phosphoribosylamino)methylideneamino)imidazole-4- carboxamide isomerase; Catalyzes the formation of 5-(5-phospho-1-deoxyribulos-1-ylamino)methylideneamino-l- (5-phosphoribosyl)imidazole-4-carboxamide from 1-(5-phosphoribosyl)-5-[(5- phosphoribosylamino)methylideneamino] imidazole-4-carboxamide and the formation of 1-(2-carboxyphenylamino)-1-deoxy-D-ribulose 5-phosphate from N-(5-phospho-beta-D-ribosyl)anthranilate; involved in histidine and tryptophan biosynthesis; Derived by automated computational analysis using gene prediction method: Protein Homology.