Glycine cleavage system, H protein; The glycine cleavage system catalyzes the degradation of glycine. The H protein shuttles the methylamine group of glycine from the P protein to the T protein.

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.

Dihydrolipoyl dehydrogenase, E3 component of Pyruvate and 2-oxoglutarate dehydrogenase complexes; Function of homologous gene experimentally demonstrated in an other organism; enzyme.

Bifunctional 5,10 methylene-tetrahydrofolate dehydrogenase/cyclohydrolase; Catalyzes the oxidation of 5,10-methylenetetrahydrofolate to 5,10-methenyltetrahydrofolate and then the hydrolysis of 5,10- methenyltetrahydrofolate to 10-formyltetrahydrofolate.

Methionine synthase; Catalyzes the transfer of a methyl group from methyl- cobalamin to homocysteine, yielding enzyme-bound cob(I)alamin and methionine. Subsequently, remethylates the cofactor using methyltetrahydrofolate.

Formate-tetrahydrofolate ligase; Function of homologous gene experimentally demonstrated in an other organism; enzyme; Belongs to the formate--tetrahydrofolate ligase family.

Putative Formimidoyltransferase-cyclodeaminase; Function proposed based on presence of conserved amino acid motif, structural feature or limited homology; putative enzyme.

Bifunctional purine biosynthesis protein PurH; Function of homologous gene experimentally demonstrated in an other organism; enzyme.

5,10-methylenetetrahydrofolate reductase; Function of homologous gene experimentally demonstrated in an other organism; enzyme; Belongs to the methylenetetrahydrofolate reductase family.