Tartrate dehydratase alpha subunit/Fumarate hydratase class I, N-terminal domain; Catalyzes the reversible hydration of fumarate to (S)-malate. Belongs to the class-I fumarase family.

[C] COG2086 Electron transfer flavoprotein, beta subunit.

Glycine dehydrogenase; The glycine cleavage system catalyzes the degradation of glycine. The P protein binds the alpha-amino group of glycine through its pyridoxal phosphate cofactor; CO(2) is released and the remaining methylamine moiety is then transferred to the lipoamide cofactor of the H protein; Belongs to the GcvP family.

Reductive dehalogenase; [C] COG1600 Uncharacterized Fe-S protein.

Ferritin and Dps; [P] COG0783 DNA-binding ferritin-like protein (oxidative damage protectant); Belongs to the Dps family.

succinyl-CoA ligase, alpha subunit; Succinyl-CoA synthetase functions in the citric acid cycle (TCA), coupling the hydrolysis of succinyl-CoA to the synthesis of either ATP or GTP and thus represents the only step of substrate-level phosphorylation in the TCA. The alpha subunit of the enzyme binds the substrates coenzyme A and phosphate, while succinate binding and nucleotide specificity is provided by the beta subunit.

[C] COG2025 Electron transfer flavoprotein, alpha subunit.

succinyl-CoA synthetase beta chain; Succinyl-CoA synthetase functions in the citric acid cycle (TCA), coupling the hydrolysis of succinyl-CoA to the synthesis of either ATP or GTP and thus represents the only step of substrate-level phosphorylation in the TCA. The beta subunit provides nucleotide specificity of the enzyme and binds the substrate succinate, while the binding sites for coenzyme A and phosphate are found in the alpha subunit.