Aconitate hydratase; Identified by similarity to SP:P36683; match to protein family HMM PF00330; match to protein family HMM PF06434; match to protein family HMM TIGR00117; Belongs to the aconitase/IPM isomerase family.

acetyl-CoA synthase; Catalyzes the conversion of acetate into acetyl-CoA (AcCoA), an essential intermediate at the junction of anabolic and catabolic pathways. AcsA undergoes a two-step reaction. In the first half reaction, AcsA combines acetate with ATP to form acetyl-adenylate (AcAMP) intermediate. In the second half reaction, it can then transfer the acetyl group from AcAMP to the sulfhydryl group of CoA, forming the product AcCoA; Belongs to the ATP-dependent AMP-binding enzyme family.

Pyruvate dehydrogenase complex, E2 component, dihydrolipoamide acetyltransferase; The pyruvate dehydrogenase complex catalyzes the overall conversion of pyruvate to acetyl-CoA and CO(2).

Pyruvate ferredoxin/flavodoxin oxidoreductase family protein; Identified by similarity to SP:P52647; match to protein family HMM PF00037; match to protein family HMM PF01558; match to protein family HMM PF01855; match to protein family HMM PF02775; match to protein family HMM TIGR02176.

Succinate-semialdehyde dehydrogenase (NADP+); Identified by similarity to SP:P25526; match to protein family HMM PF00171; match to protein family HMM TIGR01780; Belongs to the aldehyde dehydrogenase family.

Fumarate hydratase; Involved in the TCA cycle. Catalyzes the stereospecific interconversion of fumarate to L-malate; Belongs to the class-II fumarase/aspartase family. Fumarase subfamily.

NADH dehydrogenase I, C/D subunits; NDH-1 shuttles electrons from NADH, via FMN and iron-sulfur (Fe-S) centers, to quinones in the respiratory chain. The immediate electron acceptor for the enzyme in this species is believed to be ubiquinone. Couples the redox reaction to proton translocation (for every two electrons transferred, four hydrogen ions are translocated across the cytoplasmic membrane), and thus conserves the redox energy in a proton gradient; In the N-terminal section; belongs to the complex I 30 kDa subunit family.

Succinate dehydrogenase, iron-sulfur protein; Identified by similarity to SP:Q59662; match to protein family HMM PF00111; match to protein family HMM TIGR00384; Belongs to the succinate dehydrogenase/fumarate reductase iron-sulfur protein family.

succinyl-CoA synthase, beta 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 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.