Rv1322A, len: 152 aa. Conserved protein, similar to proteins from Mycobacterium leprae and Streptomyces coelicolor e.g. AL583921_2|ML1157 from M. leprae strain tn (155 aa), FASTA scores: opt: 771, E(): 5.1e-43, (75.3% identity in 154 aa overlap); and AL137242_2 from Streptomyces coelicolor (146 aa), FASTA scores: opt: 404,E(): 2e-19, (43.165% identity in 139 aa overlap).

Possible transport system kinase; Probable GTPase. May also bind and hydrolyze ATP. May function as chaperone (Probable); Belongs to the SIMIBI class G3E GTPase family. ArgK/MeaB subfamily.

Probable oxidoreductase (alpha subunit); Component of KG oxidoreductase (KOR) that catalyzes the CoA- dependent oxidative decarboxylation of 2-oxoglutarate (alpha- ketoglutarate, KG) to succinyl-CoA. Methyl viologen can act as electron acceptor in vitro; the physiologic electron acceptor is unknown. Is involved in the alternative TCA pathway that functions concurrently with fatty acid beta-oxidation. Since a growing body of evidence indicates that lipids (for example cholesterol and fatty acids) are a predominant growth substrate for M.tuberculosis during infection, flux through KOR li [...]

Probable succinyl-CoA synthetase (alpha chain) SucD (SCS-alpha); 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.

Probable succinyl-CoA synthetase (beta chain) SucC (SCS-beta); 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.

Probable malate dehydrogenase Mdh; Catalyzes the reversible oxidation of malate to oxaloacetate. Belongs to the LDH/MDH superfamily. MDH type 2 family.

Probable pyruvate carboxylase Pca (pyruvic carboxylase); Catalyzes a 2-step reaction, involving the ATP-dependent carboxylation of the covalently attached biotin in the first step and the transfer of the carboxyl group to pyruvate in the second.

Rv1489A, len: 76 aa. Conserved protein, similar to part of alpha subunit of many methylmalonyl-CoA mutases (~750 aa). Size difference suggests possible gene fragment although Mycobacterium tuberculosis has intact methylmalonyl-CoA mutase gene. P71774|MUTB_MYCTU probable methylmalonyl-CoA mutase from Mycobacterium tuberculosis (750 aa), FASTA scores: opt: 258, E(): 3.2e-10, (73.35% identity in 60 aa overlap). ORF predicted by GC plot.

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 (By similarity); Belongs to the vitamin-B12 dependent methionine synthase family.