Polyketide synthase Pks12; Rv2048c, (MTV018.35c), len: 4151 aa. Pks12,polyketide synthase similar to many. Contains 2x PS00012 Phosphopantetheine attachment site, 2x PS00606 Beta-ketoacyl synthases active site, and PS00343 Gram-positive cocci surface proteins 'anchoring' hexapeptide. Nucleotide position 2297976 in the genome sequence has been corrected, G:A resulting in S3004L.

Phenolpthiocerol synthesis type-I polyketide synthase PpsC; Involved in the elongation of either C22-24 fatty acids by the addition of malonyl-CoA and methylmalonyl-CoA extender units to yield phthiocerol derivatives.

Rv2940c, (MTCY24G1.09, MTCY19H9.08c), len: 2111 aa. Probable mas, mycocerosic acid synthase membrane associated, multifunctional enzyme (see citations below),almost identical to Q02251|MCAS_MYCBO|mas mycocerosic acid synthase from Mycobacterium bovis (2110 aa), FASTA scores: opt: 13226, E(): 0, (95.8% identity in 2115 aa overlap) (see Mathur & Kolattukudy 1992); and equivalent to Q9CD78|mas|ML0139 putative mycocerosic synthase from Mycobacterium leprae (2116 aa), FASTA scores: opt: 12142,E(): 0, (87.95% identity in 2119 aa overlap); and Q49624|PKS3|MASA|ML1229|B1170_C2_209 probable myc [...]

Polyketide synthase Pks2; Catalyzes the synthesis of the hepta- and octamethyl phthioceranic acids and/or hydroxyphthioceranic acids that are the major acyl constituents of sulfolipids.

Probable ubiquinol-cytochrome C reductase QcrB (cytochrome B subunit); Cytochrome b subunit of the cytochrome bc1 complex, an essential component of the respiratory electron transport chain required for ATP synthesis. The bc1 complex catalyzes the oxidation of ubiquinol and the reduction of cytochrome c in the respiratory chain. The bc1 complex operates through a Q-cycle mechanism that couples electron transfer to generation of the proton gradient that drives ATP synthesis. The cytochrome b subunit contains two ubiquinol reactive sites: the oxidation (QP) site and the reduction (QN) site.

Rv1663, (MTCY275.02), len: 502 aa. Probable pks17,polyketide synthase, similar to other polyketide synthases e g. ERY2_SACER|Q03132 erythronolide synthase, modules 3 and 4 (3567 aa) from Saccharopolyspora erythraea (Streptomyces erythraeus), FASTA scores: opt: 1207, E(): 0,(43.9% identity in 531 aa overlap). Also similar to other Mycobacterium tuberculosis probable polyketide synthases e.g. pks7 and pks1. Note that the similarity extends into the upstream ORF Rv1662 (MTCY275.01) and this could be accounted for by a frameshift, although the sequence has been checked and no discrepancy w [...]

Putative initiation inhibitor protein; May play a role in septum formation.

Possible segregation and condensation protein ScpB; Participates in chromosomal partition during cell division. May act via the formation of a condensin-like complex containing Smc and ScpA that pull DNA away from mid-cell into both cell halves.

Rv0153c, (MTCI5.27c), len: 276 aa. PtbB (alternate gene name: MPtpB), protein-tyrosine-phosphatase (see citation below), showing some similarity to several protein-tyrosine phosphatases, polyketide synthase and aminotransferase e.g. Q05918|IPHP_NOSCO|IPH protein-tyrosine-phosphatase precursor from Nostoc commune (294 aa), FASTA scores: opt: 150, E(): 0.0096, (26.8% identity in 269 aa overlap); etc. Supposedly a secreted protein. Potent and selective inhibitor is an isoxazole compound (See Seollner et al., 2007).