Probable cytochrome P450 monooxygenase 142 Cyp142; Involved in the utilization of cholesterol as the sole carbon and energy source by degrading the side chain during infection. Primarily catalyzes the sequential oxidation of the terminal methyl of cholest-4-en-3-one into (25R)-26-hydroxycholest-4- en-3-one (alcohol), (25R)-26-oxocholest-4-en-3-one (aldehyde), to finally yield the carboxylic acid (25R)-3-oxocholest-4-en-26-oate. In vitro, Cyp142 catalyzes with equal preference the oxidation of both (25R)- and (25S)-26- hydroxycholest-4-en-3-one diastereomers to the corresponding carboxy [...]

Probable cytochrome P450 125 Cyp125; Involved in the utilization of cholesterol as the sole carbon and energy source by degrading the side chain during infection. Primarily catalyzes the sequential oxidation of the terminal methyl of cholest-4-en-3-one into (25S)-26- hydroxycholest-4-en-3-one (alcohol), (25S)-26-oxocholest-4-en-3-one (aldehyde), to finally yield the carboxylic acid (25S)-3-oxocholest-4- en-26-oate. Also able to sequentially oxidize cholesterol itself, not only cholest-4-en- 3-one. Belongs to the cytochrome P450 family.

Inosine-5'-monophosphate dehydrogenase; Catalyzes the conversion of inosine 5'-phosphate (IMP) to xanthosine 5'-phosphate (XMP), the first committed and rate-limiting step in the de novo synthesis of guanine nucleotides, and therefore plays an important role in the regulation of cell growth. Does not catalyze the reverse reaction, i.e. the conversion of XMP to IMP. Appears to be essential for the optimal growth of M.tuberculosis. Belongs to the IMPDH/GMPR family.

Probable ubiquinol-cytochrome C reductase QcrC (cytochrome C 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.

Conserved hypothetical protein; Required for the sulfation of S881. S881 is a sulfated menaquinone, which is localized in the outer envelope of M.tuberculosis and negatively regulates its virulence. 3'-phosphoadenosine-5'- phosphosulfate (PAPS) is the sulfate donor. Belongs to the Stf3 family.

Rv1691, MTCI125.13, len: 250 aa. Conserved hypothetical protein, similar to Q9S210|SCI51.30C|AL109848 Hypothetical protein from Streptomyces coelicolor (210 aa),FASTA score: opt: 556, E(): 6.4e-27, (50.6% identity in 180 aa overlap).

Rv3529c, (MTCY03C7.27), len: 384 aa. Conserved hypothetical protein, showing some similarity to Q50695|YM67_MYCTU|Rv2267c|MT2329|MTCY339.43 hypothetical 46.1 KDA protein from Mycobacterium tuberculosis (388 aa) FASTA scores: opt: 261, E(): 1.6e-09, (27.25% identity in 253 aa overlap).

PE-PGRS family protein PE_PGRS12; Rv0832, (MTV043.24), len: 137 aa. PE_PGRS12, Member of the Mycobacterium tuberculosis PE family, possibly PGRS subfamily of gly-rich proteins (see citation below), highly similar to many others e.g. MTCY1A11.25c|Z78020 (498 aa),FASTA scores: opt: 529, E(): 5.2e-22, (61.8% identity in 136 aa overlap); etc. Appears to have incurred frameshift as next ORF should be continuation; sequence has been checked but no error found.

Rv2328, (MTCY3G12.06), len: 382 aa. PE23, Member of the Mycobacterium tuberculosis PE family (see citation below), similar to others e.g. Q9L8K5|MAG24-1 PE-PGRS homolog from Mycobacterium marinum (638 aa), FASTA scores: opt: 495, E(): 6.6e-18, (34.65% identity in 401 aa overlap); etc.