Rv0448c, (MTV037.12c), len: 221 aa. Conserved hypothetical protein, similar to other hypothetical proteins e.g. Z74841|BOD5A2_1 from B. oleracea (283 aa),FASTA scores: opt: 257, E(): 1.4e-10, (32.0% identity in 197 aa overlap); etc. Some similarity to U15183|MLU15183_38 from Mycobacterium leprae (82 aa), FASTA scores: opt: 134,E(): 0.014, (71.0% identity in 31 aa overlap).

Tuberculostearic acid methyltransferase UfaA1; Involved in the biosynthesis of the tuberculostearic acid (10-methylstearic-acid or TSA), a constituent lipid of the mycobacterial cell wall. Catalyzes the transfer of the methyl group from S-adenosyl-L-methionine (SAM) to the double bond of oleic acid in phosphatidylethanolamine or phosphatidylcholine to produce TSA. Belongs to the CFA/CMAS family.

Alternative RNA polymerase sigma factor SigK; Sigma factors are initiation factors that promote the attachment of RNA polymerase to specific initiation sites and are then released. Extracytoplasmic function (ECF) sigma factors are held in an inactive form by an anti-sigma factor until released by regulated intramembrane proteolysis. Sigma-K controls genes such as mpt70 and mpt83.

Rv3355c, (MTV004.12c), len: 97 aa. Probable integral membrane protein, equivalent to O32878|MLCB1779.16c|ML0675 hypothetical 9.6 KDA protein from Mycobacterium leprae (91 aa), FASTA scores: opt: 439, E(): 3.9e-23, (78.9% identity in 90 aa overlap). Identical, but with a gap, to O50377|Rv3346c|MTV004.02c hypothetical 8.9 KDA protein from Mycobacterium tuberculosis (85 aa), FASTA scores: opt: 413,E(): 2.1e-21, (85.55% identity in 97 aa overlap). Also some similarity to other proteins e.g. Q9K3J5|SC2A6.10 putative integral membrane protein from Streptomyces coelicolor (178 aa), FASTA scor [...]

Anti-sigma factor RskA (regulator of sigma K); An anti-sigma factor for extracytoplasmic function (ECF) sigma factor SigK. ECF sigma factors are held in an inactive form by an anti-sigma factor until released by regulated intramembrane proteolysis (RIP). RIP occurs when an extracytoplasmic signal triggers a concerted proteolytic cascade to transmit information and elicit cellular responses. The membrane-spanning regulatory substrate protein is first cut extracytoplasmically (site-1 protease, S1P), then within the membrane itself (site-2 protease, S2P, Rip1), while cytoplasmic proteases [...]

Rv1855c, (MTCY359.18), len: 307 aa. Possible oxidoreductase, possibly a monooxygenase. Contains PS00217 Sugar transport proteins signature 2, probably fortuitously. Similar to G487716 (78-11) lincomycin production genes (29.2% identity in 154 aa overlap). Also similar to other Mycobacterium tuberculosis proteins e.g. Rv0953c, Rv0791c, Rv0132c, Rv2951c, etc.

Rv3346c, (MTV004.02c), len: 85 aa. Conserved transmembrane protein, highly similar to mycobacterium hypothetical proteins O50384|Rv3355c|MTV004.12c from strain H37Rv (97 aa), FASTA scores: opt: 413, E(): 4.6e-23,(85.55% identity in 97 aa overlap); O32878|MLCB1779.16c|ML0675 from Mycobacterium leprae (91 aa), FASTA scores: opt: 349, E(): 1.7e-18, (67.35% identity in 95 aa overlap). Contains possible membrane spanning regions.

Possible membrane protein; Rv3675, (MTV025.023), len: 125 aa. Possible membrane protein, with some similarity to Q9YCZ2|APE1120 hypothetical 11.7 KDA protein from Aeropyrum pernix (103 aa), FASTA scores: opt: 100, E(): 9, (40.0% identity in 55 aa overlap).