Probable conserved transmembrane transport protein MmpL5; Part of an export system, which is required for biosynthesis and secretion of siderophores.

Rv0452, (MTV037.16), len: 236 aa. Possible transcriptional regulator, similar to several putative TetR-family transcriptional regulators from Streptomyces coelicolor. Also similar in N-terminus to U1740Y|U15183|MLU15183_33 from Mycobacterium leprae (67 aa), FASTA score: (76.1% identity in 67 aa overlap). Contains probable helix-turn-helix motif at aa 44-65 (Score 1727, +5.07 SD).

Rv0449c, (MTV037.13c), len: 439 aa. Conserved hypothetical protein, some similarity with several hypothetical proteins and various enzymes e.g. AAK24569.1|AE005927 amine oxidase, flavin-containing from Caulobacter crescentus (454 aa); BAB02771.1|AB023036 mycolic acid methyl transferase-like protein from Arabidopsis thaliana (842 aa); BAB01742.1|AP000374 protein which contains similarity to cyclopropane fatty acid synthase from Arabidopsis thaliana (793 aa); etc. Has hydrophobic stretch at N-terminus.

Iron-regulated transporter IrtA; Part of the ABC transporter complex IrtAB involved in iron import. Transmembrane domains (TMD) form a pore in the membrane and the ATP-binding domain (NBD) is responsible for energy generation. Required for replication in human macrophages and in mouse lungs.

Probable transcriptional regulatory protein; Regulates the expression of the Rv1217c-Rv1218c multidrug efflux system and its own expression. Acts by binding to promoter regions of Rv1219c and upstream of the Rv1218c gene. Important for survival in prolonged stationary phase and during macrophage infection. May be used to eliminate non- growing mycobacteria.

Possible heme degrading protein MhuD; Catalyzes the oxidative degradation of the heme macrocyclic porphyrin ring in the presence of a suitable electron donor such as ascorbate or NADPH--cytochrome P450 reductase, with subsequent release of free iron.

Rv0446c, (MTV037.10c), len: 256 aa. Possible conserved transmembrane protein, similar at N-terminus to U1740AF|U15183|MLU15183_40 from Mycobacterium leprae (117 aa), FASTA scores: opt: 175, E(): 2.5e-05, (62.5% identity in 40 aa overlap); and at C-terminus to AL021529|SC10A5_3 from Streptomyces coelicolor (226 aa), FASTA scores: opt: 207, E(): 9.8e-07, (34.2% identity in 114 aa overlap). Also similar to others hypothetical proteins e.g. AAK04680.1|AE006291_14|AE006291 hypothetical protein from Lactococcus lactis subsp. lactis (257 aa).

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.

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).