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).

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.

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.

Conserved protein; Rv0455c, (MTV037.19c), len: 148 aa. Conserved protein, equivalent to CAC31896.1|AL583925 possible secreted protein from Mycobacterium leprae (153 aa). Has hydrophobic stretch at N-terminus. A core mycobacterial gene; conserved in mycobacterial strains (See Marmiesse et al., 2004). Predicted to be an outer membrane protein (See Song et al., 2008).

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.

Rv3533c, (MTCY03C7.23), len: 582 aa. PPE62, Member of the Mycobacterium tuberculosis PPE protein family,similar to many, e.g. O53309|Rv3159c|MTV014.03c (590 aa) FASTA scores: opt: 2289, E(): 2.3e-95, (63.5% identity in 600 aa overlap). Predicted to be an outer membrane protein (See Song et al., 2008).

Probable conserved transmembrane transport protein MmpL11; Part of a heme-iron acquisition system. Receives heme from the heme-binding protein Rv0203 and transports it into the mycobacterial cell. Contributes to virulence. Belongs to the resistance-nodulation-cell division (RND) (TC 2.A.6) family. MmpL subfamily.