Hypothetical alanine and proline rich protein; Has a dual function in uptake of nutrients and induction of host cell death. The N-terminal domain (NTD) forms an outer membrane channel and is used for uptake of nutrients across the outer membrane. The secreted C-terminal toxic domain (TNT) acts as a glycohydrolase, which hydrolyzes the essential cellular coenzyme NAD(+) in the cytosol of infected macrophages, leading to necrotic host cell death. Both functions are required for survival, replication and cytotoxicity of M.tuberculosis in macrophages.

Rv3906c, (MTCY15F10.05), len: 169 aa. Conserved hypothetical protein, strongly related to Q50578|AT9S (sod related in Escherichia coli) from Mycobacterium tuberculosis strain aoyama B (155 aa), but apparently different as flanking sequences differ and shorter 43 aa,FASTA scores: opt: 548, E(): 1.3e-26, (79.4% identity in 102 aa overlap). Selfmarch results suggest that Rv3906c is not related to any other hypothetical protein from Mycobacterium tuberculosis strain H37Rv except itself. Shows also similarity with Q9VFR2|CG9297 hypothetical protein from Drosophila melanogaster (Fruit fly) ( [...]

Hypothetical protein; Antitoxin for tuberculosis necrotizing toxin (TNT). Acts by binding directly to TNT, which inhibits NAD(+) glycohydrolase activity of TNT and protects M.tuberculosis from self-poisoning.

Rv2347c, (MT2412, MTCY98.16c), len: 98 aa. EsxP,ESAT-6 like protein (see citation below). Member of M. tuberculosis hypothetical QILSS protein family with Rv1197,Rv1792, Rv1038c and Rv3620c. Belongs to the ESAT6 family. A core mycobacterial gene; conserved in mycobacterial strains (See Marmiesse et al., 2004).

Possible alternative RNA polymerase sigma factor SigM; 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 (RsaM, AC L7N5D7) until released by regulated intramembrane proteolysis (Probable). This sigma factor is required for the synthesis of surface or secreted molecules.

Poly(A) polymerase PcnA; Rv3907c, (MTCY15F10.04), len: 480 aa. Probable pcnA,polynucleotide polymerase, equivalent to Q9CCY1|PCNA|ML2697 PCNA protein from Mycobacterium leprae (486 aa), FASTA scores: opt: 2713, E(): 4.3e-160, (84.1% identity in 478 aa overlap); and Q59534|PCNB POLYA polymerase from Mycobacterium leprae (411 aa) FASTA scores: opt: 2077, E(): 7.1e-121, (82.55% identity in 373 aa overlap). Also highly similar to many e.g. Q9X8T2|SCH24.18 putative RNA nucleotidyltransferase from Streptomyces coelicolor (483 aa), FASTA scores: opt: 1856, E(): 3.7e-107, (61.55% identity in 4 [...]

Probable lipoprotein LppN; Probably involved in bacterial recognition and uptake by its host (human).

Rv3445c, (MTCY77.17c), len: 105 aa. EsxU, ESAT-6 like protein (see citations below), showing weak similarity to O30373|VCD|PA2257 pyoverdine biosynthesis protein from Pseudomonas aeruginosa (215 aa), FASTA scores: opt: 103,E(): 5.6, (32.35% identity in 133 aa overlap). Seems to belong to the ESAT6 family. Start changed since first submission (-20 aa); Belongs to the WXG100 family. CFP-10 subfamily.

PE-PGRS family protein PE_PGRS45; Rv2615c, (MTCY01A10.19), len: 461 aa. PE_PGRS45,Member of the Mycobacterium tuberculosis PE family, PGRS subfamily of gly-rich proteins (see citation below), highly similar to many e.g. P71664|Rv1396c|MTCY21B4.13c from Mycobacterium tuberculosis (576 aa), FASTA scores: opt: 1629, E(): 4.8e-58, (56.65% identity in 482 aa overlap). Equivalent to AAK47006 from Mycobacterium tuberculosis strain CDC1551 (476 aa) but shorter 15 aa.