Rv1463, (MTV007.10), len: 266 aa. Probable conserved ATP-binding protein ABC transporter, equivalent to Z99125|MLCL536.26c putative ABC transporter ATP-binding protein from Mycobacterium leprae (260 aa), FASTA scores: opt: 1444, E(): 0, (86.0% identity in 267 aa overlap). Very similar to U38804|PPU38804_55 ATP-dependent transporter YCF16 from porphyra purpurea chloroplast (251 aa), FASTA scores: opt: 822, E(): 0, (52.4% identity in 248 aa overlap); and similar to others. Contains PS00017 ATP/GTP-binding site motif A (P-loop). Belongs to the ATP-binding transport protein family (ABC tra [...]

Rv1465, (MTV007.12), len: 162 aa. Possible nitrogen fixation related protein. Equivalent to Z99125|MLCL536.24c nitrogen fixation protein NIFU from Mycobacterium leprae (165 aa), FASTA scores: opt: 870, E(): 0, (81.8% identity in 165 aa overlap). Also similar to O32163|Z99120|NIFU_BACSU NifU-like protein from Bacillus subtilis (147 aa), FASTA scores: opt: 354, E(): 4.1e-17,(38.3% identity in 141 aa overlap) and to AL096839|SCC22.02 hypothetical protein from Streptomyces coelicolor (156 aa),FASTA scores: opt: 569, E(): 1.2e-31, (56.3% identity in 158 aa overlap).

Conserved protein; Rv1461, (MTV007.08), len: 846 aa. Conserved protein. Equivalent of spliced protein from Mycobacterium leprae MLCL536.28c len: 869. Residues 1-253 represent N-extein,and 613-846 the C-extein. The intein present from residues 254 - 612 is different in sequence and site of the insertion from the one present in MLCL536.28c. FASTA scores: Z99125|MLCL536_23 Mycobacterium leprae cosmid L536 (869 aa), opt: 1498 E(): 0, (54.1% identity in 917 aa overlap). The mature protein is similar to Z99120|BSUB0017_150 hypothetical Bacillus subtilis protein (465 aa), FASTA scores: opt:10 [...]

Conserved protein; Rv1466, (MTV007.13), len: 115 aa. Conserved protein. Equivalent to Z99125|MLCL536.23c hypothetical protein from Mycobacterium leprae (115 aa), FASTA scores: opt: 648, E(): 0, (81.7% identity in 115 aa overlap). Similar to ORF's downstream of sigma factors in Streptococcus mutans and Streptococcus pneumoniae e.g. O06451 ORF3 downstream of RpoD (SPDNAGCPO) (109 aa). Alternative TTG start possible at 13757 then avoids overlap with MTV007.12.

Rv3913, (MT4032, MTV028.04), len: 335 aa. Probable trxB2, thioredoxin reductase (see citation below),equivalent to O30973|TRXB_MYCSM thioredoxin reductase from Mycobacterium smegmatis (311 aa), FASTA scores: opt: 1575,E(): 1.8e-87, (78.35% identity in 305 aa overlap); and highly similar, but shorter at C-terminus, to P46843|TRXB_MYCLE|TRXB/a|TRX|ML2703 bifunctional thioredoxin reductase/thioredoxin from Mycobacterium leprae (458 aa), FASTA scores: opt: 1766, E(): 8.7e-99, (83.25% identity in 328 aa overlap). Also highly similar to many e.g. P52215|TRXB_STRCO|SCH24.12 from Streptomyces [...]

Cystathionine gamma-synthase MetB (CGS) (O-succinylhomoserine [thiol]-lyase); Catalyzes the formation of L-cystathionine from O-succinyl-L- homoserine (OSHS) and L-cysteine, via a gamma-replacement reaction (By similarity). In the absence of thiol, catalyzes gamma-elimination to form 2-oxobutanoate, succinate and ammonia.

Rv1471, (MTV007.18), len: 123 aa. Probable trxB1,thioredoxin, similar to many bacterial thioredoxins e.g. P33636|THI2_ECOLI from Escherichia coli (139 aa), FASTA scores: opt: 290, E(): 1.8e-13, (44.3% identity in 97 aa overlap); etc. Highly similar to Rv1470|TrxA probable thioredoxin from Mycobacterium tuberculosis (124 aa), FASTA scores: opt: 402, E(): 1.2e-32, (54.4% identity in 114 aa overlap). Contains PS00194 Thioredoxin family active site. Belongs to the thioredoxin family. Note that previously known as trxB.

Rv1460, (MTV007.07), len: 268 aa. Probable transcriptional regulatory protein. Equivalent to Z99125|MLCL536.29c hypothetical protein from Mycobacterium leprae (254 aa), FASTA scores: opt: 1273, E(): 0, (79.6% identity in 250 aa overlap). Possible helix-turn-helix motif between aa 68 - 89. Start changed since original submission.

Probable exported protein; Catalyzes the cleavage of sphingomyelin, a major lipid in eukaryotic cells, into ceramide and phosphocholine, which are then utilized by M.tuberculosis as carbon, nitrogen and phosphorus sources, respectively. Thus, enables M.tuberculosis to utilize sphingomyelin as a source of several essential nutrients for intracellular growth during infection. Furthermore, lyses erythrocytes and constitutes the main hemolytic factor of M.tuberculosis.