Probable O-succinylhomoserine sulfhydrylase MetZ (OSH sulfhydrylase); Catalyzes the formation of L-homocysteine from O-succinyl-L- homoserine (OSHS) and hydrogen sulfide.

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.

Probable lyase; Rv3684, (MTV025.032), len: 346 aa. Probable lyase, and more specifically a cysteine synthase, highly similar to many lyases e.g. Q9K3N2|SCG20A.08c putative lyase from Streptomyces coelicolor (374 aa), FASTA scores: opt: 1469,E(): 3.7e-85, (63.35% identity in 341 aa overlap) (shorter 31 aa at N-terminus); Q9KT44|VC1061 cysteine synthase/ cystathionine beta-synthase family protein from Vibrio cholerae (355 aa), FASTA scores: opt: 1366, E(): 1.1e-78,(63.25% identity in 321 aa overlap); Q9I4R3|PA1061 hypothetical protein from Pseudomonas aeruginosa (365 aa),FASTA scores: op [...]

O-acetylserine sulfhydrylase; Catalyzes the conversion of O-acetylserine (OAS) to cysteine through the elimination of acetate and addition of hydrogen sulfide. Belongs to the cysteine synthase/cystathionine beta- synthase family.

Rv3054c, (MTCY22D7.28), len: 184 aa. Conserved hypothetical protein, similar to Q9RD22|SCM1.21 putative secreted protein from Streptomyces coelicolor (187 aa),FASTA scores: opt: 651, E(): 1.5e-33, (56.8% identity in 175 aa overlap). Also shares similarity with other hypothetical proteins and Chromate reductases e.g. AAK56853|CHRR from Pseudomonas putida (186 aa), FASTA scores: opt: 339, E(): 3.3e-14, (38.75% identity in 160 aa overlap). Contains aminotransferases class-II pyridoxal-phosphate attachment site (PS00599) near C-terminus.

Conserved protein; Rv3463, (MTCY13E12.16), len: 285 aa. Conserved protein, similar to Q9RDA2|SCE20.23 hypothetical 31.4 KDA protein from Streptomyces coelicolor (290 aa), FASTA scores: opt: 770, E(): 2.2e-41, (48.6% identity in 247 aa overlap); and Q9X7Y1|SC6A5.35 putative oxidoreductase from Streptomyces coelicolor (341 aa), (see blastp results),FASTA scores: opt: 119, E(): 2.9, (24.1% identity in 274 aa overlap).

Rv0415, (MTCY22G10.12), len: 340 aa. Possible thiO,thiamine biosynthesis oxidoreductase, equivalent to T44739|4154054|CAA22708.1|AL035159|MLCB1450.24 hypothetical protein from Mycobacterium leprae (340 aa), FASTA scores: opt: 1867, E(): 0, (82.0% identity in 338 aa overlap). Shows some similarity to other thiO proteins e.g. THIO_RHIET|O34292 Putative thiamine biosynthesis oxidoreductase from Rhizobium etli plasmid pb (327 aa) (see citation below); AAG31046.1|AF264948_8|THIO putative amino acid oxidase flavoprotein ThiO from Erwinia amylovora (349 aa); NP_106392.1|14025578|BAB52178.1|AP [...]

Rv1905c, (MTCY180.13), len: 320 aa. Probable aao,D-amino acid oxidase, similar to many. Equivalent to AJ000521|MLCOSL672.02|O33145 Mycobacterium leprae (320 aa),FASTA results: opt: 1541, E(): 0, (71.7% identity in 315 aa overlap); also similar to OXDD_BOVIN|P31228 d-aspartate oxidase from bos taurus (338 aa), FASTA results: opt: 461,E(): 1.1e-21, (31.8% identity in 321 aa overlap).

Possible oxygenase; Rv1937, (MTCY09F9.27c), len: 839 aa. Possible oxygenase, similar in N-terminus to N-terminal part (approx. 350 aa) of dioxygenases (including ring-hydroxylating dioxygenase electron transfer components) and monooxygenases, e.g. AAC34815.1|AF071556 anthranilate dioxygenase reductase from Acinetobacter sp. (343 aa); AAK52291.1|AY026914|AntC putative anthranilate dioxygenase reductase from Pseudomonas putida (340 aa); AAF63450.1|AF218267_7|AF218267 benzoate dioxygenase / ferredoxin reductase from Pseudomonas putida (336 aa); P23101|XYLZ_PSEPU toluate 1,2-dioxygenase el [...]