Prephenate dehydrogenase TyrA (PDH) (hydroxyphenylpyruvate synthase); Catalyzes the NAD(+)-dependent conversion of prephenate to p- hydroxyphenylpyruvate, with the elimination of carbon dioxide. Is a key regulatory enzyme in tyrosine biosynthesis. Displays no chorismate mutase (CM) activity, in contrast to TyrA from E.coli and some other bacteria, that are bifunctional and possess a CM domain.

Probable histidinol dehydrogenase HisD (HDH); Catalyzes the sequential NAD-dependent oxidations of L- histidinol to L-histidinaldehyde and then to L-histidine.

Rv1600, (MTCY336.04c), len: 380 aa. Probable hisC1,histidinol-phosphate aminotransferase O06591. Similar to many e.g. HIS8_STRCO|P16246 from Streptomyces coelicolor (369 aa), FASTA results: opt: 1353, E(): 0, (59.0% identity in 356 aa overlap). Some similarity to other Mycobacterium tuberculosis aminotransferases e.g. Rv3772|MTCY13D12.06,FASTA results: E(): 7.4e-25, (33.7% identity in 365 aa overlap). Contains aminotransferases class-II pyridoxal-phosphate attachment site (PS00599). Belongs to class-II of pyridoxal-phosphate-dependent aminotransferases. Note that previously known as hisC.

Rv3838c, (MTCY01A6.31), len: 321 aa. PheA,prephenate dehydratase (see citation below), equivalent to Q9CDC4|PHEA|ML0078 putative prephenate dehydratase from Mycobacterium leprae (322 aa), FASTA scores: opt: 1690,E(): 1.3e-93, (84.25% identity in 311 aa overlap). Also highly similar to others e.g. P10341|PHEA_CORGL from Corynebacterium glutamicum (Brevibacterium flavum) (315 aa), FASTA scores: opt: 843, E(): 4e-43, (45.8% identity in 308 aa overlap); Q9ZBX0|SCD78.29c from Streptomyces coelicolor (310 aa), FASTA scores: opt: 820, E(): 9.2e-42,(46.45% identity in 312 aa overlap); Q44104|P [...]

Rv2231c, (MTCY427.12c), len: 364 aa. Possible cobC,aminotransferase. Note that initiation codon uncertain. Similar to CobC aminotransferases e.g. sp|P21633|COBC_PSEDE COBC protein (333 aa) opt: 277, E(): 1.7e-11; 28.8% identity in 313 aa overlap and also to e.g. SW:HIS8_ECOLI P06986 histidinol-phosphate aminotransferase (27.0% identity in 289 aa overlap), contains PS00105 aminotransferases class-I pyridoxal-phosphate attachment site. Real Mycobacterium tuberculosis histidinol-phosphate aminotransferase, hisC, is Rv1600 (MTCY336.04c); Belongs to the class-I pyridoxal-phosphate-dependent [...]

Probable monophosphatase; Catalyzes the dephosphorylation of histidinol-phosphate to histidinol, the direct precursor of histidine; Belongs to the inositol monophosphatase superfamily.

Catalase-peroxidase-peroxynitritase T KatG; Bifunctional enzyme with both catalase and broad-spectrum peroxidase activity, oxidizing various electron donors including NADP(H). Protects M.tuberculosis against toxic reactive oxygen species (ROS) including hydrogen peroxide as well as organic peroxides and thus contributes to its survival within host macrophages by countering the phagocyte oxidative burst. Also displays efficient peroxynitritase activity, which may help the bacterium to persist in macrophages. Catalyzes the oxidative activation of the antitubercular pro- drug isoniazid (I [...]

Rv1435c, (MTCY493.19), len: 202 aa. Probable conserved Pro-, Gly-, Val-rich secreted protein (see citation below) with a N-terminal signal sequence. Similar at C-terminus to AF017099|AF017099_1 Mycobacterium tuberculosis pGB1 (87 aa), FASTA scores: opt: 550, E(): 2.3e-17, (97.7% identity in 86 aa overlap). Shows some similarity to N-terminus of CPN_DROME|Q02910 calphotin. Drosophila melanogaster (865 aa), FASTA scores: opt: 266,E(): 2.5e-05, (37.2% identity in 191 aa overlap). Contains at least five 7 aa imperfect repeats. Also shows similarity to other Mycobacterium tuberculosis prote [...]

Rv1726, (MTCY04C12.11), len: 461 aa. Probable oxidoreductase, similar to HDNO_ARTOX|P08159 6-hydroxy-d-nicotine oxidase (458 aa), FASTA scores: opt: 678, E(): 0, (29.5% identity in 465 aa overlap). Also similar to Mycobacterium tuberculosis hypothetical dehydrogenases e.g. Rv3107c, Rv1257c, etc.