Two component sensory transduction transcriptional regulatory protein MtrA; Member of the two-component regulatory system MtrA/MtrB. Binds direct repeat motifs of sequence 5'-GTCACAGCG-3', phosphorylation confers higher affinity. Overexpression decreases bacteria viability upon infection of human THP-1 macrophage cell line, due at least in part to impaired blockage of phagosome-lysosome fusion (upon infection bacteria usually remain in phagosomes). Infecting C57BL/6 mice with an overexpressing strain leads to an attentuated infection in both spleen and lungs. The level of dnaA mRNA inc [...]

Conserved hypothetical protein; Rv3242c, (MTCY20B11.17c), len: 213 aa. Conserved hypothetical protein, highly similar in N-terminus to Q9CCI9|ML0776 hypothetical protein from Mycobacterium leprae (85 aa), FASTA scores: opt: 324, E(): 1.7e-13,(78.1% identity in 64 aa overlap). Also similar to Q9RUJ7|DR1389 putative competence protein COMF from Deinococcus radiodurans (219 aa), FASTA scores: opt: 223,E(): 6.3e-07, (35.8% identity in 215 aa overlap); BAB50338|MLL3453 hypothetical protein from Rhizobium loti (Mesorhizobium loti) (240 aa), FASTA scores: opt: 218, E(): 1.4e-06, (28.5% identi [...]

Two component sensory transduction histidine kinase MtrB; Member of the two-component regulatory system MtrA/MtrB. Probably functions as a membrane-associated protein kinase that phosphorylates MtrA in response to environmental signals. Autophosphorylates and transfers phosphate to MtrA in vitro. Overexpression of MtrA alone decreases bacterial virulence in mouse infection; co-expression of MtrA and MtrB restores normal bacterial growth, suggesting that bacterial growth in macrophages requires an optimal ratio of MtrB to MtrA. Probably plays a role in cell division.

Thymidylate kinase Tmk (dTMP kinase) (thymidylic acid kinase) (TMPK); Catalyzes the reversible phosphorylation of deoxythymidine monophosphate (dTMP) to deoxythymidine diphosphate (dTDP), using ATP as its preferred phosphoryl donor. Situated at the junction of both de novo and salvage pathways of deoxythymidine triphosphate (dTTP) synthesis, is essential for DNA synthesis and cellular growth. Has a broad specificity for nucleoside triphosphates, being highly active with ATP or dATP as phosphate donors, and less active with ITP, GTP, CTP and UTP; Belongs to the thymidylate kinase family.