mtrA



Type
protein_coding
Name
mtrA
Locus Name

Rv3246c

Product

Two component sensory transduction transcriptional regulatory protein MtrA

Functional Category

Regulatory proteins

Location
3626663..3627349 (- strand)
Gene Length
686 bp
Nucleotides
ATGGACACCATGAGGCAAAGGATTTTGGTCGTTGACGACGACGCTTCGTTGGCTGAGATGCTCACCATCGTGCTGCGGGGGGAAGGCTTCGACACCGCGGTCATCGGCGACGGTACTCAGGCTCTGACCGCGGTGCGCGAGCTGCGCCCCGATCTGGTGTTATTGGATTTGATGCTGCCCGGTATGAACGGCATCGACGTGTGCCGGGTGTTGCGCGCCGATTCCGGTGTTCCGATCGTGATGCTCACCGCAAAGACCGACACCGTGGATGTGGTGCTGGGTCTGGAGTCGGGCGCCGACGACTACATCATGAAGCCGTTCAAGCCCAAGGAGCTGGTTGCGCGGGTGCGGGCGCGGCTGCGCCGCAACGACGACGAACCCGCCGAGATGCTGTCCATCGCCGACGTAGAAATCGACGTACCGGCGCACAAGGTCACTCGCAACGGTGAGCAGATCTCGTTGACACCGCTGGAATTCGACCTGTTGGTCGCATTGGCGCGCAAGCCGCGCCAGGTGTTTACTCGTGATGTGCTGCTCGAACAGGTATGGGGTTACCGGCACCCAGCCGATACCAGGCTGGTGAACGTGCATGTCCAGCGTCTGCGGGCCAAGGTCGAAAAGGATCCCGAGAACCCGACTGTGGTGCTGACCGTTCGAGGAGTGGGGTACAAGGCCGGACCTCCGTG
Drug Resistance

Check for drug resistance association at TBDREAMDB

Mutations

Check for mutants available at TARGET


Function
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 increases dramatically. Binds the promoter of dnaA, fbpD, ripA and itself, as well as oriC, which it may regulate. Upon co-overexpression of MrtA and MtrB growth in macrophages is partially restored, dnaA expression is not induced, although mouse infections are still attenuated, suggesting that bacterial growth in macrophages requires an optimal ratio of MtrB to MtrA. {ECO:0000269|PubMed:20223818, ECO:0000269|PubMed:21295603, ECO:0000269|PubMed:22610443}.
Family

Unknown

GO
InterPro

UniProt
P9WGM7
GenBank
Rv3246c
EnsemblBacteria
Rv3246c
Mycobrowser
Rv3246c


2GWR
Summary
Name
DNA-binding response regulator MtrA
Family
Unknown
Protein Sequence
MDTMRQRILVVDDDASLAEMLTIVLRGEGFDTAVIGDGTQALTAVRELRPDLVLLDLMLPGMNGIDVCRVLRADSGVPIVMLTAKTDTVDVVLGLESGADDYIMKPFKPKELVARVRARLRRNDDEPAEMLSIADVEIDVPAHKVTRNGEQISLTPLEFDLLVALARKPRQVFTRDVLLEQVWGYRHPADTRLVNVHVQRLRAKVEKDPENPTVVLTVRGVGYKAGPP
Mass
25,279 Da
Length
228 Aa

Rv3246c doesn't seem to be a targeted by any drug.



Regulation of response regulator autophosphorylation through interdomain contacts.
J Biol Chem. 2010 Oct 15;285(42):32325-35. doi: 10.1074/jbc.M110.157164. Epub 2010 Aug 11.
Domain orientation in the inactive response regulator Mycobacterium tuberculosis MtrA provides a barrier to activation.
Biochemistry. 2007 Jun 12;46(23):6733-43. doi: 10.1021/bi602546q. Epub 2007 May 19.
Septal localization of the Mycobacterium tuberculosis MtrB sensor kinase promotes MtrA regulon expression.
J Biol Chem. 2012 Jul 6;287(28):23887-99. doi: 10.1074/jbc.M112.346544. Epub 2012 May 20.
Elements of signal transduction in Mycobacterium tuberculosis: in vitro phosphorylation and in vivo expression of the response regulator MtrA.
J Bacteriol. 1996 Jun;178(11):3314-21. doi: 10.1128/jb.178.11.3314-3321.1996.
Deciphering the biology of Mycobacterium tuberculosis from the complete genome sequence.
Nature. 1998 Jun 11;393(6685):537-44. doi: 10.1038/31159.
An essential two-component signal transduction system in Mycobacterium tuberculosis.
J Bacteriol. 2000 Jul;182(13):3832-8. doi: 10.1128/jb.182.13.3832-3838.2000.
Modulation of Mycobacterium tuberculosis proliferation by MtrA, an essential two-component response regulator.
Mol Microbiol. 2006 May;60(3):643-57. doi: 10.1111/j.1365-2958.2006.05137.x.
Characterization of a functional C-terminus of the Mycobacterium tuberculosis MtrA responsible for both DNA binding and interaction with its two-component partner protein, MtrB.
J Biochem. 2010 Nov;148(5):549-56. doi: 10.1093/jb/mvq082. Epub 2010 Jul 29.
Mycobacterium tuberculosis origin of replication and the promoter for immunodominant secreted antigen 85B are the targets of MtrA, the essential response regulator.
J Biol Chem. 2010 May 21;285(21):15816-27. doi: 10.1074/jbc.M109.040097. Epub 2010 Mar 11.
Prokaryotic ubiquitin-like protein (Pup) proteome of Mycobacterium tuberculosis [corrected] .
PLoS One. 2010 Jan 6;5(1):e8589. doi: 10.1371/journal.pone.0008589.
Proteogenomic analysis of Mycobacterium tuberculosis by high resolution mass spectrometry.
Mol Cell Proteomics. 2011 Dec;10(12):M111.011627. doi: 10.1074/mcp.M111.011445. Epub 2011 Oct 3.
Mycobacterium tuberculosis mtrA merodiploid strains with point mutations in the signal-receiving domain of MtrA exhibit growth defects in nutrient broth.
Plasmid. 2011 May;65(3):210-8. doi: 10.1016/j.plasmid.2011.01.002. Epub 2011 Feb 3.