3UID

Crystal Structure of Protein Ms6760 from Mycobacterium smegmatis


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.571 Å
  • R-Value Free: 0.213 
  • R-Value Work: 0.192 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Crystal structure of the toxin Msmeg_6760, the structural homolog of Mycobacterium tuberculosis Rv2035, a novel type II toxin involved in the hypoxic response.

Bajaj, R.A.Arbing, M.A.Shin, A.Cascio, D.Miallau, L.

(2016) Acta Crystallogr F Struct Biol Commun 72: 863-869

  • DOI: 10.1107/S2053230X16017957

  • PubMed Abstract: 
  • The structure of Msmeg_6760, a protein of unknown function, has been determined. Biochemical and bioinformatics analyses determined that Msmeg_6760 interacts with a protein encoded in the same operon, Msmeg_6762, and predicted that the operon is a to ...

    The structure of Msmeg_6760, a protein of unknown function, has been determined. Biochemical and bioinformatics analyses determined that Msmeg_6760 interacts with a protein encoded in the same operon, Msmeg_6762, and predicted that the operon is a toxin-antitoxin (TA) system. Structural comparison of Msmeg_6760 with proteins of known function suggests that Msmeg_6760 binds a hydrophobic ligand in a buried cavity lined by large hydrophobic residues. Access to this cavity could be controlled by a gate-latch mechanism. The function of the Msmeg_6760 toxin is unknown, but structure-based predictions revealed that Msmeg_6760 and Msmeg_6762 are homologous to Rv2034 and Rv2035, a predicted novel TA system involved in Mycobacterium tuberculosis latency during macrophage infection. The Msmeg_6760 toxin fold has not been previously described for bacterial toxins and its unique structural features suggest that toxin activation is likely to be mediated by a novel mechanism.


    Organizational Affiliation

    UCLA-DOE Institute and Departments of Biological Chemistry and Chemistry and Biochemistry, University of California, Los Angeles, CA 90095-1570, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Putative uncharacterized protein
A, B
168Mycobacterium smegmatis (strain ATCC 700084 / mc(2)155)Mutation(s): 0 
Find proteins for A0R731 (Mycobacterium smegmatis (strain ATCC 700084 / mc(2)155))
Go to UniProtKB:  A0R731
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.571 Å
  • R-Value Free: 0.213 
  • R-Value Work: 0.192 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 48.320α = 90.00
b = 60.210β = 90.00
c = 100.980γ = 90.00
Software Package:
Software NamePurpose
PDB_EXTRACTdata extraction
MOLREPphasing
XDSdata reduction
PHENIXrefinement
XSCALEdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-11-23
    Type: Initial release
  • Version 1.1: 2016-12-14
    Type: Database references