4PPQ

Mycobacterium tuberculosis RecA citrate bound low temperature structure IIA-CR


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.85 Å
  • R-Value Free: 0.253 
  • R-Value Work: 0.194 
  • R-Value Observed: 0.200 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structural studies on Mycobacterium tuberculosis RecA: Molecular plasticity and interspecies variability

Chandran, A.V.Prabu, J.R.Nautiyal, A.Patil, K.N.Muniyappa, K.Vijayan, M.

(2015) J Biosci 40: 13-30

  • DOI: 10.1007/s12038-014-9497-x
  • Primary Citation of Related Structures:  
    4PO1, 4POA, 4PO8, 4PO9, 4PPN, 4PPQ, 4PPF, 4PPG, 4PR0, 4PQR

  • PubMed Abstract: 
  • Structures of crystals of Mycobacterium tuberculosis RecA, grown and analysed under different conditions, provide insights into hitherto underappreciated details of molecular structure and plasticity. In particular, they yield information on the inva ...

    Structures of crystals of Mycobacterium tuberculosis RecA, grown and analysed under different conditions, provide insights into hitherto underappreciated details of molecular structure and plasticity. In particular, they yield information on the invariant and variable features of the geometry of the P-loop, whose binding to ATP is central for all the biochemical activities of RecA. The strengths of interaction of the ligands with the P-loop reveal significant differences. This in turn affects the magnitude of the motion of the 'switch' residue, Gln195 in M. tuberculosis RecA, which triggers the transmission of ATP-mediated allosteric information to the DNA binding region. M. tuberculosis RecA is substantially rigid compared with its counterparts from M. smegmatis and E. coli, which exhibit concerted internal molecular mobility. The interspecies variability in the plasticity of the two mycobacterial proteins is particularly surprising as they have similar sequence and 3D structure. Details of the interactions of ligands with the protein, characterized in the structures reported here, could be useful for design of inhibitors against M. tuberculosis RecA.


    Related Citations: 
    • Functionally important movements in RecA molecules and filaments: studies involving mutation and environmental changes
      Prabu, J.R., Manjunath, G.P., Chandra, N.R., Muniyappa, K., Vijayan, M.
      (2008) Acta Crystallogr D Biol Crystallogr 64: 1146
    • Crystallographic identification of an ordered C-terminal domain and a second nucleotide-binding site in RecA: new insights into allostery
      Krishna, R., Manjunath, G.P., Kumar, P., Surolia, A., Chandra, N.R., Muniyappa, K., Vijayan, M.
      (2006) Nucleic Acids Res 34: 2186
    • Crystal structures of Mycobacterium smegmatis RecA and its nucleotide complexes
      Datta, S., Krishna, R., Ganesh, N., Chandra, N.R., Muniyappa, K., Vijayan, M.
      (2003) J Bacteriol 185: 4280
    • Structural studies on MtRecA-nucleotide complexes: insights into DNA and nucleotide binding and the structural signature of NTP recognition
      Datta, S., Ganesh, N., Chandra, N.R., Muniyappa, K., Vijayan, M.
      (2003) Proteins 50: 474
    • Crystal structures of Mycobacterium tuberculosis RecA and its complex with ADP-AlF(4): implications for decreased ATPase activity and molecular aggregation
      Datta, S., Prabu, M.M., Vaze, M.B., Ganesh, N., Chandra, N.R., Muniyappa, K., Vijayan, M.
      (2000) Nucleic Acids Res 28: 4964

    Organizational Affiliation

    Molecular Biophysics Unit, Indian Institute of Science, Bangalore 560 012.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Protein RecA, 1st part, 2nd partA350Mycobacterium tuberculosisMutation(s): 0 
Gene Names: MT2806MTV002.02crecARv2737c
EC: 3.1
Find proteins for P9WHJ3 (Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv))
Explore P9WHJ3 
Go to UniProtKB:  P9WHJ3
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
FLC
Query on FLC

Download CCD File 
A
CITRATE ANION
C6 H5 O7
KRKNYBCHXYNGOX-UHFFFAOYSA-K
 Ligand Interaction
EDO
Query on EDO

Download CCD File 
A
1,2-ETHANEDIOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.85 Å
  • R-Value Free: 0.253 
  • R-Value Work: 0.194 
  • R-Value Observed: 0.200 
  • Space Group: P 61
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 106.47α = 90
b = 106.47β = 90
c = 70.51γ = 120
Software Package:
Software NamePurpose
MAR345dtbdata collection
PHASERphasing
REFMACrefinement
MOSFLMdata reduction
SCALAdata scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2015-03-18
    Type: Initial release
  • Version 1.1: 2017-08-16
    Changes: Refinement description, Source and taxonomy