4MFR

Crystal structure of Mycobacterium tuberculosis CarD


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å
  • R-Value Free: 0.243 
  • R-Value Work: 0.215 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Crystal structure of Mycobacterium tuberculosis CarD, an essential RNA polymerase binding protein, reveals a quasidomain-swapped dimeric structural architecture

Kaur, G.Dutta, D.Thakur, K.G.

(2013) Proteins --: --

  • DOI: 10.1002/prot.24419
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Mycobacterium tuberculosis (Mtb) CarD is an essential transcriptional regulator that binds RNA polymerase and plays an important role in reprogramming transcription machinery under diverse stress conditions. Here, we report the crystal structure of C ...

    Mycobacterium tuberculosis (Mtb) CarD is an essential transcriptional regulator that binds RNA polymerase and plays an important role in reprogramming transcription machinery under diverse stress conditions. Here, we report the crystal structure of CarD at 2.3 Å resolution, that represents the first structural description of CarD/CdnL-Like family of proteins. CarD adopts an overall bi-lobed structural architecture where N-terminal domain resembles 'tudor-like' domain and C-terminal domain adopts a novel five helical fold that lacks the predicted leucine zipper structural motif. The structure reveals dimeric state of CarD resulting from β-strand swapping between the N-terminal domains of each individual subunits. The structure provides crucial insights into the possible mode(s) of CarD/RNAP interactions.


    Organizational Affiliation

    Structural Biology Laboratory, G. N. Ramachandran Protein Centre, CSIR-Institute of Microbial Technology, Chandigarh, 160036, India.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
RNA polymerase-binding transcription factor CarD
A
170Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv)Mutations: A162S
Gene Names: carD
Find proteins for P9WJG3 (Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv))
Go to UniProtKB:  P9WJG3
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
IOD
Query on IOD

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Download CCD File 
A
IODIDE ION
I
XMBWDFGMSWQBCA-UHFFFAOYSA-M
 Ligand Interaction
SO4
Query on SO4

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Download CCD File 
A
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
GOL
Query on GOL

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Download CCD File 
A
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å
  • R-Value Free: 0.243 
  • R-Value Work: 0.215 
  • Space Group: P 41 21 2
Unit Cell:
Length (Å)Angle (°)
a = 93.248α = 90.00
b = 93.248β = 90.00
c = 87.832γ = 90.00
Software Package:
Software NamePurpose
PHENIXrefinement
PDB_EXTRACTdata extraction
MOSFLMdata reduction
SOLVEphasing
MAR345dtbdata collection
SCALAdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2013-08-28 
  • Released Date: 2013-11-06 
  • Deposition Author(s): Kaur, G., Thakur, K.G.

Revision History 

  • Version 1.0: 2013-11-06
    Type: Initial release