2FF4

Mycobacterium tuberculosis EmbR in complex with low affinity phosphopeptide


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.239 
  • R-Value Work: 0.215 
  • R-Value Observed: 0.216 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Molecular structure of EmbR, a response element of Ser/Thr kinase signaling in Mycobacterium tuberculosis.

Alderwick, L.J.Molle, V.Kremer, L.Cozzone, A.J.Dafforn, T.R.Besra, G.S.Futterer, K.

(2006) Proc Natl Acad Sci U S A 103: 2558-2563

  • DOI: 10.1073/pnas.0507766103
  • Primary Citation of Related Structures:  
    2FEZ, 2FF4

  • PubMed Abstract: 
  • Ser/Thr phosphorylation has emerged as a critical regulatory mechanism in a number of bacteria, including Mycobacterium tuberculosis. This problematic pathogen encodes 11 eukaryotic-like Ser/Thr kinases, yet few substrates or signaling targets have been characterized ...

    Ser/Thr phosphorylation has emerged as a critical regulatory mechanism in a number of bacteria, including Mycobacterium tuberculosis. This problematic pathogen encodes 11 eukaryotic-like Ser/Thr kinases, yet few substrates or signaling targets have been characterized. Here, we report the structure of EmbR (2.0 A), a putative transcriptional regulator of key arabinosyltransferases (EmbC, -A, and -B), and an endogenous substrate of the Ser/Thr-kinase PknH. EmbR presents a unique domain architecture: the N-terminal winged-helix DNA-binding domain forms an extensive interface with the all-helical central bacterial transcriptional activation domain and is positioned adjacent to the regulatory C-terminal forkhead-associated (FHA) domain, which mediates binding to a Thr-phosphorylated site in PknH. The structure in complex with a phospho-peptide (1.9 A) reveals a conserved mode of phospho-threonine recognition by the FHA domain and evidence for specific recognition of the cognate kinase. The present structures suggest hypotheses as to how EmbR might propagate the phospho-relay signal from its cognate kinase, while serving as a template for the structurally uncharacterized Streptomyces antibiotic regulatory protein family of transcription factors.


    Organizational Affiliation

    School of Biosciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, United Kingdom.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Probable regulatory protein embRA, B388Mycobacterium tuberculosis H37RvMutation(s): 0 
Gene Names: embRRv1267cMTCY50.15
UniProt
Find proteins for P9WGJ9 (Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv))
Explore P9WGJ9 
Go to UniProtKB:  P9WGJ9
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP9WGJ9
Protein Feature View
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  • Reference Sequence

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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
DNA repair protein RAD9C [auth E],
D [auth F]
9N/AMutation(s): 1 
UniProt
Find proteins for P14737 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P14737 
Go to UniProtKB:  P14737
Entity Groups  
UniProt GroupP14737
Protein Feature View
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  • Reference Sequence
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
TPO
Query on TPO
C [auth E],
D [auth F]
L-PEPTIDE LINKINGC4 H10 N O6 PTHR
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.90 Å
  • R-Value Free: 0.239 
  • R-Value Work: 0.215 
  • R-Value Observed: 0.216 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 162.39α = 90
b = 82.04β = 115.37
c = 81.08γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
XDSdata reduction
XDSdata scaling
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2006-01-24
    Type: Initial release
  • Version 1.1: 2008-05-01
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Advisory, Source and taxonomy, Version format compliance