1O5L

Crystal structure of Transcriptional regulator (TM1171) from Thermotoga maritima at 2.30 A resolution

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.253 
  • R-Value Work: 0.195 
  • R-Value Observed: 0.197 

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This is version 1.3 of the entry. See complete history. 


Literature

On the use of DXMS to produce more crystallizable proteins: structures of the T. maritima proteins TM0160 and TM1171.

Spraggon, G., Pantazatos, D., Klock, H.E., Wilson, I.A., Woods, V.L., Lesley, S.A.

(2004) Protein Sci 13: 3187-3199

  • DOI: 10.1110/ps.04939904
  • Primary Citation of Related Structures:  
    1O5L, 1SJ5, 1VJL

  • PubMed Abstract: 

    • The structure of two Thermotoga maritima proteins, a conserved hypothetical protein (TM0160) and a transcriptional regulator (TM1171), have now been determined at 1.9 A and 2.3 A resolution, respectively, as part of a large-scale structural genomics project ...

    The structure of two Thermotoga maritima proteins, a conserved hypothetical protein (TM0160) and a transcriptional regulator (TM1171), have now been determined at 1.9 A and 2.3 A resolution, respectively, as part of a large-scale structural genomics project. Our first efforts to crystallize full-length versions of these targets were unsuccessful. However, analysis of the recombinant purified proteins using the technique of enhanced amide hydrogen/deuterium exchange mass spectroscopy (DXMS) revealed substantial regions of rapid amide deuterium hydrogen exchange, consistent with flexible regions of the structures. Based on these exchange data, truncations were designed to selectively remove the disordered C-terminal regions, and the resulting daughter proteins showed greatly enhanced crystallizability. Comparative DXMS analysis of full-length protein versus truncated forms demonstrated complete and exact preservation of the exchange rate profiles in the retained sequence, indicative of conservation of the native folded structure. This study presents the first structures produced with the aid of the DXMS method for salvaging intractable crystallization targets. The structure of TM0160 represents a new fold and highlights the use of this approach where any prior structural knowledge is absent. The structure of TM1171 represents an example where the lack of a substrate/cofactor may impair crystallization. The details of both structures are presented and discussed.

    Organizational Affiliation: 

    Joint Center for Structural Genomics, Genomics Institute of the Novartis Research Foundation, San Diego, California 92121, USA.



Macromolecules
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(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
transcriptional regulator, crp familyA213Thermotoga maritimaMutation(s): 0 
Gene Names: TM1171
UniProt
Find proteins for Q9X0Q3 (Thermotoga maritima (strain ATCC 43589 / DSM 3109 / JCM 10099 / NBRC 100826 / MSB8))
Explore Q9X0Q3 
Go to UniProtKB:  Q9X0Q3
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.253 
  • R-Value Work: 0.195 
  • R-Value Observed: 0.197 
  • Space Group: P 61 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 62.971α = 90
b = 62.971β = 90
c = 167.103γ = 120
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
SOLVEphasing
RESOLVEmodel building
REFMACrefinement
RESOLVEphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2003-10-07
    Type: Initial release
  • Version 1.1: 2008-04-26
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Advisory, Derived calculations, Version format compliance
  • Version 1.3: 2018-07-18
    Changes: Data collection, Database references