2J53

Solution Structure of GB1 domain Protein G and low and high pressure.


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 50 
  • Conformers Submitted: 
  • Selection Criteria: MINIMIZED AVERAGE 

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This is version 1.3 of the entry. See complete history


Literature

Pressure-Induced Changes in the Solution Structure of the Gb1 Domain of Protein G.

Wilton, D.J.Tunnicliffe, R.B.Kamatari, Y.O.Akasaka, K.Williamson, M.P.

(2008) Proteins 71: 1432

  • DOI: https://doi.org/10.1002/prot.21832
  • Primary Citation of Related Structures:  
    2J52, 2J53

  • PubMed Abstract: 

    The solution structure of the GB1 domain of protein G at a pressure of 2 kbar is presented. The structure was calculated as a change from an energy-minimised low-pressure structure using (1)H chemical shifts. Two separate changes can be characterised: a compression/distortion, which is linear with pressure; and a stabilisation of an alternative folded state. On application of pressure, linear chemical shift changes reveal that the backbone structure changes by about 0.2 A root mean square, and is compressed by about 1% overall. The alpha-helix compresses, particularly at the C-terminal end, and moves toward the beta-sheet, while the beta-sheet is twisted, with the corners closest to the alpha-helix curling up towards it. The largest changes in structure are along the second beta-strand, which becomes more twisted. This strand is where the protein binds to IgG. Curved chemical shift changes with pressure indicate that high pressure also populates an alternative structure with a distortion towards the C-terminal end of the helix, which is likely to be caused by insertion of a water molecule.


  • Organizational Affiliation

    Department of Molecular Biology and Biotechnology, University of Sheffield, Firth Court, Western Bank, Sheffield S10 2TN, United Kingdom.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
IMMUNOGLOBULIN G-BINDING PROTEIN G56Streptococcus sp.Mutation(s): 1 
UniProt
Find proteins for P06654 (Streptococcus sp. group G)
Explore P06654 
Go to UniProtKB:  P06654
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UniProt GroupP06654
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 50 
  • Conformers Submitted: 
  • Selection Criteria: MINIMIZED AVERAGE 

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2007-09-25
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2024-05-15
    Changes: Data collection, Database references, Other