Experimental Data Snapshot

  • Resolution: 0.89 Å
  • R-Value Observed: 0.147 

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Crystal structure of Ser-22/Ile-25 form crambin confirms solvent, side chain substate correlations.

Yamano, A.Heo, N.H.Teeter, M.M.

(1997) J Biol Chem 272: 9597-9600

  • DOI: https://doi.org/10.1074/jbc.272.15.9597
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    It is not agreed that correlated positions of disordered protein side chains (substate correlations) can be deduced from diffraction data. The pure Ser-22/Ile-25 (SI form) crambin crystal structure confirms correlations deduced for the natural, mixed sequence form of crambin crystals. Physical separation of the mixed form into pure SI form and Pro-22/Leu-25 (PL form) crambin and the PL form crystal structure determination (Yamano, A., and Teeter, M. M. (1994) J. Biol. Chem. 269, 13956-13965) support the proposed (Teeter, M. M., Roe, S. M., and Heo, N. H. (1993) J. Mol. Biol. 230, 292-311) correlation model. Electron density of mixed form crambin crystals shows four possible pairs of side chain conformations for heterogeneous residue 22 and nearby Tyr-29 (2(2) = 4, two conformations for each of two side chains). One combination can be eliminated because of short van der Waals' contacts. However, only two alternates have been postulated to exist in mixed form crambin: Pro-22/Tyr-29A and Ser-22/Tyr-29B. In crystals of the PL form, Pro-22 and Tyr-29A are found to be in direct van der Waals' contact (Yamano, A., and Teeter, M. M. (1994) J. Biol. Chem. 269, 13956-13965). Comparison of the SI form structure with the mixed form electron density confirms that the fourth combination of side chains does not occur and that side chain correlations are mediated by water networks.

  • Organizational Affiliation

    X-ray Research Laboratory, Rigaku Corporation, 3-9-12 Matsubara, Akishima, 196 Tokyo, Japan.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
CRAMBIN (SER22/ILE25)46Crambe hispanica subsp. abyssinicaMutation(s): 0 
Gene Names: THI2
Find proteins for P01542 (Crambe hispanica subsp. abyssinica)
Explore P01542 
Go to UniProtKB:  P01542
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP01542
Sequence Annotations
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
Query on EOH

Download Ideal Coordinates CCD File 
C2 H6 O
Experimental Data & Validation

Experimental Data

  • Resolution: 0.89 Å
  • R-Value Observed: 0.147 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 40.759α = 90
b = 18.404β = 90.7
c = 22.273γ = 90
Software Package:
Software NamePurpose
LEHMANN-LARSENdata collection
TEXSANdata reduction
LEHMANN-LARSENdata reduction
TEXSANdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1997-08-12
    Type: Initial release
  • Version 1.1: 2008-03-04
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2016-10-19
    Changes: Other