5PTI

STRUCTURE OF BOVINE PANCREATIC TRYPSIN INHIBITOR. RESULTS OF JOINT NEUTRON AND X-RAY REFINEMENT OF CRYSTAL FORM II

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.00 Å

    wwPDB Validation   3D Report Full Report


    This is version 1.4 of the entry. See complete history. 


    Literature

    Structure of bovine pancreatic trypsin inhibitor. Results of joint neutron and X-ray refinement of crystal form II

    Wlodawer, A., Walter, J., Huber, R., Sjolin, L.

    (1984) J Mol Biol 180: 301-329

    • DOI: 10.1016/s0022-2836(84)80006-6
    • Primary Citation of Related Structures:  
      5PTI

    • PubMed Abstract: 

      • The structure of form II crystals of bovine pancreatic trypsin inhibitor has been investigated by joint refinement of X-ray and neutron data. Crystallographic R factors for the final model were 0.200 for the X-ray data extending to 1 A resolution and 0.1 ...

      The structure of form II crystals of bovine pancreatic trypsin inhibitor has been investigated by joint refinement of X-ray and neutron data. Crystallographic R factors for the final model were 0.200 for the X-ray data extending to 1 A resolution and 0.197 for the 1.8 A neutron data. This model was strongly restrained, with 0.020 A root-mean-square (r.m.s.) departure of bond lengths from their ideal values and 0.019 A r.m.s. departure of planar groups from planarity. The resulting structure was very similar to that of crystal form I (r.m.s. deviation for main chain atoms was 0.40 A); nevertheless larger deviations were observed in particular regions of the chain. Twenty out of 63 ordered water molecules occupy similar positions (deviation less than 1 A) in both models. Eleven amide hydrogens were found to be protected from exchange after three months of soaking the crystals in deuterated mother liquor at pH 8.2. Their locations were in excellent agreement with the results obtained by two-dimensional nuclear magnetic resonance, but the rates of exchange are much lower in the crystalline state.

      Related Citations: 
      • Comparison of Two Highly Refined Structures of Bovine Pancreatic Trypsin Inhibitor
        Wlodawer, A., Deisenhofer, J., Huber, R.
        (1987) J Mol Biol 193: 145
      • Pancreatic Trypsin Inhibitor. A New Crystal Form and its Analysis
        Walter, J., Huber, R.
        (1983) J Mol Biol 167: 911
      Organizational Affiliation: 

      A.V. Shubnikov Institute of Crystallography, Russian Academy of Sciences, Leninski pr. 59, Moscow, 117333, Russia.



    Macromolecules
    Find similar proteins by: 
    (by identity cutoff)  |  Structure
    Entity ID: 1
    MoleculeChainsSequence LengthOrganismDetailsImage
    TRYPSIN INHIBITOR A58Bos taurusMutation(s): 0 
    Find proteins for P00974 (Bos taurus)
    Explore P00974 
    Go to UniProtKB:  P00974
    Protein Feature View
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    • Reference Sequence
    Small Molecules
    Ligands 2 Unique
    IDChainsName / Formula / InChI Key2D Diagram3D Interactions
    PO4
    Query on PO4
    Download Ideal Coordinates CCD File 
    A
    		PHOSPHATE ION
    O4 P
    NBIIXXVUZAFLBC-UHFFFAOYSA-K    		 Ligand Interaction
    UNX
    Query on UNX
    Download Ideal Coordinates CCD File 
    A
    		UNKNOWN ATOM OR ION
    X
    		 Ligand Interaction
    Experimental Data & Validation

    Experimental Data

    • Method: X-RAY DIFFRACTION
    • Resolution: 1.00 Å
    • Space Group: P 21 21 21
    Unit Cell:
    Length ( Å )Angle ( ˚ )
    a = 74.1α = 90
    b = 23.4β = 90
    c = 28.9γ = 90

    Structure Validation

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    Entry History 

    Deposition Data

    Revision History 

    • Version 1.0: 1984-10-29
      Type: Initial release
    • Version 1.1: 2008-03-27
      Changes: Version format compliance
    • Version 1.2: 2011-07-13
      Changes: Version format compliance
    • Version 1.3: 2011-07-27
      Changes: Atomic model, Data collection
    • Version 1.4: 2018-10-24
      Changes: Data collection, Other, Structure summary