1HPT

THREE-DIMENSIONAL STRUCTURE OF A RECOMBINANT VARIANT OF HUMAN PANCREATIC SECRETORY TRYPSIN INHIBITOR (KAZAL TYPE)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Work: 0.191 
  • R-Value Observed: 0.191 

wwPDB Validation   3D Report Full Report


This is version 1.4 of the entry. See complete history


Literature

Three-dimensional structure of a recombinant variant of human pancreatic secretory trypsin inhibitor (Kazal type).

Hecht, H.J.Szardenings, M.Collins, J.Schomburg, D.

(1992) J Mol Biol 225: 1095-1103

  • DOI: https://doi.org/10.1016/0022-2836(92)90107-u
  • Primary Citation of Related Structures:  
    1HPT

  • PubMed Abstract: 

    A modified version of the human pancreatic trypsin inhibitor (PSTI), generated in a protein-design project, has been crystallized in spacegroup P4(3) with lattice constants a = 40.15 A, c = 33.91 A. The structure has been solved by molecular replacement. Refinement of the structure by simulated annealing and conventional restrained least-squares yielded for 8.0 to 2.3 A data a final R-value of 19.1%. Differences to the known structures of porcine PSTI complexed with trypsinogen and modified human PSTI complexed with chymotrypsinogen occur at the flexible N-terminal part of the molecule. These differences are influenced by crystal packing, as are low temperature factors for the binding loop. The geometry of the binding loop is similar to the complexed structures.


  • Organizational Affiliation

    GBF (Gesellschaft für Biotechnologische Forschung) Department of Molecular Structure Research, Braunschweig, Germany.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
PANCREATIC SECRETORY TRYPSIN INHIBITOR (KAZAL TYPE) VARIANT 356Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for P00995 (Homo sapiens)
Explore P00995 
Go to UniProtKB:  P00995
PHAROS:  P00995
GTEx:  ENSG00000164266 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP00995
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Work: 0.191 
  • R-Value Observed: 0.191 
  • Space Group: P 43
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 40.15α = 90
b = 40.15β = 90
c = 33.91γ = 90
Software Package:
Software NamePurpose
X-PLORmodel building
X-PLORrefinement
X-PLORphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1993-10-31
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2024-06-05
    Changes: Data collection, Database references, Other
  • Version 1.4: 2024-10-16
    Changes: Structure summary