1HPT

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


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Work: 0.191 

wwPDB Validation 3D Report Full Report


This is version 1.2 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


  • 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 replacem ...

    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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PANCREATIC SECRETORY TRYPSIN INHIBITOR (KAZAL TYPE) VARIANT 3
A
56Homo sapiensMutation(s): 0 
Gene Names: SPINK1 (PSTI)
Find proteins for P00995 (Homo sapiens)
Go to Gene View: SPINK1
Go to UniProtKB:  P00995
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Work: 0.191 
  • Space Group: P 43
Unit Cell:
Length (Å)Angle (°)
a = 40.150α = 90.00
b = 40.150β = 90.00
c = 33.910γ = 90.00
Software Package:
Software NamePurpose
X-PLORmodel building
X-PLORrefinement
X-PLORphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1993-10-31
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance