1TRY

STRUCTURE OF INHIBITED TRYPSIN FROM FUSARIUM OXYSPORUM AT 1.55 ANGSTROMS


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.55 Å

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Structure of inhibited trypsin from Fusarium oxysporum at 1.55 A.

Rypniewski, W.R.Dambmann, C.von der Osten, C.Dauter, M.Wilson, K.S.

(1995) Acta Crystallogr.,Sect.D 51: 73-85

  • DOI: 10.1107/S0907444994009169

  • PubMed Abstract: 
  • The structure of trypsin from the fungus Fusarium oxysporum has been refined at 1.55 A resolution by restrained least-squares minimization to an R-factor of 14.4%. The data were recorded from a single-crystal on the X31 beamline at EMBL, Hamburg, usi ...

    The structure of trypsin from the fungus Fusarium oxysporum has been refined at 1.55 A resolution by restrained least-squares minimization to an R-factor of 14.4%. The data were recorded from a single-crystal on the X31 beamline at EMBL, Hamburg, using a locally developed image-plate scanner. The final model consists of 1557 protein atoms, 400 water molecules, one molecule of isopropanol and one monoisopropyl phosphoryl inhibitor group covalently bound to the catalytic Ser195. Comparison of the structure with bovine trypsin reveals significant differences in the active site and suggests a possible explanation for the difference in substrate specificity between the two enzymes. In F. oxysporum trypsin the specificity pocket is larger than in bovine trypsin. This explains the preference of F. oxysporum trypsin for the bulkier arginine over lysine and the reverse preference in bovine trypsin. The binding cavity on the C-terminal side of the substrate is more restricted in F. oxysporum trypsin than in mammalian and Streptomyces griseus trypsins, which explains the relative inactivity of F. oxysporum trypsin towards peptide-pNA substrate analogues as an unfavourable steric interaction between the side of the binding cavity and the para-nitroanilino group of peptide-pNA. The observed restriction of the binding cavity does not lead to a reduced catalytic activity compared to other trypsins.


    Related Citations: 
    • Evolutionary Divergence and Conservation of Trypsin
      Rypniewski, W.R.,Perrakis, A.,Vorgias, C.E.,Wilson, K.S.
      (1994) Protein Eng. 7: 57
    • The Sequence and X-Ray Structure of the Trypsin from Fusarium Oxysporum
      Rypniewski, W.R.,Hastrup, S.,Betzel, Ch.,Dauter, M.,Dauter, Z.,Papendorf, G.,Branner, S.,Wilson, K.S.
      (1993) Protein Eng. 6: 341


    Organizational Affiliation

    European Molecular Biology Laboratory, Hamburg, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
TRYPSIN
A
224Fusarium oxysporumMutation(s): 0 
EC: 3.4.21.4
Find proteins for P35049 (Fusarium oxysporum)
Go to UniProtKB:  P35049
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ISP
Query on ISP

Download SDF File 
Download CCD File 
A
PHOSPHORYLISOPROPANE
C3 H9 O4 P
QPPQHRDVPBTVEV-UHFFFAOYSA-N
 Ligand Interaction
IPA
Query on IPA

Download SDF File 
Download CCD File 
A
ISOPROPYL ALCOHOL
2-PROPANOL
C3 H8 O
KFZMGEQAYNKOFK-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.55 Å
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 33.300α = 90.00
b = 67.890β = 107.33
c = 39.790γ = 90.00
Software Package:
Software NamePurpose
PROLSQrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1996-01-01
    Type: Initial release
  • Version 1.1: 2008-03-03
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2017-11-29
    Type: Derived calculations, Other