1OKX

Binding structure of elastase inhibitor scyptolin A


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.260 
  • R-Value Work: 0.210 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Binding Structure of Elastase Inhibitor Scyptolin A

Matern, U.Schleberger, C.Jelakovic, S.Weckesser, J.Schulz, G.E.

(2003) Chem.Biol. 10: 997


  • PubMed Abstract: 
  • Natural bioactive compounds are of general interest to pharmaceutical research because they may be used as leads in drug development campaigns. Among them, scyptolin A and B from Scytonema hofmanni PCC 7110 are known to inhibit porcine pancreatic ela ...

    Natural bioactive compounds are of general interest to pharmaceutical research because they may be used as leads in drug development campaigns. Among them, scyptolin A and B from Scytonema hofmanni PCC 7110 are known to inhibit porcine pancreatic elastase, which in turn resembles the attractive drug target neutrophil elastase. The crystal structure of scyptolin A as bound to pancreatic elastase was solved at 2.8 A resolution. The inhibitor occupies the most prominent subsites S1 through S4 of the elastase and prevents a hydrolytic attack by covering the active center with its rigid ring structure. The observed binding structure may help to design potent elastase inhibitors.


    Organizational Affiliation

    Institut für Biologie II, Mikrobiologie, Albert-Ludwigs-Universität, Schänzlestrasse 1, D-79104 Freiburg im Breisgau, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
ELASTASE 1
A, B
240Sus scrofaGene Names: CELA1 (ELA1)
EC: 3.4.21.36
Find proteins for P00772 (Sus scrofa)
Go to Gene View: CELA1
Go to UniProtKB:  P00772
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
SCYPTOLIN A
C, D
8N/AN/A
Protein Feature View is not available: No corresponding UniProt sequence found.
Small Molecules
Biologically Interesting Molecules 1 Unique
IDChainsNameType/Class2D Diagram3D Interactions
PRD_000187
Query on PRD_000187
C,DSCYPTOLIN APolypeptide / Inhibitor

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Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.260 
  • R-Value Work: 0.210 
  • Space Group: P 6 2 2
Unit Cell:
Length (Å)Angle (°)
a = 155.890α = 90.00
b = 155.890β = 90.00
c = 91.030γ = 120.00
Software Package:
Software NamePurpose
XSCALEdata scaling
XDSdata reduction
MOLREPphasing
CNSrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2003-10-24
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Atomic model, Database references, Derived calculations, Non-polymer description, Structure summary, Version format compliance
  • Version 1.2: 2012-11-30
    Type: Other