1ELC

Analogous inhibitors of elastase do not always bind analogously


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.75 Å
  • R-Value Work: 0.150 
  • R-Value Observed: 0.150 

wwPDB Validation   3D Report Full Report


This is version 1.4 of the entry. See complete history


Literature

Analogous inhibitors of elastase do not always bind analogously.

Mattos, C.Rasmussen, B.Ding, X.Petsko, G.A.Ringe, D.

(1994) Nat Struct Biol 1: 55-58

  • DOI: https://doi.org/10.1038/nsb0194-55
  • Primary Citation of Related Structures:  
    1ELA, 1ELB, 1ELC

  • PubMed Abstract: 

    It has been assumed that the structure of a single inhibitor complex is sufficient to define the available subsites of an enzyme that has a unique binding site and a uniquely defined mode for ligand binding--the specificity for these subsites can thus be probed by kinetic experiments. Elastase is an enzyme for which these traditional assumptions, which underlie such structural and kinetic studies, do not hold. Three new crystal structures of elastase complexed to chemically similar inhibitors with similar binding affinities reveal a diversity of binding modes as well as two new subsites on elastase. The existence of multiple binding sites and different binding modes for such similar inhibitors indicates that researchers must proceed with caution when using kinetics to map out protein subsites.


  • Organizational Affiliation

    Rosenstiel Basic Medical Sciences Research Center, Brandeis University, Waltham, Massachusetts 02254, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
ELASTASE240Sus scrofaMutation(s): 0 
EC: 3.4.21.36
UniProt
Find proteins for P00772 (Sus scrofa)
Explore P00772 
Go to UniProtKB:  P00772
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP00772
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
0Z3
Query on 0Z3

Download Ideal Coordinates CCD File 
B [auth A]6-ammonio-N-(trifluoroacetyl)-L-norleucyl-N-[4-(1-methylethyl)phenyl]-L-phenylalaninamide
C26 H34 F3 N4 O3
SKWCLCMPIGFAOR-VXKWHMMOSA-O
CA
Query on CA

Download Ideal Coordinates CCD File 
C [auth A]CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
Biologically Interesting Molecules (External Reference) 1 Unique
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.75 Å
  • R-Value Work: 0.150 
  • R-Value Observed: 0.150 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 51.2α = 90
b = 58β = 90
c = 75.46γ = 90
Software Package:
Software NamePurpose
X-PLORmodel building
X-PLORrefinement
X-PLORphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1994-04-30
    Type: Initial release
  • Version 1.1: 2008-03-03
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Atomic model, Database references, Derived calculations, Non-polymer description, Structure summary, Version format compliance
  • Version 1.3: 2012-12-12
    Changes: Other
  • Version 1.4: 2024-06-05
    Changes: Data collection, Database references, Derived calculations, Other