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 1.3 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: 10.1038/nsb0194-55
  • Primary Citation of Related Structures:  
    1ELC, 1ELB, 1ELA

  • 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 thu ...

    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.


    Related Citations: 
    • Interaction of the Peptide Cf3-Leu-Ala-Nh-C6H4-Cf3 (Tfla) with Porcine Pancreatic Elastase. X-Ray Studies at 1.8 Angstroms
      Li De La Sierra, I., Papamichael, E., Sakarelos, C., Dimicoli, J.-L., Prange, T.
      (1990) J Mol Recognit 3: 36
    • Structure of Native Porcine Pancreatic Elastase at 1.65 Angstroms Resolution
      Meyer, E., Cole, G., Radhakrishnan, R., Epp, O.
      (1988) Acta Crystallogr B 44: 26
    • Structure of the Product Complex of Acetyl-Ala-Pro-Ala with Porcine Pancreatic Elastase at 1.65 Angstroms Resolution
      Meyer, E., Radhakrishnan, R., Cole, G., Presta, L.G.
      (1986) J Mol Biol 189: 533
    • Crystallographic Study of the Binding of a Tri-Fluoroacetyl Dipeptide Anilide Inhibitor with Elastase
      Hughes, D.L., Diecker, L.C., Bieth, L.C., Dimicoli, J.-L.
      (1982) J Mol Biol 162: 645
    • The Indirect Mechanism of Action of the Trifluoroacetyl Peptides on Elastase
      Dimicoli, J.-L., Renaud, A., Bieth, J.
      (1980) Eur J Biochem 107: 423
    • The Atomic Structure of Crystalline Porcine Pancreatic Elastase at 2.5 Angstroms Resolution. Comparisons with the Structure of Alpha-Chymotrypsin
      Sawyer, L., Shotton, C.M., Campbell, J.W., Wendell, P.L., Muirhead, H., Watson, H.C., Diamond, R., Ladner, R.C.
      (1978) J Mol Biol 118: 137

    Organizational Affiliation

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



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
ELASTASEA240Sus scrofaMutation(s): 0 
Gene Names: CELA1ELA1
EC: 3.4.21.36
Find proteins for P00772 (Sus scrofa)
Explore P00772 
Go to UniProtKB:  P00772
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
0Z3
Query on 0Z3

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

Download CCD File 
A
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
Biologically Interesting Molecules (External Reference) 1 Unique
Entity ID: 2
IDChainsNameType/Class2D Diagram3D Interactions
PRD_000367 (0Z3)
Query on PRD_000367
ATRIFLUOROACETYL-L-PHENYLALANYL-P-ISOPROPYLANILIDPeptide-like /  Inhibitor

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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

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • 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