1NES

STRUCTURE OF THE PRODUCT COMPLEX OF ACETYL-ALA-PRO-ALA WITH PORCINE PANCREATIC ELASTASE AT 1.65 ANGSTROMS RESOLUTION


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.65 Å
  • R-Value Work: 0.184 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structure of the product complex of acetyl-Ala-Pro-Ala with porcine pancreatic elastase at 1.65 A resolution.

Meyer Jr., E.F.Radhakrishnan, R.Cole, G.M.Presta, L.G.

(1986) J Mol Biol 189: 533-539

  • DOI: 10.1016/0022-2836(86)90322-0
  • Primary Citation of Related Structures:  
    1NES

  • PubMed Abstract: 
  • A single crystal of porcine pancreatic elastase was mounted in a thin-walled capillary and allowed to react with acetyl-Ala-Pro-Ala-paranitroanalide. Diffraction data to 1.65 A resolution were measured and the isomorphous structure was solved from the difference Fourier map ...

    A single crystal of porcine pancreatic elastase was mounted in a thin-walled capillary and allowed to react with acetyl-Ala-Pro-Ala-paranitroanalide. Diffraction data to 1.65 A resolution were measured and the isomorphous structure was solved from the difference Fourier map. The structure contains two surprises. Two molecules of the product: acetyl-Ala-Pro-Ala molecule are bound in the extended binding site. Both molecules are bound backwards with respect to the established mode of peptide binding.


    Related Citations: 
    • Misbehaving Macromolecules: Backwards Binding Ligands and Other Surprising Structures
      Meyer, E.F., Botos, I., Scapozza, L., Zhang, D.
      () To be published --: --
    • Effect of the 7-Amino Substituent on the Inhibitory Potency of Mechanism-Based Isocoumarin Inhibitors for Porcine Pancreatic and Human Neutrophil Elastases: A 1.85-Angstroms X-Ray Structure of the Complex between Porcine Pancreatic Elastase and 7-[(N-Tosylphenylalanyl)Amino]-4-Chloro-3-Methoxyisocoumarin
      Hernandez, M.A., Powers, J.C., Glinski, J., Oleksyszyn, J., Vijayalakshmi, J., Meyer Junior, E.F.
      (1992) J Med Chem 35: 1121
    • Complexed with 7-Amino-3-(2-Bromoethoxy)-4-Chloroisocoumarin as a Nonreactivatable Doubly Covalent Enzyme-Inhibitor Complex
      Vijayalakshmi, J., Meyer Junior, E.F., Kam, C.-M., Powers, J.C.
      (1991) Biochemistry 30: 2175
    • Reaction of Porcine Pancreatic Elastase with 7-Substituted 3-Alkoxy-4-Chloroisocoumarins: Design of Potent Inhibitors Using the Crystal Structure of the Complex Formed with 4-Chloro-3-Ethoxy-7-Guanidino-Isocoumarin
      Powers, J.C., Oleksyszyn, J., Narasimhan, S.L., Kam, C.-M., Radhakrishnan, R., Meyer Junior, E.F.
      (1990) Biochemistry 29: 3108
    • The 2.2-Angstrom Resolution X-Ray Crystal Structure of the Complex of Trypsin Inhibited by 4-Chloro-3-Ethoxy-7-Guanidinoisocoumarin: A Proposed Model of the Thrombin-Inhibitor Complex
      Chow, M.M., Meyer Junior, E.F., Bode, W., Kam, C.-M., Radhakrishnan, R., Vijayalakshmi, J., Powers, J.C.
      (1990) J Am Chem Soc 112: 7783
    • Human Leukocyte and Porcine Pancreatic Elastase: X-Ray Crystal Structures, Mechanism, Substrate Specificity, and Mechanism-Based Inhibitors
      Bode, W., Meyer Junior, E.F., Powers, J.C.
      (1989) Biochemistry 28: 1951
    • 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
    • Crystal Structures of the Complex of Porcine Pancreatic Elastase with Two Valine-Derived Benzoxazinone Inhibitors
      Radhakrishnan, R., Presta, L.G., Meyer Junior, E.F., Wildonger, R.
      (1987) J Mol Biol 198: 417
    • Crystal Structures of the Complex of Porcine Pancreatic Elastase with Two Valine-Derived Benzoxazinone Inhibitors
      Radhakrishnan, R., Presta, L.G., Meyer Junior, E.F., Wildonger, R.
      (1987) J Mol Biol 198: 417
    • Stereospecific Reaction of 3-Methoxy-4-Chloro-7-Amino-Isocoumarin with Crystalline Porcine Pancreatic Elastase
      Meyer Junior, E.F., Presta, L.G., Radhakrishnan, R.
      (1985) J Am Chem Soc 107: 4091

    Organizational Affiliation

    Department of Biochemistry, McGill University, 3655 Promenade Sir William Osler, Montreal, Quebec, Canada, H3G 1Y6. mike@bri.nrc.ca



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
ELASTASEA [auth E]240Sus scrofaMutation(s): 0 
Gene Names: CELA1ELA1
EC: 3.4.21.36
UniProt
Find proteins for P00772 (Sus scrofa)
Explore P00772 
Go to UniProtKB:  P00772
Protein Feature View
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  • Reference Sequence
  • Find similar proteins by:  Sequence   |   Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
ACETYL-ALA-PRO-ALAB [auth I], C [auth J]4N/AMutation(s): 0 
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download Ideal Coordinates CCD File 
ESULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
CA
Query on CA

Download Ideal Coordinates CCD File 
D [auth E]CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.65 Å
  • R-Value Work: 0.184 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 51.4α = 90
b = 58.2β = 90
c = 75.4γ = 90
Software Package:
Software NamePurpose
EREFrefinement

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1996-01-29
    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