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


  • 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 th ...

    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 --: --
    • 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
    • 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
    • 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
    • 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
    • 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
    • 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
    • Structure of Native Porcine Pancreatic Elastase at 1.65 Angstroms Resolution
      Meyer, E.,Cole, G.,Radhakrishnan, R.,Epp, O.
      (1988) Acta Crystallogr.,Sect.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
    • 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



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
ELASTASE
E
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
ACETYL-ALA-PRO-ALA
I, J
4N/AN/A
Protein Feature View is not available: No corresponding UniProt sequence found.
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
E
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
CA
Query on CA

Download SDF File 
Download CCD File 
E
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
ACE
Query on ACE
I, J
NON-POLYMERC2 H4 O

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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 = 51.400α = 90.00
b = 58.200β = 90.00
c = 75.400γ = 90.00
Software Package:
Software NamePurpose
EREFrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1996-01-29
    Type: Initial release
  • Version 1.1: 2008-03-03
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Atomic model, Database references, Derived calculations, Non-polymer description, Structure summary, Version format compliance