1EAU | pdb_00001eau

NONPEPTIDIC INHIBITORS OF HUMAN LEUKOCYTE ELASTASE. 6. DESIGN OF A POTENT, INTRATRACHEALLY ACTIVE, PYRIDONE-BASED TRIFLUOROMETHYL KETONE

• PDB DOI: https://doi.org/10.2210/pdb1EAU/pdb

• Classification: HYDROLASE (SERINE PROTEASE)
• Organism(s): Sus scrofa
• Mutation(s): No 


• Deposited: 1994-11-22 Released: 1995-02-07 
• Deposition Author(s): Ceccarelli, C.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Work: 
  0.161 (Depositor), 0.152 (DCC) 
• R-Value Observed: 
  0.161 (Depositor) 

Literature

Nonpeptidic inhibitors of human leukocyte elastase. 6. Design of a potent, intratracheally active, pyridone-based trifluoromethyl ketone.

Bernstein, P.R., Gomes, B.C., Kosmider, B.J., Vacek, E.P., Williams, J.C.

(1995) J Med Chem 38: 212-215

• PubMed: 7837235 
• DOI: https://doi.org/10.1021/jm00001a028
• Primary Citation Related Structures: 
  1EAU


• PubMed Abstract: 
  

  Further modification of the 3-amino substituent in a trifluoromethyl ketone-based series of 3-amino-6-phenylpyridin-2-ones that had been optimized for oral activity led to analogs that were potent intratracheal inhibitors in a model of HLE-induced lung damage in the hamster. The best 3-amino substituent for intratracheal activity is [4-[N-[(4-chlorophenyl)sulfonyl]-carbamoyl]phenyl]sulfonyl. At a 30 min prechallenge interval, compound 9, which incorporates this substituent, had an ED50 of approximately 2 nmol/animal and, qualitatively, afforded a very similar dose-response relationship to that found with a peptidic trifluoromethyl ketone inhibitor, ICI 200,355.

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Organizational Affiliation: 
• Department of Medicinal Chemistry, ZENECA Pharmaceuticals, Wilmington, Delaware 19897.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 26.59 kDa 
• Atom Count: 1,992 
• Modeled Residue Count: 240 
• Deposited Residue Count: 240 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
PORCINE PANCREATIC ELASTASE	A	240	Sus scrofa	Mutation(s): 0  EC: 3.4.21.36
UniProt
Find proteins for P00772 (Sus scrofa) Explore P00772  Go to UniProtKB:  P00772

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
BDK	D [auth A]	2-[5-AMINO-6-OXO-2-(2-THIENYL)-1,6-DIHYDROPYRIMIDIN-1-YL)-N-[3,3-DIFLUORO -1-ISOPROPYL-2-OXO-3-(N-(2-MORPHOLINO ETHYL)CARBAMOYL]PROPYL]ACETAMIDE C23 H30 F2 N6 O5 S SZYHELVLDPKTOS-SFHVURJKSA-N
SO4	C [auth A]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L
NA	B [auth A]	SODIUM ION Na FKNQFGJONOIPTF-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Work:  0.161 (Depositor), 0.152 (DCC) 
• R-Value Observed: 0.161 (Depositor) 

Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 50.85	α = 90
b = 58.31	β = 90
c = 75.66	γ = 90

Software Package:

Software Name	Purpose
X-PLOR	model building
X-PLOR	refinement
X-PLOR	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 1995-02-07 
Deposition Author(s): Ceccarelli, C.

Revision History  

• Version 1.0: 1995-02-07
  Type: Initial release
  
• Version 1.1: 2008-03-03
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2024-06-05
  Changes: Data collection, Database references, Derived calculations, Other
• Version 1.4: 2024-10-30
  Changes: Structure summary