2EST

Crystallographic study of the binding of a trifluoroacetyl dipeptide anilide inhibitor with elastase

• PDB DOI: https://doi.org/10.2210/pdb2EST/pdb

• Classification: HYDROLASE/HYDROLASE INHIBITOR
• Organism(s): Sus scrofa
• Mutation(s): No 


• Deposited: 1986-03-24 Released: 1986-05-07 
• Deposition Author(s): Sieker, L.C., Hughes, D.L.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.50 Å
• R-Value Observed: 
  0.210 (Depositor) 

Literature

Crystallographic study of the binding of a trifluoroacetyl dipeptide anilide inhibitor with elastase.

Hughes, D.L., Sieker, L.C., Bieth, J., Dimicoli, J.L.

(1982) J Mol Biol 162: 645-658

• PubMed: 6926029 
• DOI: https://doi.org/10.1016/0022-2836(82)90393-x
• Primary Citation of Related Structures:  
  2EST

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 26.48 kDa 
• Atom Count: 1,899 
• Modelled Residue Count: 240 
• Deposited Residue Count: 240 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
ELASTASE	A [auth E]	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 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
2Z5	B [auth E]	6-ammonio-N-(trifluoroacetyl)-L-norleucyl-N-[4-(trifluoromethyl)phenyl]-L-alaninamide C18 H23 F6 N4 O3 HGUBHDYUXLPGND-GWCFXTLKSA-O
SO4	C [auth E]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L

Biologically Interesting Molecules (External Reference) 1 Unique

Entity ID: 2
ID	Chains	Name	Type/Class	2D Diagram	3D Interactions
PRD_000418 (2Z5)	B [auth E]	Trifluoroacetyl dipeptide anilide inhibitor, TFA LYS ALA ANI	Peptide-like / Inhibitor

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.50 Å
• R-Value Observed: 0.210 (Depositor) 

Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 52.53	α = 90
b = 57.47	β = 90
c = 75.26	γ = 90

Software Package:

Software Name	Purpose
PROLSQ	refinement

Structure Validation

Entry History 

Deposition Data

• Released Date: 1986-05-07 
Deposition Author(s): Sieker, L.C., Hughes, D.L.

Revision History  

• Version 1.0: 1986-05-07
  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: 2024-02-14
  Changes: Data collection, Database references, Derived calculations, Other