1HLE | pdb_00001hle

CRYSTAL STRUCTURE OF CLEAVED EQUINE LEUCOCYTE ELASTASE INHIBITOR DETERMINED AT 1.95 ANGSTROMS RESOLUTION

• PDB DOI: https://doi.org/10.2210/pdb1HLE/pdb

• Classification: HYDROLASE INHIBITOR(SERINE PROTEINASE)
• Organism(s): Equus caballus
• Mutation(s): No 


• Deposited: 1992-04-13 Released: 1994-01-31 
• Deposition Author(s): Baumann, U., Bode, W., Huber, R., Travis, J., Potempa, J.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.95 Å
• R-Value Work: 
  0.176 (Depositor) 
• R-Value Observed: 
  0.176 (Depositor) 

Literature

Crystal structure of cleaved equine leucocyte elastase inhibitor determined at 1.95 A resolution.

Baumann, U., Bode, W., Huber, R., Travis, J., Potempa, J.

(1992) J Mol Biology 226: 1207-1218

• PubMed: 1518052 
• DOI: https://doi.org/10.1016/0022-2836(92)91062-t
• Primary Citation Related Structures: 
  1HLE


• PubMed Abstract: 
  

  The crystal structure of active-site cleaved equine leucocyte elastase inhibitor, a member of the serpin superfamily, has been solved and refined to a crystallographic R-factor of 17.6% at 1.95 A resolution. Despite being an intracellular inhibitor with rather low sequence homology of 30% to human alpha 1-antichymotrypsin and alpha 1-proteinase inhibitor, the three-dimensional structures are very similar, with deviations only at the sites of insertions and few mobile secondary structure elements. The better resolution in comparison with the structures of other cleaved serpins allows a more precise description of the so-called R-state of the serpins.

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Organizational Affiliation: 
• Max-Planck-Institut für Biochemie, Martinsried bei München, Germany.

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Hetero 4-mer - A2B2 

Biological assembly 1 assigned by authors.

Macromolecule Content 

• Total Structure Weight: 42.64 kDa 
• Atom Count: 3,214 
• Modeled Residue Count: 376 
• Deposited Residue Count: 376 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
HORSE LEUKOCYTE ELASTASE INHIBITOR	A	345	Equus caballus	Mutation(s): 0
UniProt
Find proteins for P05619 (Equus caballus) Explore P05619  Go to UniProtKB:  P05619

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
HORSE LEUKOCYTE ELASTASE INHIBITOR	B	31	Equus caballus	Mutation(s): 0
UniProt
Find proteins for P05619 (Equus caballus) Explore P05619  Go to UniProtKB:  P05619

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CA	C [auth A]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.95 Å
• R-Value Work:  0.176 (Depositor) 
• R-Value Observed: 0.176 (Depositor) 

Space Group: I 2 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 121.37	α = 90
b = 103.57	β = 90
c = 80.93	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: 1994-01-31 
Deposition Author(s): Baumann, U., Bode, W., Huber, R., Travis, J., Potempa, J.

Revision History  

• Version 1.0: 1994-01-31
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2017-11-29
  Changes: Derived calculations, Other
• Version 1.4: 2024-11-13
  Changes: Data collection, Database references, Derived calculations, Structure summary