1HJA | pdb_00001hja

LYS 18 VARIANT OF TURKEY OVOMUCOID INHIBITOR THIRD DOMAIN COMPLEXED WITH ALPHA-CHYMOTRYPSIN

• PDB DOI: https://doi.org/10.2210/pdb1HJA/pdb

• Classification: COMPLEX (HYDROLASE/INHIBITOR)
• Organism(s): Bos taurus, Meleagris gallopavo
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 1997-07-09 Released: 1998-01-14 
• Deposition Author(s): Ding, J.-H., James, M.N.G.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.30 Å
• R-Value Free: 
  0.246 (Depositor), 0.235 (DCC) 
• R-Value Work: 
  0.193 (Depositor), 0.194 (DCC) 
• R-Value Observed: 
  0.193 (Depositor) 

Starting Model: experimental

Literature

Crystal Structure of Lys18 Variant of Turkey Ovomucoid Inhibitor Third Domain Complexed with Alpha-Chymotrypsin at 2.3 A

Ding, J., Qasim, M.A., Laskowski Junior, M., James, M.N.G.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 4-mer - A1B1C1D1 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content 

• Total Structure Weight: 30.86 kDa 
• Atom Count: 2,237 
• Modeled Residue Count: 289 
• Deposited Residue Count: 292 
• Unique protein chains: 4

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
ALPHA-CHYMOTRYPSIN	A	13	Bos taurus	Mutation(s): 0  EC: 3.4.21.1
UniProt
Find proteins for P00767 (Bos taurus) Explore P00767  Go to UniProtKB:  P00767

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
ALPHA-CHYMOTRYPSIN	B	131	Bos taurus	Mutation(s): 0  EC: 3.4.21.1
UniProt
Find proteins for P00766 (Bos taurus) Explore P00766  Go to UniProtKB:  P00766

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
ALPHA-CHYMOTRYPSIN	C	97	Bos taurus	Mutation(s): 0  EC: 3.4.21.1
UniProt
Find proteins for P00766 (Bos taurus) Explore P00766  Go to UniProtKB:  P00766

Entity ID: 4
Molecule	Chains	Sequence Length	Organism	Details	Image
OVOMUCOID INHIBITOR	D [auth I]	51	Meleagris gallopavo	Mutation(s): 0
UniProt
Find proteins for P68390 (Meleagris gallopavo) Explore P68390  Go to UniProtKB:  P68390

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.30 Å
• R-Value Free:  0.246 (Depositor), 0.235 (DCC) 
• R-Value Work:  0.193 (Depositor), 0.194 (DCC) 
• R-Value Observed: 0.193 (Depositor) 

Space Group: P 6₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 103.47	α = 90
b = 103.47	β = 90
c = 47.12	γ = 120

Software Package:

Software Name	Purpose
XENGEN	data collection
XENGEN	data reduction
X-PLOR	model building
X-PLOR	refinement
XENGEN	data scaling
X-PLOR	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 1998-01-14 
Deposition Author(s): Ding, J.-H., James, M.N.G.

Revision History  

• Version 1.0: 1998-01-14
  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: 2016-06-01
  Changes: Database references
• Version 1.4: 2018-04-04
  Changes: Data collection, Other
• Version 1.5: 2023-08-09
  Changes: Database references, Refinement description
• Version 1.6: 2024-11-13
  Changes: Data collection, Structure summary