2QN5

Crystal Structure and Functional Study of the Bowman-Birk Inhibitor from Rice Bran in Complex with Bovine Trypsin

• PDB DOI: https://doi.org/10.2210/pdb2QN5/pdb

• Classification: Hydrolase inhibitor/Hydrolase
• Organism(s): Oryza sativa, Bos taurus
• Mutation(s): No 


• Deposited: 2007-07-18 Released: 2008-07-22 
• Deposition Author(s): Li, H.T., Lin, Y.H., Guan, H.H., Hsieh, Y.C., Wang, A.H.J., Chen, C.J.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 3.00 Å
• R-Value Free: 
  0.322 (Depositor) 
• R-Value Work: 
  0.256 (Depositor), 0.260 (DCC) 

Starting Model: experimental

Literature

Crystal Structure and Functional Study of the Bowman-Birk Inhibitor from Rice Bran in Complex with Bovine Trypsin

Li, H.T., Lin, Y.H., Huang, Y.C., Guan, H.H., Hsieh, Y.C., Chang, T., Wang, A.H.J., Chen, C.J.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 2-mer - A1B1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 38.42 kDa 
• Atom Count: 2,620 
• Modelled Residue Count: 333 
• Deposited Residue Count: 356 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Bowman-Birk type bran trypsin inhibitor	A [auth B]	133	Oryza sativa	Mutation(s): 0
UniProt
Find proteins for Q0JR25 (Oryza sativa subsp. japonica) Explore Q0JR25  Go to UniProtKB:  Q0JR25

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Cationic trypsin	B [auth T]	223	Bos taurus	Mutation(s): 0  EC: 3.4.21.4
UniProt
Find proteins for P00760 (Bos taurus) Explore P00760  Go to UniProtKB:  P00760

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 3.00 Å
• R-Value Free:  0.322 (Depositor) 
• R-Value Work:  0.256 (Depositor), 0.260 (DCC) 

Space Group: P 4₃ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 69.653	α = 90
b = 69.653	β = 90
c = 158.169	γ = 90

Software Package:

Software Name	Purpose
Blu-Ice	data collection
CNS	refinement
HKL-2000	data reduction
HKL-2000	data scaling
CNS	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2008-07-22 
Deposition Author(s): Li, H.T., Lin, Y.H., Guan, H.H., Hsieh, Y.C., Wang, A.H.J., Chen, C.J.

Revision History  

• Version 1.0: 2008-07-22
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance
• Version 1.2: 2023-10-25
  Changes: Data collection, Database references, Refinement description
• Version 1.3: 2024-10-16
  Changes: Structure summary