2QN4

Structure and function study of rice bifunctional alpha-amylase/subtilisin inhibitor from Oryza sativa

• PDB DOI: https://doi.org/10.2210/pdb2QN4/pdb

• Classification: HYDROLASE INHIBITOR
• Organism(s): Oryza sativa Japonica Group
• Mutation(s): No 


• Deposited: 2007-07-18 Released: 2008-07-22 
• Deposition Author(s): Peng, W.Y., Lin, Y.H., Huang, Y.C., Guan, H.H., Hsieh, Y.C., Chen, C.J.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Free: 0.210 
• R-Value Work: 0.206 

Starting Model: experimental

Literature

Structure and Function Study of Rice Bifunctional Alpha-Amylase/Subtilisin Inhibitor from Oryza Sativa

Peng, W.Y., Lin, Y.H., Huang, Y.C., Guan, H.H., Hsieh, Y.C., Liu, M.Y., Chang, T., Chen, C.J.

To be published.

Biological Assembly 1  

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

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

Biological Assembly 2  

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

Biological assembly 2 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 42.89 kDa 
• Atom Count: 2,622 
• Modelled Residue Count: 318 
• Deposited Residue Count: 400 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Alpha-amylase/subtilisin inhibitor	A, B	200	Oryza sativa Japonica Group	Mutation(s): 0
UniProt
Find proteins for P29421 (Oryza sativa subsp. japonica) Explore P29421  Go to UniProtKB:  P29421

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Free: 0.210 
• R-Value Work: 0.206 
• Space Group: P 2₁ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 79.988	α = 90
b = 62.949	β = 90
c = 66.696	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): Peng, W.Y., Lin, Y.H., Huang, Y.C., Guan, H.H., Hsieh, Y.C., 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: 2024-11-06
  Changes: Structure summary