8JN0 | pdb_00008jn0

N/F domain of alkaline amylase Amy703

• PDB DOI: https://doi.org/10.2210/pdb8JN0/pdb

• Classification: HYDROLASE
• Organism(s): Alkalihalophilus pseudofirmus
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2023-06-05 Released: 2023-12-13 
• Deposition Author(s): Xiang, L., Zhang, G., Zhou, J.
• Funding Organization(s): National Natural Science Foundation of China (NSFC)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.23 Å
• R-Value Free: 
  0.223 (Depositor), 0.220 (DCC) 
• R-Value Work: 
  0.201 (Depositor), 0.200 (DCC) 
• R-Value Observed: 
  0.202 (Depositor) 

Starting Model: in silico

Literature

Truncation of N-terminus domain of alkaline a-amylase to form a unique dimer leads to improved activity and stability and decreased calcium ion dependence

Xiang, L., Zhang, G., Zhou, J.

To be published.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: gel filtration

Macromolecule Content 

• Total Structure Weight: 10.4 kDa 
• Atom Count: 843 
• Modeled Residue Count: 89 
• Deposited Residue Count: 89 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Alpha-amylase	A	89	Alkalihalophilus pseudofirmus	Mutation(s): 0  Gene Names: amy
UniProt
Find proteins for A0A023I4U3 (Alkalihalophilus pseudofirmus) Explore A0A023I4U3  Go to UniProtKB:  A0A023I4U3

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.23 Å
• R-Value Free:  0.223 (Depositor), 0.220 (DCC) 
• R-Value Work:  0.201 (Depositor), 0.200 (DCC) 
• R-Value Observed: 0.202 (Depositor) 

Space Group: P 6₅

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 45.045	α = 90
b = 45.045	β = 90
c = 91.378	γ = 120

Software Package:

Software Name	Purpose
PHENIX	refinement
HKL-3000	data reduction
HKL-3000	data scaling
PHENIX	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2023-12-13 
Deposition Author(s): Xiang, L., Zhang, G., Zhou, J.

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Funding Organization	Location	Grant Number
National Natural Science Foundation of China (NSFC)	China	31670069

Revision History  

• Version 1.0: 2023-12-13
  Type: Initial release