1AQN | pdb_00001aqn

SUBTILISIN MUTANT 8324

• PDB DOI: https://doi.org/10.2210/pdb1AQN/pdb

• Classification: SERINE PROTEASE
• Organism(s): Bacillus amyloliquefaciens
• Expression System: Bacillus subtilis
• Mutation(s): Yes 


• Deposited: 1997-07-31 Released: 1998-01-14 
• Deposition Author(s): Whitlow, M., Howard, A.J., Wood, J.F.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å

Literature

Large increases in general stabilityfor subtilisin BPN' through incremental changes in the free energy of unfolding

Muralikrishna, P., Wickstrom, E.

To be published.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 27.71 kDa 
• Atom Count: 2,157 
• Modelled Residue Count: 275 
• Deposited Residue Count: 275 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
SUBTILISIN 8324	A	275	Bacillus amyloliquefaciens	Mutation(s): 7  EC: 3.4.21.62
UniProt
Find proteins for P00782 (Bacillus amyloliquefaciens) Explore P00782  Go to UniProtKB:  P00782

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
IPA	F [auth A], G [auth A]	ISOPROPYL ALCOHOL C3 H8 O KFZMGEQAYNKOFK-UHFFFAOYSA-N
CA	B [auth A], C [auth A]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N
UNX	D [auth A], E [auth A]	UNKNOWN ATOM OR ION X

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å

Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 41.64	α = 90
b = 79.45	β = 114.53
c = 37.26	γ = 90

Software Package:

Software Name	Purpose
XENGEN	data collection
XENGEN	data reduction
PROLSQ/PROFFT	model building
PROFFT	refinement
PROLSQ	refinement
XENGEN	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 1998-01-14 
Deposition Author(s): Whitlow, M., Howard, A.J., Wood, J.F.

Revision History  

• Version 1.0: 1998-01-14
  Type: Initial release
  
• Version 1.1: 2008-03-04
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2021-11-03
  Changes: Database references, Derived calculations
• Version 1.4: 2024-12-25
  Changes: Advisory, Data collection, Derived calculations, Structure summary