1SBH

SUBTILISIN BPN' 8397+1 (E.C. 3.4.21.14) MUTANT (M50F, N76D, G169A, Q206C, N218S, K256Y)

• PDB DOI: https://doi.org/10.2210/pdb1SBH/pdb

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


• Deposited: 1995-09-01 Released: 1995-12-07 
• Deposition Author(s): Kidd, R.D., Farber, G.K.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Free: 0.192 
• R-Value Work: 0.185 
• R-Value Observed: 0.185 

Literature

A weak calcium binding site in subtilisin BPN' has a dramatic effect on protein stability.

Kidd, R.D., Yennawar, H.P., Sears, P., Wong, C.H., Farber, G.K.

(1996) J Am Chem Soc 118: 1645-1650

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 27.66 kDa 
• Atom Count: 2,032 
• Modelled Residue Count: 275 
• Deposited Residue Count: 275 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
SUBTILISIN 8397+1	A	275	Bacillus amyloliquefaciens	Mutation(s): 6  Gene Names: 8397+1 EC: 3.4.21.62
UniProt
Find proteins for P00782 (Bacillus amyloliquefaciens) Explore P00782  Go to UniProtKB:  P00782

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CA	B [auth A], C [auth A]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
CSO	A	L-PEPTIDE LINKING	C3 H7 N O3 S		CYS

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Free: 0.192 
• R-Value Work: 0.185 
• R-Value Observed: 0.185 
• Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 41.56	α = 90
b = 79.53	β = 114.48
c = 37.25	γ = 90

Software Package:

Software Name	Purpose
X-PLOR	model building
X-PLOR	refinement
TEXSAN	data reduction
X-PLOR	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 1995-12-07 
Deposition Author(s): Kidd, R.D., Farber, G.K.

Revision History  

• Version 1.0: 1995-12-07
  Type: Initial release
  
• Version 1.1: 2008-03-03
  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, Other
• Version 1.4: 2024-10-23
  Changes: Data collection, Structure summary