Biological Assembly 1  

 3D View: Structure | Electron Density | Validation Report | Ligand Interaction

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 34.04 kDa 
• Atom Count: 2699 
• Modelled Residue Count: 317 
• Deposited Residue Count: 317 
• Unique protein chains: 1

1NPC

THE STRUCTURE OF NEUTRAL PROTEASE FROM BACILLUS CEREUS AT 0.2-NM RESOLUTION

• DOI: 10.2210/pdb1NPC/pdb

• Classification: HYDROLASE(METALLOPROTEINASE)
• Organism(s): Bacillus cereus
• Mutation(s): No 


• Deposited: 1992-01-08 Released: 1993-10-31 
• Deposition Author(s): Stark, W., Pauptit, R.A., Jansonius, J.N.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Observed: 0.175 

Literature

The structure of neutral protease from Bacillus cereus at 0.2-nm resolution.

Stark, W., Pauptit, R.A., Wilson, K.S., Jansonius, J.N.

(1992) Eur J Biochem 207: 781-791

• PubMed: 1633827 
• DOI: 10.1111/j.1432-1033.1992.tb17109.x
• Primary Citation of Related Structures:  
  1NPC


• PubMed Abstract: 
  

The crystal structure of the neutral protease from Bacillus cereus has been refined to an R factor of 17.5% at 0.2-nm resolution. The enzyme, an extracellular metalloendopeptidase, consists of two domains and binds one zinc and four calcium ions. The structure is very similar to that of thermolysin, with which the enzyme shares 73% amino-acid sequence identity. The active-site cleft between the two domains is wider in neutral protease than in thermolysin. This suggests the presence of a flexible hinge region between the two domains, which may assist enzyme action. The high-resolution analysis allows detailed examination of possible causes for the difference in thermostability between neutral protease and thermolysin.

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Related Citations: 

• Crystal Structure of Neutral Protease from Bacillus Cereus Refined at 3.0 Angstroms Resolution and Comparison with the Homologous But More Thermostable Enzyme Thermolysin
  Pauptit, R.A., Karlsson, R., Picot, D., Jenkins, J.A., Niklaus-Reimer, A., Jansonius, J.N.
  (1988) J Mol Biol 199: 525

• The Primary Structure of Bacillus Cereus Neutral Proteinase and Comparison with Thermolysin and Bacillus Subtilis Proteinase
  Sidler, W., Niederer, E., Suter, F., Zuber, H.
  (1986) Biol Chem Hoppe Seyler 367: 643

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Organizational Affiliation: 

Department of Structural Biology, University of Basel, Switzerland.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
NEUTRAL PROTEASE	A	317	Bacillus cereus	Mutation(s): 0  Gene Names: npr, nprC EC: 3.4.24.27 (PDB Primary Data), 3.4.24.28 (UniProt)
UniProt
Find proteins for P05806 (Bacillus cereus) Explore P05806  Go to UniProtKB:  P05806

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
ZN	F [auth A]	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N
CA	B [auth A], C [auth A], D [auth A], E [auth A]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Observed: 0.175 
• Space Group: P 6₅ 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 76.5	α = 90
b = 76.5	β = 90
c = 201	γ = 120

Software Package:

Software Name	Purpose
TNT	refinement

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 1992-01-08 
• Released Date: 1993-10-31 
Deposition Author(s): Stark, W., Pauptit, R.A., Jansonius, J.N.

Revision History  

• Version 1.0: 1993-10-31
  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: 2017-11-29
  Changes: Derived calculations, Other