1BFK

CRYSTAL STRUCTURE OF SUBTILISIN CARLSBERG IN 40% ACETONITRILE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.247 
  • R-Value Work: 0.186 
  • R-Value Observed: 0.186 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Organic solvent binding to crystalline subtilisin1 in mostly aqueous media and in the neat solvents.

Schmitke, J.L.Stern, L.J.Klibanov, A.M.

(1998) Biochem Biophys Res Commun 248: 273-277

  • DOI: 10.1006/bbrc.1998.8937
  • Primary Citation of Related Structures:  
    1BFK, 1BFU

  • PubMed Abstract: 
  • The X-ray crystal structures of the protease subtilisin Carlsberg in 40% acetonitrile and in 20% dioxane have been determined to at least 2.3 A resolution, and their solvent binding patterns have been compared to those observed in the neat organic so ...

    The X-ray crystal structures of the protease subtilisin Carlsberg in 40% acetonitrile and in 20% dioxane have been determined to at least 2.3 A resolution, and their solvent binding patterns have been compared to those observed in the neat organic solvents. The structures of the protein in the two aqueous-organic mixtures are essentially the same as in pure water, acetonitrile, and dioxane. Interestingly, the enzyme-bound organic solvent molecules tend to congregate in the active site. Three of the five bound acetonitrile molecules observed in the structure of subtilisin in 40% acetonitrile are situated in the enzyme active site, as is the single enzyme-bound dioxane molecule observed in 20% dioxane (whose location is distinct from that of any bound acetonitrile molecule). Furthermore, the organic solvent molecules detected in the enzyme active site in the aqueous-organic mixtures are in the same locations as in the structures in the corresponding neat organic solvents.


    Organizational Affiliation

    Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts, 02139, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
SUBTILISIN CARLSBERGA274Bacillus licheniformisMutation(s): 0 
Gene Names: subCapr
EC: 3.4.21.62
Find proteins for P00780 (Bacillus licheniformis)
Explore P00780 
Go to UniProtKB:  P00780
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CCN
Query on CCN

Download CCD File 
A
ACETONITRILE
C2 H3 N
WEVYAHXRMPXWCK-UHFFFAOYSA-N
 Ligand Interaction
CA
Query on CA

Download CCD File 
A
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.30 Å
  • R-Value Free: 0.247 
  • R-Value Work: 0.186 
  • R-Value Observed: 0.186 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 79.038α = 90
b = 54.805β = 90
c = 53.928γ = 90
Software Package:
Software NamePurpose
AMoREphasing
X-PLORrefinement
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1998-10-28
    Type: Initial release
  • Version 1.1: 2008-03-03
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance