1SUB

CALCIUM-INDEPENDENT SUBTILISIN BY DESIGN


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.75 Å
  • R-Value Observed: 0.148 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Calcium-independent subtilisin by design.

Gallagher, T.Bryan, P.Gilliland, G.L.

(1993) Proteins 16: 205-213

  • DOI: 10.1002/prot.340160207
  • Primary Citation of Related Structures:  
    1SUD, 1SUC, 1SUB

  • PubMed Abstract: 
  • A version of subtilisin BPN' lacking the high affinity calcium site (site A) has been produced through genetic engineering methods, and its crystal structure refined at 1.8 A resolution. This protein and the corresponding version containing the calcium A site are described and compared ...

    A version of subtilisin BPN' lacking the high affinity calcium site (site A) has been produced through genetic engineering methods, and its crystal structure refined at 1.8 A resolution. This protein and the corresponding version containing the calcium A site are described and compared. The deletion of residues 75-83 was made in the context of four site-specific replacements previously shown to stabilize subtilisin. The helix that in wild type is interrupted by the calcium binding loop, is continuous in the deletion mutant, with normal geometry. A few residues adjacent to the loop, principally those that were involved in calcium coordination, are repositioned and/or destabilized by the deletion. Because refolding is greatly facilitated by the absence of the Ca-loop, this protein offers a new vehicle for analysis and dissection of the folding reaction. This is among the largest internal changes to a protein to be described at atomic resolution.


    Organizational Affiliation

    Center for Advanced Research in Biotechnology, Maryland Biotechnology Institute, University of Maryland, Shady Grove 20850.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
SUBTILISIN BPN' CRB-S3A275Bacillus amyloliquefaciensMutation(s): 2 
Gene Names: apr
EC: 3.4.21.62
UniProt
Find proteins for P00782 (Bacillus amyloliquefaciens)
Explore P00782 
Go to UniProtKB:  P00782
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ACN
Query on ACN

Download Ideal Coordinates CCD File 
D [auth A]ACETONE
C3 H6 O
CSCPPACGZOOCGX-UHFFFAOYSA-N
 Ligand Interaction
CA
Query on CA

Download Ideal Coordinates CCD File 
B [auth A]CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
K
Query on K

Download Ideal Coordinates CCD File 
C [auth A]POTASSIUM ION
K
NPYPAHLBTDXSSS-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
CSD
Query on CSD
AL-PEPTIDE LINKINGC3 H7 N O4 SCYS
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.75 Å
  • R-Value Observed: 0.148 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 41.77α = 90
b = 79.52β = 114.97
c = 37.22γ = 90
Software Package:
Software NamePurpose
PROFFTrefinement

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1994-01-31
    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