1JEA

ALTERED TOPOLOGY AND FLEXIBILITY IN ENGINEERED SUBTILISIN


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Observed: 0.149 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Engineered Bacillus lentus subtilisins having altered flexibility.

Graycar, T.Knapp, M.Ganshaw, G.Dauberman, J.Bott, R.

(1999) J Mol Biol 292: 97-109

  • DOI: 10.1006/jmbi.1999.3033
  • Primary Citation of Related Structures:  
    1IAV, 1C9N, 1C9M, 1C9J, 1JEA

  • PubMed Abstract: 
  • The three-dimensional structures of engineered variants of Bacillus lentus subtilisin having increased enzymatic activity, K27R/N87S/V104Y/N123S/T274A (RSYSA) and N76D/N87S/S103A/V104I (DSAI), were determined by X-ray crystallography. In addition to identifying changes in atomic position we report a method that identifies protein segments having altered flexibility ...

    The three-dimensional structures of engineered variants of Bacillus lentus subtilisin having increased enzymatic activity, K27R/N87S/V104Y/N123S/T274A (RSYSA) and N76D/N87S/S103A/V104I (DSAI), were determined by X-ray crystallography. In addition to identifying changes in atomic position we report a method that identifies protein segments having altered flexibility. The method utilizes a statistical analysis of variance to delineate main-chain temperature factors that represent significant departures from the overall variance between equivalent regions seen throughout the structure. This method reveals changes in main-chain mobility in both variants. Residues 125-127 have increased mobility in the RSYSA variant while residues 100-104 have decreased mobility in the DSAI variant. These segments are located at the substrate-binding site and changes in their mobility are believed to relate to the observed changes in proteolytic activity. The effect of altered crystal lattice contacts on segment flexibility becomes apparent when identical variants, determined in two crystal forms, are compared with the native enzyme.


    Related Citations: 
    • Using Structural Comparison as a Guide in Protein Engineering
      Bott, R., Dauberman, J., Caldwell, R., Mitchinson, C., Wilson, L., Schmidt, B., Simpson, C., Power, S., Lad, P., Sagar, I.H., Graycar, T., Estell, D.
      (1992) Ann N Y Acad Sci 672: 10

    Organizational Affiliation

    Genencor International, 925 Page Mill Road, Palo Alto, CA 94304, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
SUBTILISIN A269Lederbergia lentusMutation(s): 0 
EC: 3.4.21.62
Find proteins for P29600 (Bacillus lentus)
Explore P29600 
Go to UniProtKB:  P29600
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download Ideal Coordinates CCD File 
A
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
CA
Query on CA

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

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Observed: 0.149 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 53.4α = 90
b = 61.35β = 90
c = 75.15γ = 90
Software Package:
Software NamePurpose
PROLSQrefinement

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

  • Deposited Date: 1997-05-20 
  • Released Date: 1997-11-26 
  • Deposition Author(s): Bott, R.

Revision History  (Full details and data files)

  • Version 1.0: 1997-11-26
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance