1JEA

ALTERED TOPOLOGY AND FLEXIBILITY IN ENGINEERED SUBTILISIN


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å

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:  1C9J, 1C9M, 1C9N, 1IAV

  • 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 ...

    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: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
SUBTILISIN
A
269Bacillus lentusEC: 3.4.21.62
Find proteins for P29600 (Bacillus lentus)
Go to UniProtKB:  P29600
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

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

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

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 53.400α = 90.00
b = 61.350β = 90.00
c = 75.150γ = 90.00
Software Package:
Software NamePurpose
PROLSQrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

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

Revision History 

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