1GOI

Crystal structure of the D140N mutant of chitinase B from Serratia marcescens at 1.45 A resolution


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.45 Å
  • R-Value Free: 0.220 
  • R-Value Observed: 0.160 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structure of the D140N Mutant of Chitinase B from Serratia Marcescens at 1.45 A Resolution.

Kolstad, G.Synstad, B.Eijsink, V.G.H.Van Aalten, D.M.F.

(2002) Acta Crystallogr D Biol Crystallogr 58: 377

  • DOI: 10.1107/s0907444901018972
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • The crystal structure of the inactive D140N mutant of Serratia marcescens was refined to 1.45 A resolution. The structure of the mutant was essentially identical to that of the wild type, with the exception of a rotation of Asp142 in the catalytic ce ...

    The crystal structure of the inactive D140N mutant of Serratia marcescens was refined to 1.45 A resolution. The structure of the mutant was essentially identical to that of the wild type, with the exception of a rotation of Asp142 in the catalytic centre. In the mutant, this residue interacts with the catalytic acid (Glu144) and not with residue 140 as in the wild type. Thus, the 500-fold decrease in activity in the D140N mutant seems to be largely mediated by an effect on Asp142, confirming the crucial role of the latter residue in catalysis.


    Related Citations: 
    • Structural Insights Into the Catalytic Mechansim of a Family 18 Exo-Chitinase
      Van Aalten, D.M.F., Komander, D., Synstad, B., Gaseidnes, S., Peter, M.G., Eijsink, V.G.H.
      (2001) Proc Natl Acad Sci U S A 16: 8979
    • Structure of a Two-Domain Chitotriosidase from Serratia Marcescens at 1.9 A Resolution
      Van Aalten, D.M.F., Synstad, B., Brurberg, M.B., Hough, E., Riise, B., Eijsink, V.G.H., Wierenga, R.K.
      (2000) Proc Natl Acad Sci U S A 97: 5842

    Organizational Affiliation

    Department of Chemistry and Biotechnology, Agricultural University of Norway, 1432 As, Norway.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CHITINASE BA, B499Serratia marcescensMutation(s): 1 
Gene Names: chiB
EC: 3.2.1.14
Find proteins for P11797 (Serratia marcescens)
Explore P11797 
Go to UniProtKB:  P11797
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download CCD File 
A, B
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
GOL
Query on GOL

Download CCD File 
A, B
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.45 Å
  • R-Value Free: 0.220 
  • R-Value Observed: 0.160 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 55.904α = 90
b = 104.016β = 90
c = 186.524γ = 90
Software Package:
Software NamePurpose
SHELXL-97refinement
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2001-11-15
    Type: Initial release
  • Version 1.1: 2011-09-14
    Changes: Atomic model, Database references, Derived calculations, Non-polymer description, Other, Structure summary, Version format compliance