1CXK

COMPLEX BETWEEN A MALTONONAOSE SUBSTRATE AND BACILLUS CIRCULANS STRAIN 251 CGTASE E257Q/D229N


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.09 Å
  • R-Value Free: 0.210 
  • R-Value Work: 0.158 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

X-ray structures along the reaction pathway of cyclodextrin glycosyltransferase elucidate catalysis in the alpha-amylase family.

Uitdehaag, J.C.Mosi, R.Kalk, K.H.van der Veen, B.A.Dijkhuizen, L.Withers, S.G.Dijkstra, B.W.

(1999) Nat.Struct.Mol.Biol. 6: 432-436

  • DOI: 10.1038/8235
  • Primary Citation of Related Structures:  1CXL

  • PubMed Abstract: 
  • Cyclodextrin glycosyltransferase (CGTase) is an enzyme of the alpha-amylase family, which uses a double displacement mechanism to process alpha-linked glucose polymers. We have determined two X-ray structures of CGTase complexes, one with an intact s ...

    Cyclodextrin glycosyltransferase (CGTase) is an enzyme of the alpha-amylase family, which uses a double displacement mechanism to process alpha-linked glucose polymers. We have determined two X-ray structures of CGTase complexes, one with an intact substrate at 2.1 A resolution, and the other with a covalently bound reaction intermediate at 1.8 A resolution. These structures give evidence for substrate distortion and the covalent character of the intermediate and for the first time show, in atomic detail, how catalysis in the alpha-amylase family proceeds by the concerted action of all active site residues.


    Related Citations: 
    • Crystallographic Studies of the Interaction of Cyclodextrin Glycosyltransferase from Bacillus Circulans Strain 251 with Natural Substrates and Products
      Knegtel, R.M.A.,Strokopytov, B.,Penninga, D.,Faber, O.G.,Rozeboom, H.J.,Kalk, K.H.,Dijkhuizen, L.,Dijkstra, B.W.
      (1995) J.Biol.Chem. 270: 29256
    • Structure of Cyclodextrin Glycosyltransferase Complexed with a Maltononaose Inhibitor at 2.6 Angstrom Resolution. Implications for Product Specificity
      Strokopytov, B.,Knegtel, R.M.,Penninga, D.,Rozeboom, H.J.,Kalk, K.H.,Dijkhuizen, L.,Dijkstra, B.W.
      (1996) Biochemistry 35: 4241
    • Nucleotide Sequence and X-Ray Structure of Cyclodextrin Glycosyltransferase from Bacillus Circulans Strain 251 in a Maltose-Dependent Crystal Form
      Lawson, C.L.,Van Montfort, R.,Strokopytov, B.,Rozeboom, H.J.,Kalk, K.H.,De Vries, G.E.,Penninga, D.,Dijkhuizen, L.,Dijkstra, B.W.
      (1994) J.Mol.Biol. 236: 590
    • Reassessment of Acarbose as a Transition State Analogue Inhibitor of Cyclodextrin Glycosyltransferase
      Mosi, R.,Sham, H.,Uitdehaag, J.C.M.,Ruiterkamp, R.,Dijkstra, B.W.,Withers, S.G.
      (1998) Biochemistry 37: 17192


    Organizational Affiliation

    BIOSON Research Institute, University of Groningen, The Netherlands.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PROTEIN (CYCLODEXTRIN-GLYCOSYLTRANSFERASE)
A
686Bacillus circulansGene Names: cgt
EC: 2.4.1.19
Find proteins for P43379 (Bacillus circulans)
Go to UniProtKB:  P43379
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CA
Query on CA

Download SDF File 
Download CCD File 
A
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
GLC
Query on GLC

Download SDF File 
Download CCD File 
A
ALPHA-D-GLUCOSE
C6 H12 O6
WQZGKKKJIJFFOK-DVKNGEFBSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.09 Å
  • R-Value Free: 0.210 
  • R-Value Work: 0.158 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 117.124α = 90.00
b = 110.905β = 90.00
c = 67.593γ = 90.00
Software Package:
Software NamePurpose
MADNESSdata reduction
TNTrefinement
MADNESSdata collection
BIOMOLdata scaling
TNTphasing
BIOMOLdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1999-05-03
    Type: Initial release
  • Version 1.1: 2007-10-16
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2017-10-04
    Type: Refinement description