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 1.5 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 Biol 6: 432-436

  • DOI: 10.1038/8235
  • Structures With Same Primary Citation

  • 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: 
    • Reassessment of acarbose as a transition state analogue inhibitor of cyclodextrin glycosyltransferase.
      Mosi, R., Sham, H., Uitdehaag, J.C., Ruiterkamp, R., Dijkstra, B.W., Withers, S.G.
      (1998) Biochemistry 37: 17192
    • 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
    • Crystallographic studies of the interaction of cyclodextrin glycosyltransferase from Bacillus circulans strain 251 with natural substrates and products.
      Knegtel, R.M., Strokopytov, B., Penninga, D., Faber, O.G., Rozeboom, H.J., Kalk, K.H., Dijkhuizen, L., Dijkstra, B.W.
      (1995) J Biol Chem 270: 29256
    • 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

    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 circulansMutation(s): 2 
Gene Names: cgt
EC: 2.4.1.19
Find proteins for P43379 (Bacillus circulans)
Go to UniProtKB:  P43379
Protein Feature View
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GLC
Query on GLC

Download CCD File 
A
ALPHA-D-GLUCOSE
C6 H12 O6
WQZGKKKJIJFFOK-DVKNGEFBSA-N
 Ligand Interaction
CA
Query on CA

Download CCD File 
A
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-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
b = 110.905β = 90
c = 67.593γ = 90
Software Package:
Software NamePurpose
MADNESSdata collection
BIOMOLdata reduction
TNTrefinement
MADNESSdata reduction
BIOMOLdata scaling
TNTphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1999-05-03
    Type: Initial release
  • Version 1.1: 2007-10-16
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2017-10-04
    Changes: Refinement description
  • Version 1.4: 2018-04-18
    Changes: Data collection
  • Version 1.5: 2019-11-06
    Changes: Data collection, Database references, Derived calculations