1CDG

NUCLEOTIDE SEQUENCE AND X-RAY STRUCTURE OF CYCLODEXTRIN GLYCOSYLTRANSFERASE FROM BACILLUS CIRCULANS STRAIN 251 IN A MALTOSE-DEPENDENT CRYSTAL FORM


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Observed: 0.164 

wwPDB Validation   3D Report Full Report


This is version 2.0 of the entry. See complete history


Literature

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: 590-600

  • DOI: 10.1006/jmbi.1994.1168
  • Primary Citation of Related Structures:  
    1CDG

  • PubMed Abstract: 
  • The cyclodextrin glycosyltransferase (CGTase, EC 2.4.1.19) gene from Bacillus circulans strain 251 was cloned and sequenced. It was found to code for a mature protein of 686 amino acid residues, showing 75% identity to the CGTase from B. circulans strain 8 ...

    The cyclodextrin glycosyltransferase (CGTase, EC 2.4.1.19) gene from Bacillus circulans strain 251 was cloned and sequenced. It was found to code for a mature protein of 686 amino acid residues, showing 75% identity to the CGTase from B. circulans strain 8. The X-ray structure of the CGTase was elucidated in a maltodextrin-dependent crystal form and refined against X-ray diffraction data to 2.0 A resolution. The structure of the enzyme is nearly identical to the CGTase from B. circulans strain 8. Three maltose binding sites are observed at the protein surface, two in domain E and one in domain C. The maltose-dependence of CGTase crystallization can be ascribed to the proximity of two of the maltose binding sites to intermolecular crystal contacts. The maltose molecules bound in the E domain interact with several residues implicated in a raw starch binding motif conserved among a diverse group of starch converting enzymes.


    Related Citations: 
    • Maltodextrin-Dependent Crystallization of Cyclomaltodextrin Glucanotransferase from Bacillus Circulans
      Lawson, C.L., Bergsma, J., Bruinenberg, P.M., De Vries, G., Dijkhuizen, L., Dijkstra, B.W.
      (1990) J Mol Biol 214: 807

    Organizational Affiliation

    Laboratory of Biophysical Chemistry, University of Groningen, The Netherlands.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
CYCLODEXTRIN GLYCOSYL-TRANSFERASEA686Niallia circulansMutation(s): 0 
Gene Names: cgt
EC: 2.4.1.19
UniProt
Find proteins for P43379 (Bacillus circulans)
Explore P43379 
Go to UniProtKB:  P43379
Protein Feature View
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  • Reference Sequence
Oligosaccharides

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Entity ID: 2
MoleculeChainsChain Length2D DiagramGlycosylation3D Interactions
alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranoseB, C, D2N/A Oligosaccharides Interaction
Glycosylation Resources
GlyTouCan:  G07411ON
GlyCosmos:  G07411ON
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CA
Query on CA

Download Ideal Coordinates CCD File 
E [auth A], F [auth A]CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
Biologically Interesting Molecules (External Reference) 1 Unique
Entity ID: 2
IDChainsNameType/Class2D Diagram3D Interactions
PRD_900001
Query on PRD_900001
B, C, Dalpha-maltoseOligosaccharide /  Nutrient Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Observed: 0.164 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 120.363α = 90
b = 110.935β = 90
c = 66.429γ = 90
Software Package:
Software NamePurpose
TNTrefinement

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1994-01-31
    Type: Initial release
  • Version 1.1: 2008-03-03
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Atomic model, Data collection, Derived calculations, Non-polymer description, Other, Structure summary