1CGT

STRUCTURE OF CYCLODEXTRIN GLYCOSYLTRANSFERASE REFINED AT 2.0 ANGSTROMS RESOLUTION


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Work: 0.166 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure of cyclodextrin glycosyltransferase refined at 2.0 A resolution.

Klein, C.Schulz, G.E.

(1991) J.Mol.Biol. 217: 737-750


  • PubMed Abstract: 
  • The previously reported structural model of cyclodextrin glycosyltransferase (EC 2.4.1.19) from Bacillus circulans has been improved. For this purpose the known sequence was built into an electron density map established by multiple isomorphous repla ...

    The previously reported structural model of cyclodextrin glycosyltransferase (EC 2.4.1.19) from Bacillus circulans has been improved. For this purpose the known sequence was built into an electron density map established by multiple isomorphous replacement and subsequent solvent-flattening at 2.5 A resolution. The resulting model was refined at 2.0 A resolution using a simulated annealing refinement method. Based on 70,171 independent reflections in the range 7.0 to 2.0 A resolution, a final R-factor of 17.6% was obtained with a model obeying standard geometry within 0.013 A in bond lengths and 2.7 degrees in bond angles. The final model consists of all 684 amino acid residues, two calcium ions and 588 solvent molecules.


    Related Citations: 
    • Molecular Cloning, Nucleotide Sequence and Expression in Escherichia Coli of the Beta-Cyclodextrin Glycosyltransferase Gene from Bacillus Circulans Strain No. 8
      Nitschke, L.,Heeger, K.,Bender, H.,Schulz, G.E.
      (1990) Appl.Microbiol.Biotechnol. 33: 542
    • Three-Dimensional Structure of Cyclodextrin Glycosyltransferase from Bacillus Circulans at 3.4 Angstroms Resolution
      Hofmann, B.E.,Bender, H.,Schulz, G.E.
      (1989) J.Mol.Biol. 209: 793
    • Engineering a Heavy Atom Derivative for the X-Ray Structure Analysis of Cyclodextrin Glycosyltransferase
      Klein, C.,Vogel, W.,Bender, H.,Schulz, G.E.
      (1990) Protein Eng. 4: 65


    Organizational Affiliation

    Institut für Organische Chemie und Biochemie der Universität, Freiburg, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CYCLODEXTRIN GLYCOSYL-TRANSFERASE
A
684Bacillus circulansEC: 2.4.1.19
Find proteins for P30920 (Bacillus circulans)
Go to UniProtKB:  P30920
Small Molecules
Ligands 1 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
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Work: 0.166 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 94.800α = 90.00
b = 104.700β = 90.00
c = 114.000γ = 90.00
Software Package:
Software NamePurpose
X-PLORmodel building
X-PLORphasing
X-PLORrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1994-01-31
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance