› 9cgt

X-ray diffraction
2.5Å resolution

STRUCTURE OF CYCLODEXTRIN GLYCOSYLTRANSFERASE COMPLEXED WITH A THIO-MALTOPENTAOSE

Released:
DOI: 10.2210/pdb9cgt/pdb
PDB entry 9cgt coloured by chain, front view.
PDB entry 9cgt coloured by chain, side view.
PDB entry 9cgt coloured by chain, top view.
Source organism: Niallia circulans
Primary publication:
Substrate binding to a cyclodextrin glycosyltransferase and mutations increasing the gamma-cyclodextrin production.
Parsiegla G, Schmidt AK, Schulz GE
Eur J Biochem 255 710-7 (1998)
PMID: 9738912

Function and Biology Details

Reaction catalysed: 
Cyclizes part of a (1->4)-alpha-D-glucan chain by formation of a (1->4)-alpha-D-glucosidic bond
Biochemical function:
Biological process:
Cellular component:
Sequence domains:
Structure domains:

Structure analysis Details

Assembly composition:
monomeric (preferred)
Assembly name:
PDBe Complex ID:
PDB-CPX-151845 (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecules (2 distinct):
Cyclomaltodextrin glucanotransferase Chain: A
Molecule details ›
Chain: A
Length: 684 amino acids
Theoretical weight: 74.51 KDa
Source organism: Niallia circulans
Expression system: Escherichia coli
UniProt:
  • Canonical: P30920 (Residues: 35-718; Coverage: 100%)
Sequence domains:
Structure domains:

Ligands and Environments

Carbohydrate polymer : NEW Components: Z9E, 4SG, GLC
Ligand Z9E 1 x Z9E
Ligand 4SG 2 x 4SG
Ligand GLC 2 x GLC
1 bound ligand:
Ligand CA 2 x CA
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: RIGAKU RU200
Spacegroup: P212121
Unit cell:
a: 94.6Å b: 104.7Å c: 113.6Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.147 0.147 0.182
Expression system: Escherichia coli

Quick links

Citations

8 review citations

Relationship of sequence and structure to specificity in the alpha-amylase family of enzymes.
MacGregor et al. (2001)
7 more

1 mention without citation

Defining structural and evolutionary modules in proteins: a community detection approach to explore sub-domain architecture.
Hleap et al. (2013)