1CGY

SITE DIRECTED MUTATIONS OF THE ACTIVE SITE RESIDUE TYROSINE 195 OF CYCLODEXTRIN GLYXOSYLTRANSFERASE FROM BACILLUS CIRCULANS STRAIN 251 AFFECTING ACTIVITY AND PRODUCT SPECIFICITY

• PDB DOI: https://doi.org/10.2210/pdb1CGY/pdb

• Classification: GLYCOSYLTRANSFERASE
• Organism(s): Niallia circulans
• Mutation(s): No 


• Deposited: 1994-08-05 Released: 1995-02-07 
• Deposition Author(s): Strokopytov, B.V., Dijkstra, B.W.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.50 Å
• R-Value Observed: 0.162 

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 75.71 kDa 
• Atom Count: 5,510 
• Modelled Residue Count: 686 
• Deposited Residue Count: 686 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
CYCLOMALTODEXTRIN GLUCANOTRANSFERASE	A	686	Niallia circulans	Mutation(s): 0  EC: 2.4.1.19
UniProt
Find proteins for P43379 (Niallia circulans) Explore P43379  Go to UniProtKB:  P43379

Oligosaccharides

Help

Entity ID: 2
Molecule	Chains	Length	2D Diagram	Glycosylation	3D Interactions
alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose	B, C, D	2		N/A
Glycosylation Resources
GlyTouCan:  G07411ON GlyCosmos:  G07411ON

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CA	E [auth A], F [auth A]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N

Biologically Interesting Molecules (External Reference) 1 Unique

Entity ID: 2
ID	Chains	Name	Type/Class	2D Diagram	3D Interactions
PRD_900001	B, C, D	alpha-maltose	Oligosaccharide / Nutrient

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.50 Å
• R-Value Observed: 0.162 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 120.184	α = 90
b = 110.701	β = 90
c = 66.207	γ = 90

Software Package:

Software Name	Purpose
PROLSQ	refinement
TNT	refinement

Structure Validation

Entry History 

Deposition Data

• Released Date: 1995-02-07 
Deposition Author(s): Strokopytov, B.V., Dijkstra, B.W.

Revision History  

• Version 1.0: 1995-02-07
  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, Database references, Derived calculations, Non-polymer description, Other, Structure summary