2CXG

CYCLODEXTRIN GLYCOSYLTRANSFERASE COMPLEXED TO THE INHIBITOR ACARBOSE

• PDB DOI: https://doi.org/10.2210/pdb2CXG/pdb
• Entry: 2CXG supersedes: 1CXG

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


• Deposited: 1998-05-08 Released: 1998-10-14 
• Deposition Author(s): Strokopytov, B.V., Uitdehaag, J.C.M., Ruiterkamp, R., Dijkstra, B.W.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.50 Å
• R-Value Free: 0.230 
• R-Value Work: 0.182 
• R-Value Observed: 0.187 

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 76.69 kDa 
• Atom Count: 5,493 
• Modelled Residue Count: 686 
• Deposited Residue Count: 686 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
CYCLODEXTRIN GLYCOSYLTRANSFERASE	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, D	2		N/A
Glycosylation Resources
GlyTouCan:  G07411ON GlyCosmos:  G07411ON

Entity ID: 3
Molecule	Chains	Length	2D Diagram	Glycosylation	3D Interactions
alpha-D-quinovopyranose-(1-4)-alpha-D-glucopyranose	C	2		N/A
Glycosylation Resources
GlyTouCan:  G96906VH GlyCosmos:  G96906VH

Entity ID: 4
Molecule	Chains	Length	2D Diagram	Glycosylation	3D Interactions
alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose-(1-4)-alpha-D-glucopyranose	E	4		N/A
Glycosylation Resources
GlyTouCan:  G87171PZ GlyCosmos:  G87171PZ GlyGen:  G87171PZ

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
GLC	G [auth A]	alpha-D-glucopyranose C6 H12 O6 WQZGKKKJIJFFOK-DVKNGEFBSA-N
ACI	F [auth A]	6-AMINO-4-HYDROXYMETHYL-CYCLOHEX-4-ENE-1,2,3-TRIOL C7 H13 N O4 XPHOBMULWMGEBA-VZFHVOOUSA-N
CA	H [auth A], I [auth A]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N

Biologically Interesting Molecules (External Reference) 2 Unique

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

Entity ID: 4
ID	Chains	Name	Type/Class	2D Diagram	3D Interactions
PRD_900010	E	alpha-maltotetraose	Oligosaccharide / Substrate analog

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.50 Å
• R-Value Free: 0.230 
• R-Value Work: 0.182 
• R-Value Observed: 0.187 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 120.887	α = 90
b = 111.903	β = 90
c = 65.748	γ = 90

Software Package:

Software Name	Purpose
MADNES	data collection
BIOMOL	data reduction
TNT	refinement
MADNES	data reduction
BIOMOL	data scaling
TNT	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 1998-10-14 
Deposition Author(s): Strokopytov, B.V., Uitdehaag, J.C.M., Ruiterkamp, R., Dijkstra, B.W.
• This entry supersedes: 1CXG

Revision History  

• Version 1.0: 1998-10-14
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 2.0: 2017-10-25
  Changes: Atomic model, Derived calculations, Structure summary
• Version 2.1: 2018-04-18
  Changes: Data collection
• Version 3.0: 2020-07-29
  Type: Remediation
  Reason: Carbohydrate remediation
  Changes: Atomic model, Data collection, Derived calculations, Structure summary
• Version 3.1: 2023-08-09
  Changes: Database references, Refinement description, Structure summary