1ZU0

Crystal Structure of the liganded Chitin Oligasaccharide Binding Protein

• PDB DOI: https://doi.org/10.2210/pdb1ZU0/pdb

• Classification: SUGAR BINDING PROTEIN, SIGNALING PROTEIN
• Organism(s): Vibrio cholerae
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2005-05-28 Released: 2006-06-06 
• Deposition Author(s): Xu, S., Li, X., Roseman, R., Stock, A.M.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.20 Å
• R-Value Free: 0.206 
• R-Value Work: 0.176 
• R-Value Observed: 0.176 

Starting Model: experimental

Literature

Crystal structure of the liganded and unliganded periplasmic chitin oligosaccharide binding protein

Xu, S., Li, X., Roseman, R., Stock, A.M.

To be published.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 60.5 kDa 
• Atom Count: 5,003 
• Modelled Residue Count: 529 
• Deposited Residue Count: 529 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Chitin Oligosaccharide Binding Protein	A	529	Vibrio cholerae	Mutation(s): 0
UniProt
Find proteins for Q9KUA3 (Vibrio cholerae serotype O1 (strain ATCC 39315 / El Tor Inaba N16961)) Explore Q9KUA3  Go to UniProtKB:  Q9KUA3

Oligosaccharides

Help

Entity ID: 2
Molecule	Chains	Length	2D Diagram	Glycosylation	3D Interactions
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose	B	2		N/A
Glycosylation Resources
GlyTouCan:  G42666HT GlyCosmos:  G42666HT GlyGen:  G42666HT

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
MN	C [auth A]	MANGANESE (II) ION Mn WAEMQWOKJMHJLA-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.20 Å
• R-Value Free: 0.206 
• R-Value Work: 0.176 
• R-Value Observed: 0.176 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 60.484	α = 90
b = 86.827	β = 90
c = 95.854	γ = 90

Software Package:

Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
PHASER	phasing
CNS	refinement

Structure Validation

Entry History 

Deposition Data

• Released Date: 2006-06-06 
Deposition Author(s): Xu, S., Li, X., Roseman, R., Stock, A.M.

Revision History  

• Version 1.0: 2006-06-06
  Type: Initial release
  
• Version 1.1: 2008-04-30
  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, Structure summary
• Version 2.1: 2023-08-23
  Changes: Data collection, Database references, Refinement description, Structure summary
• Version 2.2: 2024-10-30
  Changes: Structure summary