1W0P

Vibrio cholerae sialidase with alpha-2,6-sialyllactose

• PDB DOI: https://doi.org/10.2210/pdb1W0P/pdb

• Classification: HYDROLASE
• Organism(s): Vibrio cholerae
• Mutation(s): No 


• Deposited: 2004-06-09 Released: 2004-07-08 
• Deposition Author(s): Moustafa, I., Connaris, H., Taylor, M., Zaitsev, V., Wilson, J.C., Kiefel, M.J., von-Itzstein, M., Taylor, G.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.60 Å
• R-Value Work: 0.214 
• R-Value Observed: 0.214 

Biological Assembly 1  

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

Biological assembly 1 assigned by authors and generated by PQS (software)

Macromolecule Content

• Total Structure Weight: 86.36 kDa 
• Atom Count: 6,452 
• Modelled Residue Count: 753 
• Deposited Residue Count: 781 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
SIALIDASE	A	781	Vibrio cholerae	Mutation(s): 0  EC: 3.2.1.18
UniProt
Find proteins for P0C6E9 (Vibrio cholerae serotype O1 (strain ATCC 39315 / El Tor Inaba N16961)) Explore P0C6E9  Go to UniProtKB:  P0C6E9

Small Molecules

Ligands 4 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
SIA	H [auth A]	N-acetyl-alpha-neuraminic acid C11 H19 N O9 SQVRNKJHWKZAKO-YRMXFSIDSA-N
TRS	G [auth A]	2-AMINO-2-HYDROXYMETHYL-PROPANE-1,3-DIOL C4 H12 N O3 LENZDBCJOHFCAS-UHFFFAOYSA-O
GOL	B [auth A]	GLYCEROL C3 H8 O3 PEDCQBHIVMGVHV-UHFFFAOYSA-N
CA	C [auth A], D [auth A], E [auth A], F [auth A]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N

Binding Affinity Annotations
ID	Source	Binding Affinity
SIA	Binding MOAD:  1W0P	Kd: 3.00e+4 (nM) from 1 assay(s)

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.60 Å
• R-Value Work: 0.214 
• R-Value Observed: 0.214 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 70.31	α = 90
b = 74.91	β = 90
c = 151.615	γ = 90

Software Package:

Software Name	Purpose
CNS	refinement

Structure Validation

Entry History 

Deposition Data

• Released Date: 2004-07-08 
Deposition Author(s): Moustafa, I., Connaris, H., Taylor, M., Zaitsev, V., Wilson, J.C., Kiefel, M.J., von-Itzstein, M., Taylor, G.

Revision History  

• Version 1.0: 2004-07-08
  Type: Initial release
  
• Version 1.1: 2015-04-15
  Changes: Database references, Derived calculations, Non-polymer description, Other, Version format compliance
• Version 1.2: 2020-07-29
  Type: Remediation
  Reason: Carbohydrate remediation
  Changes: Data collection, Derived calculations, Other, Structure summary