1KIT

VIBRIO CHOLERAE NEURAMINIDASE

• PDB DOI: https://doi.org/10.2210/pdb1KIT/pdb

• Classification: HYDROLASE
• Organism(s): Vibrio cholerae
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 1996-06-21 Released: 1997-06-05 
• Deposition Author(s): Taylor, G.L., Crennell, S.J., Garman, E.F., Vimr, E.R., Laver, W.G.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.30 Å
• R-Value Work: 0.170 

Literature

Crystal structure of Vibrio cholerae neuraminidase reveals dual lectin-like domains in addition to the catalytic domain.

Crennell, S., Garman, E., Laver, G., Vimr, E., Taylor, G.

(1994) Structure 2: 535-544

• PubMed: 7922030 
• DOI: https://doi.org/10.1016/s0969-2126(00)00053-8
• Primary Citation of Related Structures:  
  1KIT


• PubMed Abstract: 
  

  Vibrio cholerae neuraminidase is part of a mucinase complex which may function in pathogenesis by degrading the mucin layer of the gastrointestinal tract. The neuraminidase, which has been the target of extensive inhibitor studies, plays a subtle role in the pathology of the bacterium, by processing higher order gangliosides to GM1, the receptor for cholera toxin.

---

Organizational Affiliation: 

School of Biology and Biochemistry, University of Bath, UK.

Biological Assembly 1  

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 83.12 kDa 
• Atom Count: 6,560 
• Modelled Residue Count: 757 
• Deposited Residue Count: 757 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
SIALIDASE	A	757	Vibrio cholerae	Mutation(s): 0  Gene Names: NANH 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 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CA	B [auth A], C [auth A]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.30 Å
• R-Value Work: 0.170 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 72.3	α = 90
b = 78.9	β = 90
c = 164.5	γ = 90

Software Package:

Software Name	Purpose
TNT	refinement
DENZO	data reduction

Structure Validation

Entry History 

Deposition Data

• Released Date: 1997-06-05 
Deposition Author(s): Taylor, G.L., Crennell, S.J., Garman, E.F., Vimr, E.R., Laver, W.G.

Revision History  

• Version 1.0: 1997-06-05
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2024-02-14
  Changes: Data collection, Database references, Derived calculations, Other