2F26

Crystal Structure of the Human Sialidase Neu2 E111Q-Q112E Double Mutant

• PDB DOI: https://doi.org/10.2210/pdb2F26/pdb

• Classification: HYDROLASE
• Organism(s): Homo sapiens
• Expression System: Escherichia coli BL21
• Mutation(s): Yes 


• Deposited: 2005-11-15 Released: 2006-11-21 
• Deposition Author(s): Chavas, L.M.G., Kato, R., Fusi, P., Tringali, C., Venerando, B., Tettamanti, G., Monti, E., Wakatsuki, S.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.58 Å
• R-Value Free: 0.220 
• R-Value Work: 0.209 

Literature

Crystal Structure of the Human Sialidase Neu2 E111Q-Q112E Double Mutant

Chavas, L.M.G., Kato, R., Fusi, P., Tringali, C., Venerando, B., Tettamanti, G., Monti, E., Wakatsuki, S.

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: 42.46 kDa 
• Atom Count: 3,133 
• Modelled Residue Count: 362 
• Deposited Residue Count: 382 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Sialidase 2	A	382	Homo sapiens	Mutation(s): 2  EC: 3.2.1.18
UniProt & NIH Common Fund Data Resources
Find proteins for Q9Y3R4 (Homo sapiens) Explore Q9Y3R4  Go to UniProtKB:  Q9Y3R4
PHAROS:  Q9Y3R4 GTEx:  ENSG00000115488

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
CL	B [auth A]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.58 Å
• R-Value Free: 0.220 
• R-Value Work: 0.209 
• Space Group: H 3

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 145.65	α = 90
b = 145.65	β = 90
c = 64.21	γ = 120

Software Package:

Software Name	Purpose
CNS	refinement
PDB_EXTRACT	data extraction
HKL-2000	data reduction
SCALEPACK	data scaling
MOLREP	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2006-11-21 
Deposition Author(s): Chavas, L.M.G., Kato, R., Fusi, P., Tringali, C., Venerando, B., Tettamanti, G., Monti, E., Wakatsuki, S.

Revision History  

• Version 1.0: 2006-11-21
  Type: Initial release
  
• Version 1.1: 2008-05-01
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2021-11-10
  Changes: Database references, Derived calculations
• Version 1.4: 2023-10-25
  Changes: Data collection, Refinement description