4M4V

Structural evaluation R171L mutant of the aspergillus fumigatus kdnase (sialidase)

• PDB DOI: https://doi.org/10.2210/pdb4M4V/pdb

• Classification: HYDROLASE
• Organism(s): Aspergillus fumigatus Af293
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 2013-08-07 Released: 2014-09-17 
• Deposition Author(s): Telford, J.C., Taylor, G.L.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.84 Å
• R-Value Free: 0.194 
• R-Value Work: 0.154 
• R-Value Observed: 0.156 

Literature

Active site mutants of a fungal KDNase

Yeung, J.Y., Telford, J.C., S Shidmoossavee, F., Bennet, A.J., Taylor, G.L., Moore, M.M.

To be published.

Biological Assembly 1  

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

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

Biological Assembly 2  

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

Biological assembly 2 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 93.3 kDa 
• Atom Count: 7,253 
• Modelled Residue Count: 769 
• Deposited Residue Count: 844 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Extracellular sialidase/neuraminidase, putative	A, B	422	Aspergillus fumigatus Af293	Mutation(s): 1  Gene Names: AFUA_4G13800 EC: 3.2.1.18
UniProt
Find proteins for Q4WQS0 (Aspergillus fumigatus (strain ATCC MYA-4609 / CBS 101355 / FGSC A1100 / Af293)) Explore Q4WQS0  Go to UniProtKB:  Q4WQS0

Small Molecules

Ligands 4 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
DAN	C [auth A]	2-DEOXY-2,3-DEHYDRO-N-ACETYL-NEURAMINIC ACID C11 H17 N O8 JINJZWSZQKHCIP-UFGQHTETSA-N
GOL	D [auth A], H [auth A], I [auth B]	GLYCEROL C3 H8 O3 PEDCQBHIVMGVHV-UHFFFAOYSA-N
NO3	E [auth A], F [auth A], J [auth B], K [auth B]	NITRATE ION N O3 NHNBFGGVMKEFGY-UHFFFAOYSA-N
NA	G [auth A]	SODIUM ION Na FKNQFGJONOIPTF-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.84 Å
• R-Value Free: 0.194 
• R-Value Work: 0.154 
• R-Value Observed: 0.156 
• Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 75.88	α = 90
b = 57.97	β = 99.89
c = 94.64	γ = 90

Software Package:

Software Name	Purpose
MOSFLM	data reduction
SCALA	data scaling
REFMAC	refinement
PDB_EXTRACT	data extraction

Structure Validation

Entry History 

Deposition Data

• Released Date: 2014-09-17 
Deposition Author(s): Telford, J.C., Taylor, G.L.

Revision History  

• Version 1.0: 2014-09-17
  Type: Initial release
  
• Version 1.1: 2020-07-29
  Type: Remediation
  Reason: Carbohydrate remediation
  Changes: Data collection, Database references, Derived calculations
• Version 1.2: 2023-09-20
  Changes: Data collection, Database references, Refinement description, Structure summary