5KQR

Structure of NS5 methyltransferase from Zika virus bound to S-adenosylmethionine

• PDB DOI: https://doi.org/10.2210/pdb5KQR/pdb

• Classification: TRANSFERASE
• Organism(s): Zika virus
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2016-07-06 Released: 2016-09-14 
• Deposition Author(s): Jain, R., Coloma, J., Rajashankar, K.R., Aggarwal, A.K.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.33 Å
• R-Value Free: 0.189 
• R-Value Work: 0.170 
• R-Value Observed: 0.171 

Literature

Structures of NS5 Methyltransferase from Zika Virus.

Coloma, J., Jain, R., Rajashankar, K.R., Garcia-Sastre, A., Aggarwal, A.K.

(2016) Cell Rep 16: 3097-3102

• PubMed: 27633330 
• DOI: https://doi.org/10.1016/j.celrep.2016.08.091
• Primary Citation of Related Structures:  
  5KQR, 5KQS


• PubMed Abstract: 
  

  The Zika virus (ZIKV) poses a major public health emergency. To aid in the development of antivirals, we present two high-resolution crystal structures of the ZIKV NS5 methyltransferase: one bound to S-adenosylmethionine (SAM) and the other bound to SAM and 7-methyl guanosine diphosphate (7-MeGpp). We identify features of ZIKV NS5 methyltransferase that lend to structure-based antiviral drug discovery. Specifically, SAM analogs with functionalities on the Cβ atom of the methionine portion of the molecules that occupy the RNA binding tunnel may provide better specificity relative to human RNA methyltransferases.

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Organizational Affiliation: 

Department of Pharmacological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA.

Biological Assembly 1  

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

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

Macromolecule Content

• Total Structure Weight: 30.07 kDa 
• Atom Count: 2,380 
• Modelled Residue Count: 264 
• Deposited Residue Count: 268 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Methyltransferase	A	268	Zika virus	Mutation(s): 0
UniProt
Find proteins for A0A024B7W1 (Zika virus (isolate ZIKV/Human/French Polynesia/10087PF/2013)) Explore A0A024B7W1  Go to UniProtKB:  A0A024B7W1

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
SAM	B [auth A]	S-ADENOSYLMETHIONINE C15 H22 N6 O5 S MEFKEPWMEQBLKI-FCKMPRQPSA-N
PO4	C [auth A]	PHOSPHATE ION O4 P NBIIXXVUZAFLBC-UHFFFAOYSA-K
CL	D [auth A]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.33 Å
• R-Value Free: 0.189 
• R-Value Work: 0.170 
• R-Value Observed: 0.171 
• Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 72.65	α = 90
b = 78.137	β = 106.98
c = 45.375	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
HKL-2000	data reduction
HKL-2000	data scaling
Auto-Rickshaw	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2016-09-14 
Deposition Author(s): Jain, R., Coloma, J., Rajashankar, K.R., Aggarwal, A.K.

Revision History  

• Version 1.0: 2016-09-14
  Type: Initial release
  
• Version 1.1: 2017-01-04
  Changes: Database references
• Version 1.2: 2023-10-04
  Changes: Data collection, Database references, Refinement description