6XKM

Room Temperature Structure of SARS-CoV-2 NSP10/NSP16 Methyltransferase in a Complex with SAM Determined by Fixed-Target Serial Crystallography


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.25 Å
  • R-Value Free: 0.213 
  • R-Value Work: 0.206 
  • R-Value Observed: 0.207 

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This is version 2.1 of the entry. See complete history


Literature

2'-O methylation of RNA cap in SARS-CoV-2 captured by serial crystallography.

Wilamowski, M.Sherrell, D.A.Minasov, G.Kim, Y.Shuvalova, L.Lavens, A.Chard, R.Maltseva, N.Jedrzejczak, R.Rosas-Lemus, M.Saint, N.Foster, I.T.Michalska, K.Satchell, K.J.F.Joachimiak, A.

(2021) Proc Natl Acad Sci U S A 118

  • DOI: 10.1073/pnas.2100170118
  • Primary Citation of Related Structures:  
    6XKM, 7JHE, 7JIB, 7JPE

  • PubMed Abstract: 
  • The genome of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) coronavirus has a capping modification at the 5'-untranslated region (UTR) to prevent its degradation by host nucleases. These modifications are performed by the Nsp10/14 and Nsp10/16 heterodimers using S-adenosylmethionine as the methyl donor ...

    The genome of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) coronavirus has a capping modification at the 5'-untranslated region (UTR) to prevent its degradation by host nucleases. These modifications are performed by the Nsp10/14 and Nsp10/16 heterodimers using S-adenosylmethionine as the methyl donor. Nsp10/16 heterodimer is responsible for the methylation at the ribose 2'-O position of the first nucleotide. To investigate the conformational changes of the complex during 2'-O methyltransferase activity, we used a fixed-target serial synchrotron crystallography method at room temperature. We determined crystal structures of Nsp10/16 with substrates and products that revealed the states before and after methylation, occurring within the crystals during the experiments. Here we report the crystal structure of Nsp10/16 in complex with Cap-1 analog ( m7 GpppA m2'-O ). Inhibition of Nsp16 activity may reduce viral proliferation, making this protein an attractive drug target.


    Organizational Affiliation

    Structural Biology Center, X-Ray Science Division, Argonne National Laboratory, Lemont, IL 60439.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
2'-O-methyltransferaseA301Severe acute respiratory syndrome coronavirus 2Mutation(s): 0 
Gene Names: rep1a-1b
EC: 2.1.1 (PDB Primary Data), 3.4.19.12 (UniProt), 3.4.22 (UniProt), 3.4.22.69 (UniProt), 2.7.7.48 (UniProt), 3.6.4.12 (UniProt), 3.6.4.13 (UniProt), 3.1.13 (UniProt), 3.1 (UniProt)
UniProt
Find proteins for P0DTD1 (Severe acute respiratory syndrome coronavirus 2)
Explore P0DTD1 
Go to UniProtKB:  P0DTD1
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Non-structural protein 10B142Severe acute respiratory syndrome coronavirus 2Mutation(s): 0 
Gene Names: rep1a-1b
EC: 3.4.19.12 (UniProt), 3.4.22 (UniProt), 3.4.22.69 (UniProt), 2.7.7.48 (UniProt), 3.6.4.12 (UniProt), 3.6.4.13 (UniProt), 3.1.13 (UniProt), 3.1 (UniProt), 2.1.1 (UniProt)
UniProt
Find proteins for P0DTD1 (Severe acute respiratory syndrome coronavirus 2)
Explore P0DTD1 
Go to UniProtKB:  P0DTD1
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SAM (Subject of Investigation/LOI)
Query on SAM

Download Ideal Coordinates CCD File 
D [auth A]S-ADENOSYLMETHIONINE
C15 H22 N6 O5 S
MEFKEPWMEQBLKI-FCKMPRQPSA-N
 Ligand Interaction
ZN (Subject of Investigation/LOI)
Query on ZN

Download Ideal Coordinates CCD File 
E [auth B], F [auth B]ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
CL
Query on CL

Download Ideal Coordinates CCD File 
C [auth A]CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.25 Å
  • R-Value Free: 0.213 
  • R-Value Work: 0.206 
  • R-Value Observed: 0.207 
  • Space Group: P 31 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 170.41α = 90
b = 170.41β = 90
c = 52.631γ = 120
Software Package:
Software NamePurpose
REFMACrefinement
PDB_EXTRACTdata extraction
MOLREPphasing
DIALSdata scaling
DIALSdata reduction

Structure Validation

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Ligand Structure Quality Assessment  



Entry History 

Revision History  (Full details and data files)

  • Version 1.0: 2020-07-08
    Type: Initial release
  • Version 2.0: 2020-08-26
    Changes: Advisory, Atomic model, Data collection, Database references, Derived calculations, Structure summary
  • Version 2.1: 2021-07-28
    Changes: Database references