Biological Assembly 1  

 3D View: Structure | Ligand Interaction

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Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 4-mer - A2B1C 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: microscopy

Macromolecule Content

• Total Structure Weight: 162.52 
• Atom Count: 8647 
• Residue Count: 1087 
• Unique protein chains: 3

6NUR

SARS-Coronavirus NSP12 bound to NSP7 and NSP8 co-factors

• DOI: 10.2210/pdb6NUR/pdb
• EMDataResource: EMD-0520

• Classification: VIRAL PROTEIN
• Organism(s): Human SARS coronavirus
• Expression System: Spodoptera frugiperda, Escherichia coli BL21


• Deposited: 2019-02-01 Released: 2019-05-29 
• Deposition Author(s): Kirchdoerfer, R.N., Ward, A.B.
• Funding Organization(s): National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 3.10 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

Structure of the SARS-CoV nsp12 polymerase bound to nsp7 and nsp8 co-factors.

Kirchdoerfer, R.N., Ward, A.B.

(2019) Nat Commun 10: 2342-2342

• PubMed: 31138817 
• DOI: 10.1038/s41467-019-10280-3
• Structures With Same Primary Citation


• PubMed Abstract: 
  

Recent history is punctuated by the emergence of highly pathogenic coronaviruses such as SARS- and MERS-CoV into human circulation. Upon infecting host cells, coronaviruses assemble a multi-subunit RNA-synthesis complex of viral non-structural proteins (nsp) responsible for the replication and transcription of the viral genome. Here, we present the 3.1 Å resolution structure of the SARS-CoV nsp12 polymerase bound to its essential co-factors, nsp7 and nsp8, using single particle cryo-electron microscopy. nsp12 possesses an architecture common to all viral polymerases as well as a large N-terminal extension containing a kinase-like fold and is bound by two nsp8 co-factors. This structure illuminates the assembly of the coronavirus core RNA-synthesis machinery, provides key insights into nsp12 polymerase catalysis and fidelity and acts as a template for the design of novel antiviral therapeutics.

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Organizational Affiliation: 

Department of Integrative Structural and Computational Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, HZ-102, La Jolla, CA, 92037, USA.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
NSP12	A	955	Human SARS coronavirus	Mutation(s): 0  Gene Names: rep, 1a-1b EC: 3.4.19.12 (UniProt), 3.4.22.69 (UniProt), 3.4.22 (UniProt), 2.7.7.48 (UniProt), 3.6.4.12 (UniProt), 3.6.4.13 (UniProt), 2.1.1 (UniProt), 3.1.13 (UniProt), 3.1 (UniProt)
Find proteins for P0C6X7 (Human SARS coronavirus) Go to UniProtKB:  P0C6X7

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details
NSP8	B, D	198	Human SARS coronavirus	Mutation(s): 0  Gene Names: 1a EC: 3.4.19.12 (UniProt), 3.4.22.69 (UniProt), 3.4.22 (UniProt)
Find proteins for P0C6U8 (Human SARS coronavirus) Go to UniProtKB:  P0C6U8

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details
NSP7	C	84	Human SARS coronavirus	Mutation(s): 0  Gene Names: rep, 1a-1b EC: 3.4.19.12 (UniProt), 3.4.22.69 (UniProt), 3.4.22 (UniProt), 2.7.7.48 (UniProt), 3.6.4.12 (UniProt), 3.6.4.13 (UniProt), 2.1.1 (UniProt), 3.1.13 (UniProt), 3.1 (UniProt)
Find proteins for P0C6X7 (Human SARS coronavirus) Go to UniProtKB:  P0C6X7

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
ZN	A	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 3.10 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Structure Validation

Entry History & Funding Information

Deposition Data

• Deposited Date: 2019-02-01 
• Released Date: 2019-05-29 
Deposition Author(s): Kirchdoerfer, R.N., Ward, A.B.

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Funding Organization	Location	Grant Number
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)	United States	AI123498
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)	United States	AI127521

Revision History 

• Version 1.0: 2019-05-29
  Type: Initial release
  
• Version 1.1: 2019-06-12
  Changes: Data collection, Database references
• Version 1.2: 2019-12-18
  Changes: Author supporting evidence