Biological Assembly 1  

Global Symmetry: Dihedral - D3  (3D View)
Global Stoichiometry: Homo 6-mer - A6 

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

Biological Assembly Evidence: gel filtration

Macromolecule Content

• Total Structure Weight: 126.37 kDa 
• Atom Count: 8,386 
• Modelled Residue Count: 1,040 
• Deposited Residue Count: 1,110 
• Unique protein chains: 1

 7K1O

Crystal Structure of NSP15 Endoribonuclease from SARS CoV-2 in the Complex with Uridine-3',5'-Diphosphate

• PDB DOI:  https://doi.org/10.2210/pdb7K1O/pdb

• Classification: VIRAL PROTEIN
• Organism(s): Severe acute respiratory syndrome coronavirus 2
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2020-09-08 Released: 2020-09-23 
• Deposition Author(s): Kim, Y., Maltseva, N., Jedrzejczak, R., Endres, M., Welk, L., Chang, C., Michalska, K., Joachimiak, A., Center for Structural Genomics of Infectious Diseases (CSGID)
• Funding Organization(s): National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.40 Å
• R-Value Free: 0.242 
• R-Value Work: 0.207 
• R-Value Observed: 0.209 

Literature

Crystal Structure of NSP15 Endoribonuclease from SARS CoV-2 in the Complex with Uridine-3',5'-Diphosphate

Kim, Y., Maltseva, N., Jedrzejczak, R., Endres, M., Welk, L., Chang, C., Michalska, K., Joachimiak, A., Center for Structural Genomics of Infectious Diseases (CSGID)

To be published.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Uridylate-specific endoribonuclease	A, B, C	370	Severe acute respiratory syndrome coronavirus 2	Mutation(s): 0  Gene Names: rep, 1a-1b EC: 3.1 (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), 4.6.1 (UniProt), 2.1.1.57 (UniProt)
UniProt
Find proteins for P0DTD1 (Severe acute respiratory syndrome coronavirus 2) Explore P0DTD1  Go to UniProtKB:  P0DTD1

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
VQV (Subject of Investigation/LOI)	D [auth A], F [auth B], H [auth C]	1-(3,5-di-O-phosphono-alpha-L-xylofuranosyl)pyrimidine-2,4(1H,3H)-dione C9 H14 N2 O12 P2 ZPVPRWPOZBXDKD-ZAKLUEHWSA-N
EDO	E [auth A], G [auth B], I [auth C]	1,2-ETHANEDIOL C2 H6 O2 LYCAIKOWRPUZTN-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.40 Å
• R-Value Free: 0.242 
• R-Value Work: 0.207 
• R-Value Observed: 0.209 
• Space Group: C 2 2 2₁
• Diffraction Data: https://doi.org/10.18430/m37k1o

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 87.46	α = 90
b = 151.321	β = 90
c = 197.518	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
HKL-3000	data reduction
HKL-3000	data scaling
HKL-3000	phasing
MOLREP	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2020-09-23 
Deposition Author(s): Kim, Y., Maltseva, N., Jedrzejczak, R., Endres, M., Welk, L., Chang, C., Michalska, K., Joachimiak, A., Center for Structural Genomics of Infectious Diseases (CSGID)

---

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

Revision History  

• Version 1.0: 2020-09-23
  Type: Initial release