7MKY image
Deposition Date 2021-04-27
Release Date 2021-05-26
Last Version Date 2023-10-18
Entry Detail
PDB ID:
7MKY
Keywords:
RNA
Title:
SARS-CoV-2 frameshifting pseudoknot RNA
Biological Source:
Source Organism:
Severe acute respiratory syndrome coronavirus 2 (Taxon ID: 2697049)
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
1.31 Å
R-Value Free:
0.18
R-Value Work:
0.15
R-Value Observed:
0.15
Space Group:
C 1 2 1
7MKY validation report
Macromolecular Entities
Polymer Type:polyribonucleotide
Molecule:RNA (66-MER)
Chain IDs:A
Chain Length:66
Number of Molecules:1
Biological Source:Severe acute respiratory syndrome coronavirus 2
Ligand Molecules
K
MG
MPD
NA
NCO
Primary Citation
Crystal structure of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) frameshifting pseudoknot.
Rna 28 239 249 (2022)
PMID: 34845084 DOI: 10.1261/rna.078825.121

Abstact

SARS-CoV-2 produces two long viral protein precursors from one open reading frame using a highly conserved RNA pseudoknot that enhances programmed -1 ribosomal frameshifting. The 1.3 Å-resolution X-ray structure of the pseudoknot reveals three coaxially stacked helices buttressed by idiosyncratic base triples from loop residues. This structure represents a frameshift-stimulating state that must be deformed by the ribosome and exhibits base-triple-adjacent pockets that could be targeted by future small-molecule therapeutics.

Legend

Protein

Chemical

Disease

Primary Citation of related structures
7MKY
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