7KGA

Crystal structure of a mosquito-borne flavivirus dumbbell RNA

PDB DOI: https://doi.org/10.2210/pdb7KGA/pdb
NAKB: 7KGA

Classification: RNA
Organism(s): Donggang virus
Mutation(s): No

Deposited: 2020-10-16 Released: 2021-06-23
Deposition Author(s): Akiyama, B.M., Graham, M.E., O'Donoghue, Z., Beckham, J.D., Kieft, J.S.
Funding Organization(s): National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 2.10 Å
R-Value Free: 0.259
R-Value Work: 0.228
R-Value Observed: 0.230

wwPDB Validation 3D Report Full Report

This is version 1.2 of the entry. See complete history.

Literature

Three-dimensional structure of a flavivirus dumbbell RNA reveals molecular details of an RNA regulator of replication.

Akiyama, B.M., Graham, M.E., O Donoghue, Z., Beckham, J.D., Kieft, J.S.

(2021) Nucleic Acids Res 49: 7122-7138

PubMed: 34133732 Search on PubMedSearch on PubMed Central
DOI: https://doi.org/10.1093/nar/gkab462
Primary Citation of Related Structures:
7KGA

PubMed Abstract:
Mosquito-borne flaviviruses (MBFVs) including dengue, West Nile, yellow fever, and Zika viruses have an RNA genome encoding one open reading frame flanked by 5' and 3' untranslated regions (UTRs). The 3' UTRs of MBFVs contain regions of high sequence conservation in structured RNA elements known as dumbbells (DBs). DBs regulate translation and replication of the viral RNA genome, functions proposed to depend on the formation of an RNA pseudoknot. To understand how DB structure provides this function, we solved the x-ray crystal structure of the Donggang virus DB to 2.1Å resolution and used structural modeling to reveal the details of its three-dimensional fold. The structure confirmed the predicted pseudoknot and molecular modeling revealed how conserved sequences form a four-way junction that appears to stabilize the pseudoknot. Single-molecule FRET suggests that the DB pseudoknot is a stable element that can regulate the switch between translation and replication during the viral lifecycle by modulating long-range RNA conformational changes.

Organizational Affiliation

Department of Biochemistry and Molecular Genetics, Aurora, CO 80045, USA.

Macromolecule Content

Total Structure Weight: 70.92 kDa
Atom Count: 4,306
Modelled Residue Count: 179
Deposited Residue Count: 180
Unique nucleic acid chains: 1

Macromolecules

Find similar nucleic acids by:

(by identity cutoff) | 3D Structure

Entity ID: 1
Molecule	Chains	Length	Organism	Image
RNA (90-MER)	A, B	90	Donggang virus
Sequence Annotations Expand
Reference Sequence

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
IRI Query on IRI Download Ideal Coordinates CCD File SDF format, chain AA [auth B] SDF format, chain BA [auth B] SDF format, chain C [auth A] SDF format, chain CA [auth B] SDF format, chain D [auth A] SDF format, chain DA [auth B] SDF format, chain E [auth A] SDF format, chain EA [auth B] SDF format, chain F [auth A] SDF format, chain FA [auth B] SDF format, chain G [auth A] SDF format, chain GA [auth B] SDF format, chain H [auth A] SDF format, chain HA [auth B] SDF format, chain I [auth A] SDF format, chain IA [auth B] SDF format, chain J [auth A] SDF format, chain JA [auth B] SDF format, chain K [auth A] SDF format, chain KA [auth B] SDF format, chain L [auth A] SDF format, chain LA [auth B] SDF format, chain M [auth A] SDF format, chain MA [auth B] SDF format, chain N [auth A] SDF format, chain NA [auth B] SDF format, chain O [auth A] SDF format, chain OA [auth B] SDF format, chain P [auth A] SDF format, chain PA [auth B] SDF format, chain Q [auth A] SDF format, chain QA [auth B] SDF format, chain R [auth A] SDF format, chain RA [auth B] SDF format, chain S [auth A] SDF format, chain SA [auth B] SDF format, chain T [auth A] SDF format, chain TA [auth B] SDF format, chain U [auth B] SDF format, chain V [auth B] SDF format, chain W [auth B] SDF format, chain X [auth B] SDF format, chain Y [auth B] SDF format, chain Z [auth B] MOL2 format, chain AA [auth B] MOL2 format, chain BA [auth B] MOL2 format, chain C [auth A] MOL2 format, chain CA [auth B] MOL2 format, chain D [auth A] MOL2 format, chain DA [auth B] MOL2 format, chain E [auth A] MOL2 format, chain EA [auth B] MOL2 format, chain F [auth A] MOL2 format, chain FA [auth B] MOL2 format, chain G [auth A] MOL2 format, chain GA [auth B] MOL2 format, chain H [auth A] MOL2 format, chain HA [auth B] MOL2 format, chain I [auth A] MOL2 format, chain IA [auth B] MOL2 format, chain J [auth A] MOL2 format, chain JA [auth B] MOL2 format, chain K [auth A] MOL2 format, chain KA [auth B] MOL2 format, chain L [auth A] MOL2 format, chain LA [auth B] MOL2 format, chain M [auth A] MOL2 format, chain MA [auth B] MOL2 format, chain N [auth A] MOL2 format, chain NA [auth B] MOL2 format, chain O [auth A] MOL2 format, chain OA [auth B] MOL2 format, chain P [auth A] MOL2 format, chain PA [auth B] MOL2 format, chain Q [auth A] MOL2 format, chain QA [auth B] MOL2 format, chain R [auth A] MOL2 format, chain RA [auth B] MOL2 format, chain S [auth A] MOL2 format, chain SA [auth B] MOL2 format, chain T [auth A] MOL2 format, chain TA [auth B] MOL2 format, chain U [auth B] MOL2 format, chain V [auth B] MOL2 format, chain W [auth B] MOL2 format, chain X [auth B] MOL2 format, chain Y [auth B] MOL2 format, chain Z [auth B]	AA [auth B] BA [auth B] C [auth A] CA [auth B] D [auth A] AA [auth B], BA [auth B], C [auth A], CA [auth B], D [auth A], DA [auth B], E [auth A], EA [auth B], F [auth A], FA [auth B], G [auth A], GA [auth B], H [auth A], HA [auth B], I [auth A], IA [auth B], J [auth A], JA [auth B], K [auth A], KA [auth B], L [auth A], LA [auth B], M [auth A], MA [auth B], N [auth A], NA [auth B], O [auth A], OA [auth B], P [auth A], PA [auth B], Q [auth A], QA [auth B], R [auth A], RA [auth B], S [auth A], SA [auth B], T [auth A], TA [auth B], U [auth B], V [auth B], W [auth B], X [auth B], Y [auth B], Z [auth B]	IRIDIUM HEXAMMINE ION H₁₈ Ir N₆ CGMAOQLDNKCXGK-UHFFFAOYSA-N		Interactions Focus chain AA [auth B] Focus chain BA [auth B] Focus chain C [auth A] Focus chain CA [auth B] Focus chain D [auth A] Focus chain DA [auth B] Focus chain E [auth A] Focus chain EA [auth B] Focus chain F [auth A] Focus chain FA [auth B] Focus chain G [auth A] Focus chain GA [auth B] Focus chain H [auth A] Focus chain HA [auth B] Focus chain I [auth A] Focus chain IA [auth B] Focus chain J [auth A] Focus chain JA [auth B] Focus chain K [auth A] Focus chain KA [auth B] Focus chain L [auth A] Focus chain LA [auth B] Focus chain M [auth A] Focus chain MA [auth B] Focus chain N [auth A] Focus chain NA [auth B] Focus chain O [auth A] Focus chain OA [auth B] Focus chain P [auth A] Focus chain PA [auth B] Focus chain Q [auth A] Focus chain QA [auth B] Focus chain R [auth A] Focus chain RA [auth B] Focus chain S [auth A] Focus chain SA [auth B] Focus chain T [auth A] Focus chain TA [auth B] Focus chain U [auth B] Focus chain V [auth B] Focus chain W [auth B] Focus chain X [auth B] Focus chain Y [auth B] Focus chain Z [auth B] Interactions & Density Focus chain AA [auth B] Focus chain BA [auth B] Focus chain C [auth A] Focus chain CA [auth B] Focus chain D [auth A] Focus chain DA [auth B] Focus chain E [auth A] Focus chain EA [auth B] Focus chain F [auth A] Focus chain FA [auth B] Focus chain G [auth A] Focus chain GA [auth B] Focus chain H [auth A] Focus chain HA [auth B] Focus chain I [auth A] Focus chain IA [auth B] Focus chain J [auth A] Focus chain JA [auth B] Focus chain K [auth A] Focus chain KA [auth B] Focus chain L [auth A] Focus chain LA [auth B] Focus chain M [auth A] Focus chain MA [auth B] Focus chain N [auth A] Focus chain NA [auth B] Focus chain O [auth A] Focus chain OA [auth B] Focus chain P [auth A] Focus chain PA [auth B] Focus chain Q [auth A] Focus chain QA [auth B] Focus chain R [auth A] Focus chain RA [auth B] Focus chain S [auth A] Focus chain SA [auth B] Focus chain T [auth A] Focus chain TA [auth B] Focus chain U [auth B] Focus chain V [auth B] Focus chain W [auth B] Focus chain X [auth B] Focus chain Y [auth B] Focus chain Z [auth B]