UPSK RNA

The Upstream pseudoknot (UPSK) domain is an RNA element found in the turnip yellow mosaic virus, beet virus Q,^[1] barley stripe mosaic virus^[2] and tobacco mosaic virus,^[3] which is thought to be needed for efficient transcription. Disruption of the pseudoknot structure gives rise to a 50% drop in transcription efficiency.^[4] This element acts in conjunction with the Tymovirus/Pomovirus tRNA-like 3' UTR element to enhance translation.^[5]

UPSK RNA
Predicted secondary structure and sequence conservation of UPSK
Identifiers
Symbol	UPSK
Rfam	RF00390
Other data
RNA type	Cis-reg
Domain(s)	Viruses
SO	SO:0000233
PDB structures	PDBe