Tombusvirus 3' UTR region IV

Tombusvirus 3' UTR is an important cis-regulatory region of the  Tombus virus genome.

Tomato bushy stunt virus is the prototype member of the Tombusviridae family. The genome of this virus is positive sense single stranded RNA. Replication occurs via a negative strand RNA intermediate. In addition to viral proteins p33 and the RNA-dependent RNA polymerase p92, and unknown host factors, conserved and structural regions within the 3'untranslated region (3'UTR) are important for regulating genome replication. This 3' structural element contains a pseudoknot.