Editing Plant virus (section)

=== Polyprotein processing ===

Polyprotein processing is adopted by 45% of plant viruses, such as the [[Potyviridae]] and [[Tymoviridae]].<ref name=":0">{{Cite journal |last1=Rodamilans |first1=Bernardo |last2=Shan |first2=Hongying |last3=Pasin |first3=Fabio |last4=García |first4=Juan Antonio |date=2018 |title=Plant Viral Proteases: Beyond the Role of Peptide Cutters |journal=Frontiers in Plant Science |volume=9 |page=666 |doi=10.3389/fpls.2018.00666 |pmid=29868107 |pmc=5967125 |doi-access=free}}</ref> The ribosome translates a single protein from the viral genome. Within the polyprotein is an enzyme (or enzymes) with [[proteinase]] function that is able to cleave the polyprotein into the various single proteins or just cleave away the protease, which can then cleave other polypeptides producing the mature proteins.