Potyvirus helper component-proteinase and coat protein (CP) have coordinated functions in virus-host interactions and the same CP motif affects virus transmission and accumulation

aphidoidea coat proteins microbial proteins molecular genetics mouvement movement movimiento mutation nicotiana tabacum papa pathogens plant viruses pomme de terre potatoes potyvirus proteasas protease proteases solanum tuberosum tabac tabaco tobacco virus virus de las plantas viruses