A wide variety of picorna-like viruses infecting hosts that range from algae, fungi, plants, insects, and mammals. thus, 3cl-pros have a long history of adaptation to virus infection cycles in a wide range of hosts [ 32 , 53 ]. plant viruses encoding 3cl-pros include members of the families secoviridae and potyviridae [ 81 ] as well as a proposed new family of plant picornaviruses exemplified by rice curl dwarf associated picornavirus [ 86 ]. although very diverse in their primary sequence, all 3cl-pros share a structural fold similar to that of chymotrypsin (a serine protease) and an active site composed of a catalytic triad that includes conserved histidine, aspartate (or glutamate), and cysteine (or occasionally serine) residues. the specificity of 3cl-pros is conferred by their sub –

HIGHLIGHTS

• who: C-like, proteases and Hélène, Sanfaçon from the Summerland Research and Development Centre, Agriculture and Agri-Food Canada, Highway, V H , Summerland, BC, Canada have published the research work: a wide variety of picorna-like viruses infecting hosts that range from algae, fungi, plants, insects, and mammals. Thus, 3CL-Pros have a long history of adaptation to virus infection cycles in a wide range of hosts [ 32 , 53 ]. Plant viruses encoding 3CL-Pros include members of the families Secoviridae and Potyviridae [ 81 ] as well as a proposed new family of plant picornaviruses exemplified . . .
  

   

  

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