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Information on EC - helper-component proteinase

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EC Tree
     3 Hydrolases
         3.4 Acting on peptide bonds (peptidases)
             3.4.22 Cysteine endopeptidases
       helper-component proteinase
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The enzyme appears in viruses and cellular organisms
hc-pro, hcpro, helper component-proteinase, helper component proteinase, hc-pro protein, helper component-protease, helper component protease, hc-pro proteinase, more
hydrolyses a Gly-/-Gly bond at its own C-terminus, commonly in the sequence -Tyr-Xaa-Val-Gly-/-Gly, in the processing of the potyviral polyprotein
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endopeptidase; Known from many potyviruses. The helper component-proteinase of the tobacco etch virus is a multifunctional protein with several known activities: the N-terminal region is required for aphid transmission and efficient genome amplification, the central region is required for long-distance movement in plants, and the C-terminal domain has cysteine endopeptidase activity. Type example of peptidase family C6
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