Helper-component proteinase

Helper-component proteinase
Identifiers
EC number 3.4.22.45
CAS number 124566-20-7
Databases
IntEnz IntEnz view
BRENDA BRENDA entry
ExPASy NiceZyme view
KEGG KEGG entry
MetaCyc metabolic pathway
PRIAM profile
PDB structures RCSB PDB PDBe PDBsum

Helper-component proteinase (EC 3.4.22.45, HC-Pro) is an enzyme.[1][2] This enzyme catalyses the following chemical reaction

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

This enzyme is present in many potyviruses.

References

  1. Kasschau, K.D.; Carrington, J.C. (1995). "Requirement for HC-Pro processing during genome amplification of tobacco etch potyvirus". Virology. 209: 268–273. doi:10.1006/viro.1995.1254. PMID 7747479.
  2. Verchot, J. (1998). "Potyvirus helper component proteinase". In Barrett, A.J.; Rawlings, N.D.; Woessner, J.F. Handbook of Proteolytic Enzymes. London: Handbook of Proteolytic Enzymes. pp. 677–679.
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