Helper-component proteinase

This enzyme is present in plant RNA viruses of the Potyviridae family. HC-Pro is encoded by all potyviruses, but is absent in some members of the Ipomovirus genus. HC-Pro is involved in virus transmission, virus polyprotein processing, and suppression of RNA silencing, an antiviral mechanism of plants.

References

Kasschau KD, Carrington JC (May 1995). "Requirement for HC-Pro processing during genome amplification of tobacco etch potyvirus". Virology. 209 (1): 268–73. doi:10.1006/viro.1995.1254. PMID 7747479.
Verchot, J. (1998). "Potyvirus helper component proteinase". In Barrett, A.J.; Rawlings, N.D.; Woessner, J.F. (eds.). Handbook of Proteolytic Enzymes. London: Handbook of Proteolytic Enzymes. pp. 677–679.
Pasin, Fabio; Daròs, José-Antonio; Tzanetakis, Ioannis E (2022). "Proteome expansion in the Potyviridae evolutionary radiation". FEMS Microbiology Reviews. 46 (4): fuac011. doi:10.1093/femsre/fuac011. ISSN 1574-6976. PMC 9249622. PMID 35195244.
Valli, Adrián A.; Gallo, Araiz; Rodamilans, Bernardo; López-Moya, Juan José; García, Juan Antonio (March 2018). "The HCPro from the Potyviridae family: an enviable multitasking Helper Component that every virus would like to have: The HCPro from the Potyviridae family". Molecular Plant Pathology. 19 (3): 744–763. doi:10.1111/mpp.12553. PMC 6638112. PMID 28371183.

External links

Helper-component+proteinase at the U.S. National Library of Medicine Medical Subject Headings (MeSH)

v t e Proteases: cysteine proteases (EC 3.4.22)
Caspase	Caspase 1 Caspase 2 Caspase 3 Caspase 4 Caspase 5 Caspase 6 Caspase 7 Caspase 8 Caspase 9 Caspase 10 Caspase 12 Caspase 13 Caspase 14
Fruit-derived	Papain Ficain Bromelain Actinidain
Calpain	CAPN1 CAPN2 CAPN3 CAPN5 CAPN6 CAPN7 CAPN8 CAPN9 CAPN10 CAPN11 CAPN12 CAPN13 CAPN14 CAPNS1 CAPNS2
Cathepsin	B C F H K L1/L2 O S W Z
Other	Clostripain Cancer procoagulant Separase Autophagin Cruzipain 3C-like protease Gingipain R Gingipain K

v t e Enzymes
Activity	Active site Binding site Catalytic triad Oxyanion hole Enzyme promiscuity Diffusion-limited enzyme Cofactor Enzyme catalysis
Regulation	Allosteric regulation Cooperativity Enzyme inhibitor Enzyme activator
Classification	EC number Enzyme superfamily Enzyme family List of enzymes
Kinetics	Enzyme kinetics Eadie–Hofstee diagram Hanes–Woolf plot Lineweaver–Burk plot Michaelis–Menten kinetics
Types	EC1 Oxidoreductases (list) EC2 Transferases (list) EC3 Hydrolases (list) EC4 Lyases (list) EC5 Isomerases (list) EC6 Ligases (list) EC7 Translocases (list)

Portal:

Biology

Category:

EC 3.4.22