Proteolytic processing of Chlorella virus CVK2 capsid proteins
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Updated: Nov 3, 2026

Analysis of Group IV Viral SSHHPS Using In Vitro and In Silico Methods
Published on: December 21, 2019
P Songsri1, S Hiramatsu, M Fujie
1Faculty of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima 739, Japan.
Abstract:
Chlorella virus CVK2 particles contain several capsid proteins that are selectively released by treatment with 4 M urea. Seven of them (Vp52, Vp45, Vp41, Vp25, Vp20.5, Vp20, and Vp16.2) have been identified based on amino acid sequences at the N-terminus. Comparison of the amino acid sequences with the corresponding ORFs deduced from the nucleotide sequence of PBCV-1, the prototype member of Phycodnaviridae, revealed that the CVK2 proteins were processed at the N-terminal region by two different proteolytic activities.
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