Viral suppressor of RNA silencing which binds specifically to silencing RNAs (siRNAs). Acts as a molecular caliper to specifically select siRNAs based on the length of the duplex region of the RNA (By similarity).
Belongs to the tombusvirus protein p19 family.
RNA silencing suppressor p19, 19 kDa symptom severity modulator, ORF4
Proteins
19808Da
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