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Opuntin B, the antiviral protein isolated from prickly pear (Opuntia ficus-indica (L.) Miller) cladode exhibits ribonuclease activity. | LitMetric

AI Article Synopsis

Article Abstract

An antiviral protein, designated Opuntin B, was purified from Prickly Pear (Opuntia ficus-indica (L.) Miller) Cladode by heat treatment of the extract, protein precipitation by ammonium sulfate treatment followed by ion-exchange chromatography. Assessment of enzymatic activity of the purified protein showed that it degrades total plant genomic RNA, while causing electrophoretic mobility shifting of Cucumber mosaic virus (CMV) RNAs. However, heat-denatured viral RNA became sensitive to degradation upon treatment with antiviral protein. Opuntin B had no DNase activity on native and heat-denatured apricot genomic DNA, and on PCR-amplified coat protein gene of CMV. Using CMV as prey protein and Opuntin B as bait protein, no interaction was found between the antiviral protein and viral coat protein in far western dot blot analysis.

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Source
http://dx.doi.org/10.1016/j.micpath.2019.103929DOI Listing

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