The abstract is read at the publisher; the summary is JClub's.
NbKNB1, a Nicotiana benthamiana potassium channel β-subunit homolog, restricts turnip mosaic virus by directly binding 6K2 and disrupting vesicle maturation and trafficking.
- Why it matters: Potyvirus 6K2 coordinates replication and intracellular movement, but it was unclear whether one host factor could simultaneously regulate both steps during infection.
- What they did: Genetic assays in N. benthamiana showed antiviral activity against TuMV; NbKNB1 relocalized to 6K2 replication complexes, directly interacted with 6K2, disrupted 6K2 self-association, and impaired 6K2-tagged vesicle maturation and CI-dependent cell-to-cell movement.
- The result: A 6K2-binding-deficient mutant, NbKNB1Δ270-279, failed to restrict both replication and intercellular movement, and NbKNB1 plus ZmKZB1 also reduced infection by other potyviruses, supporting antiviral breeding targets.
The findingWhy it mattersWhat they didThe result
AI summary of the abstract · may contain errors · not medical advice · read the paper.