Reposted by Ali Leverett
🌿🔆 PsbS drives NPQ, but how? In Arabidopsis, T259 phosphorylation was undetectable.
Mutations impaired quenching—pointing to the C-terminus stabilizing PsbS–LHCII interactions, not phosphorylation. #plantscience @jxbotany.bsky.social @sebiology.bsky.social academic.oup.com/jxb/advance-...
academic.oup.com
Mutation of a stromal C-terminal threonine residue of Photosystem II subunit S slows down NPQ induction and speeds up relaxation
Abstract. In order to prevent damage by excess light, light harvesting antennae can switch to an energy dissipative mode (termed non-photochemical quenchin