In photosynthesis, excess light energy is dissipated as heat by non-photochemical quenching (NPQ). The localization of proteins and their interactions in thylakoid membranes under high and low light conditions suggests that NPQ involves monomerization of the dimeric protein PsbS and interaction of the resulting monomers with components of trimeric light-harvesting complexes of photosystem II.
- Viviana Correa-Galvis
- Gereon Poschmann
- Peter Jahns