Covalent phytobilin adducts of GUN4 implicate a photoprotective mechanism in chlorophyll biosynthesis - Yan Wang; Chunhui Hou; Nathan C. Rockwell; Pawel Brzezowski; Weiqing Zhang; Xiahe Huang; Qiuling Fan; Yingchun Wang; Bernhard Grimm; J. Clark Lagarias; Deqiang Duanmu (Proceedings of the National Academy of Sciences, 2026)