PhotobiologyPublished 2 July 2025The role of protonation processes in the gradual formation of the light-adapted charge-separated state of photosystem IIMelinda Magyar · Gábor Sipka · Ildikó Domonkos · Xiaojun Chen · Xu Wang · Guangye Han · Jian-Ren Shen · Petar H. Lambrev · Győző GarabFrontiers in Photobiologydoi 10.3389/fphbi.2025.1623224