The electrochemical proton gradient generated across the membrane is used by the cells for atp synthesis absorption of a photon by br initiates a catalytic cycle that leads to vectorial transport of a proton out of the cell 它的質(zhì)子泵功能使br作為最有前途的光敏蛋白,應用在光電轉(zhuǎn)換器,信號儲存和光學檢測等多種方面。