Abstract
Development of chlorophyll‐proteins in photosystem II was studied with Euglena gracilis Z. during dark‐light transition. Upon illumination of the dark‐grown cells, protochlorophyllide was photoconverted to chlorophyll(ide) a with a low efficiency (14%). After a lag time of 1‐2 h, chlorophylls, apoproteins of antenna chlorophyll‐protein complex CP 43/47 and of light‐harvesting chlorophyll‐protein complex (LHCII) accumulated in the thylakoid membrane in a coordinated fashion. There was, however, a significant difference in the stability between the newly formed LHCII and CP 43/47 judging from non‐denaturing lithium dodecyl sulfate‐polyacrylamide gel electrophoresis. The possibility that efficiencies of incorporation and stabilization of chlorophylls in the apoproteins differ among the chlorophyll‐proteins in the early stage of greening of Euglena is discussed.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
