Abstract
Chlorophyll fluorescence excitation and emission spectroscopy, electron absorption spectroscopy and resonance Raman spectrometry of light-harvesting pigment-protein complex of Photosystem II (LHC II), isolated and incorporated to liposomes, indicate that a carotenoid pigment violaxanthin is present in this complex in conformation 15, 15′- cis. Light-induced cis- trans-isomerization of violaxanthin is combined with an energetic uncoupling of this antenna pigment from chlorophyll and is interpreted in terms of detachment of this carotenoid from protein — the process of making violaxanthin available for de-epoxidation within the lipid phase of the thylakoid membrane. It is also demonstrated that the process of heat-induced detachment of violaxanthin from LHC II is not combined with a cis-trans- isomerization.
Sign-in/Register to access full text options 
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 callMore From: Biochimica et Biophysica Acta (BBA) - Bioenergetics
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
