PulseTrendingJournal ClubResearchersJournalsExplore
Instagram
HomeTrendingJournal ClubExplore
Synapse
⌘+K
Synapse
February 1, 1983Proceedings of the National Academy of SciencesOpen Access

Localization of different photosystems in separate regions of chloroplast membranes

View Full Paper
Ask AI
Bookmark
Share

Authors

JAJan M. AndersonAMAnastasios Melis

Discussion

Loading...

Member takes

Overview

Randomized trial compares photoactivity of different photosystems in spinach, indicating distinct localizations within chloroplasts.

Key Points

  • This study aims to investigate the localization and photoactivity kinetics of photosystems I and II in chloroplast membranes.
  • Chloroplasts were mechanically pressed and thylakoid fractions were isolated using differential centrifugation.
  • Thylakoid vesicles were extracted from appressed membranes using aqueous polymer two-phase partitioning.
  • Stroma-exposed thylakoids are enriched in PSI and PSII(beta) with a chlorophyll a/b ratio of 6.0.
  • PSII(alpha) is exclusively found in appressed membrane vesicles with a high PSII/PSI ratio of 10.0.
  • No excitation transfer from PSII to PSI was observed, indicating functional separation.

Cite This Study

Anderson et al. (1983) studied this question.

synapsesocial.com/papers/6a1076c601be78fe8160e950https://doi.org/10.1073/pnas.80.3.745
View Full Paper
Ask AI
Bookmark
Share