LIFE 210 Lecture Notes - Cytochrome B6F Complex, Thylakoid, Peripheral Membrane Protein
Document Summary
6co2 + 6h2o + light c6h12o6 + 6o2 e-s from h2o. 2h2o + 2nadp+ + 3adp + 3pi + light o2 + 2nadph + 3atp (use to fix co2) Stroma enzymes for co2 fixation, ph 8. Thylakoid membrane contains psii & i, antenna, atp synthase. Fad flavin flavoprotein (fp), 1 or 2 e- & h+ Pq - plastoquinone, 1 or 2 e- & h+ Cyt b6 similar to cyt bh and bl. Cyt bf in cyt bf complex, functions like etc complex iii. Cu2+ - plastocyanine (pc, functions like etc cyt c) 4 mn2+ 4 mn3+ - water cleaving complex (4 e- from 2h2o) Chlorophylls are in the reaction centers of photosystems. Light energy hits reaction center chlorophyll in photosystem ii. Kicks e- to higher energy passes to plastoquinone. Plastoquinone functions as lipid-soluble e- carrier e- carried to cytochrome b6-f complex. Q cycle and proton pumping e- passed to plastocyanin. Plastocyanin is peripheral membrane protein e- feed to photosystem i.
