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What are the essentials of chemiosmosis?

What are the essentials of chemiosmosis?. Complex III. matrix. Q. QH 2. 2 Q. 2 x QH 2. cytosol. c 1. c. Cyt c. Complex IV – Cytochrome C Oxidase . Fe(III)  Fe(II). Cu(II)— Cu(I)  Cu(I) — Cu(I). Cu(II)  Cu(I) . Complex IV – Cytochrome C Oxidase . oxy. H+ limiting. +4 e-.

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What are the essentials of chemiosmosis?

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  1. What are the essentials of chemiosmosis?

  2. Complex III matrix Q QH2 2 Q 2 x QH2 cytosol c1 c Cyt c

  3. Complex IV – Cytochrome C Oxidase Fe(III) Fe(II) Cu(II)—Cu(I)Cu(I)—Cu(I) Cu(II)  Cu(I)

  4. Complex IV – Cytochrome C Oxidase oxy H+ limiting +4 e- peroxy reduced Ferryl – H2O H+ limiting oxidized

  5. Ubiquinone Stigmatellin - co-crystallized in Cyt B1C

  6. carboxylation regeneration reduction Outside thylakoid: 4 H+ lost from here Inside thylakoid: 4 H+ produced here

  7. Photosystem I SUN CATCHER Each lobe of clover-leaf-shaped crystal of photosystem I contains 12 different proteins, shown here in different colors with only the protein backbone of each depicted. Amid the proteins are 96 chlorophylls (pale yellow) as well as other cofactors.

  8. “Z-Scheme”

  9. Eox (V) +1.2 V +0.6 V 0.0 -0.6 V -1.2 V PSI parallels Complex IV= cyt c oxidase in respiration Plastocyanin in PSI parallels cyt c in respiration + 4e- Mn4O4 cluster in PSII parallels Complex I in respiration

  10. confusing?

  11. Cytochorme b6f (analog of respiratory cytochrome b1c)

  12. PSI Reaction Center cofactors only

  13. PSI Reaction Center E- acceptor Chl pigments

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