1 / 21

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-.

fauve
Télécharger la présentation

What are the essentials of chemiosmosis?

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  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

More Related