File:Thylakoid targeting.png
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Thylakoid_targeting.png (513 × 469 pixels, file size: 38 KB, MIME type: image/png)
Summary
Schematic representation of thylakoid protein targeting pathways:
- Toc and Tic: translocon of outer and inner envelope membrane of chloroplasts, respectively
- 1. SRP (signal recognition particle) pathway; required GTP and pH gradient as energy source
- 2. ΔpH/Tat pathway; requires pH gradient as energy source
- 3. Sec (secretory system) pathway; required ATP as energy source
- not shown: spontaneous insertion of transmembrane proteins requiring no energy source
Chloroplast targeting peptide shown in yellow is cleaved off by a processing protease after entering the chloroplast. Thylakoid targeting peptide shown in blue may be cleaved off (lumenal proteins) or not (membrane proteins).
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File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 05:51, 13 January 2017 | | 513 × 469 (38 KB) | 127.0.0.1 (talk) | Schematic representation of thylakoid protein targeting pathways: <ul> <li>Toc and Tic: translocon of outer and inner envelope membrane of chloroplasts, respectively</li> <li>1. SRP (signal recognition particle) pathway; required GTP and pH gradient as energy source</li> <li>2. ΔpH/Tat pathway; requires pH gradient as energy source</li> <li>3. Sec (secretory system) pathway; required ATP as energy source</li> <li>not shown: spontaneous insertion of transmembrane proteins requiring no energy source</li> </ul> Chloroplast targeting peptide shown in yellow is cleaved off by a processing protease after entering the chloroplast. Thylakoid targeting peptide shown in blue may be cleaved off (lumenal proteins) or not (membrane proteins). |
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