| TROL | thylakoid rhodanase-like protein |
| FNR | ferredoxin:NADP+ oxidoreductase |
| RHO | rhodanase-like domain |
| ITEP | highly conserved module of TROL necessary for establishing high-affinity interaction with FNR |
| PEPE | Pro-Val-Pro repeat-rich region |
| IM | inner envelope membrane |
| SPP | stromal processing peptidase |