| IM | inner membrane |
| GR | Germinant Receptor |
| CaDPA | Ca-dipicolinic acid |
| APC | amino acid polyamine organocation |
| TM | trans membrane |
| POPG | palmitoyloleoylphosphatidylglycerol |
| TMCL2 | cardiolipin |
| POPE | palmitoyloleoylphosphatidylethanolamine |
| IL | intracellular loop |
| EL | extracellular loop |