Table III. 3-phosphoinositide regulated pathways in yeast.
| PtdIns(3)P regulated pathways | PtdIns(3)P effector | Stage | Motif |
|---|---|---|---|
| CPY pathway | Vac1 | Golgi-to-endosome | FYVE domain |
| CPY pathway | Vps27 | Endosome maturation | FYVE domain |
| CPY pathway | Vam7 | Endosome/vacuole fusion | PX domain |
| Vacuole membrane recycling/turnover | Fab1 | Unknown | FYVE domain |
| Cvt pathway | Etf1 | Cvt vesicle formation | KKPAKK |
| Cvt pathway | Vam7 | Cvt vesicle/vacuole fusion | PX domain |
| Macroautophagy | Unknown | Autophagosome formation | Unknown |
| Macroautophagy | Vam7 | Autophagosome/vacuole fusion | PX domain |
Proteins which contain either FYVE domains or PX motifs execute Vps34 functions in the CPY sorting pathway (Vac1, Vps27, and Vam7) and in vacuole membrane recycling/turnover (Fab1).