(Solved): 'hat is the difference between the "stable compartments" model and the "cisternal maturation" model ...

'hat is the difference between the "stable compartments" model and the "cisternal maturation" model? How do cargo proteins move through the Golgi in each of ese models? How do Golgi-resident proteins move through the Golgi in each of these models? In the stable compartment model, the Golgi is composed of biochemically distinct compartments. Compartments remain stable because Golgi resident proteins and secretory cargo proteins are both transported between compartments by vesicle transport. In the cisternal maturation model, the Golgi is composed of biochemically distinct cisternae because the rate of cisternal maturation matches the rate of cargo protein transport though the secretory pathway. In the stable compartment model, Golgi cisternae retain early/cis Golgi resident proteins while the yeast cell is young. Golgi resident proteins and secretory cargo proteins move from the ER to the Golgi by anterograde vesicle transport. In the cisternal maturation model, when a yeast cell matures and is ready to bud a daughter cell, late/trans Golgi cisternae cluster near sites of polarized growth to release secretory cargo proteins by exocytosis. In the stable compartment model, Golgi cisternae don't move inside the cell, and both Golgi resident proteins and secretory cargo proteins are added and removed by vesicle transport. In the cisternal maturation model, individual cisternae are able to move around the cell because Golgi cisternae are not stacked in yeast. Early cisternae can move to the ER to acquire new Golgi resident proteins and cargo proteins, and late cisternae can move near sites of polarized growth to mature. In the stable compartment model, Golgi cisternae retain the same Golgi resident proteins over time. Secretory cargo proteins move from early to late cisternae by anterograde vesicle transport. In the cisternal maturation model, individual cisternae mature over time because Golgi enzymes move from late cisternae to early cisternae by retrograde vesicle transport. In the cisternal maturation model, cargo proteins don't have to move - they can remain in the same compartment as it matures.