A small GTP-binding protein called dynamin assembles as a ring around the neck of each deeply invaginated coated pit, pinch off the vesicle. After the budding is complete, the coat proteins are removed, and the naked vesicle can fuse with its target membrane.
Explanation:
Dynamin - may be a GTPase that takes part in an important role in clathrin-dependent endocytosis and other vesicular trafficking processes by acting like a couple of molecular scissors for newly setup vesicles originating from the cell wall.
The rod and cone layer (bacillary layer) contains the inner and outer segments of the rod and cone photoreceptors cells. The pigment epithelium is the most external layer of the retina.