Question

GTP acts as____ allowing dynamin to squeeze membrane so vesicle can bud off:

GTP acts as an energy source allowing dynamin to squeeze the membrane during vesicle budding. Dynamin is a GTPase enzyme that plays a critical role in the scission of vesicles from the donor membrane during endocytosis. The hydrolysis of GTP by dynamin provides the energy required for constricting and pinching off the vesicle from the membrane, facilitating the budding process.

Answer 1

GTP serves as an energy source for dynamin, a GTPase enzyme involved in vesicle scission during endocytosis. Motor proteins like dynein and kinesin use ATP to move vesicles inside cells.

Step-by-step explanation:

GTP acts as an energy source for dynamin, a GTPase enzyme, which is crucial in the process of vesicle scission during endocytosis. The hydrolysis of GTP to GDP provides the necessary energy for the constriction and separation of the vesicle from the plasma membrane. In addition to dynamin, other molecular players such as motor proteins like dynein and kinesin utilize ATP to transport vesicles along microtubule tracks within the cell. These motor proteins, which are also ATPases, are integral in moving cargo like secretory vesicles and neurotransmitter-containing vesicles to their destination points, including the plasma membrane for exocytosis and the synapse for neurotransmission.