EOG80VZ54 GO:0005097 23/108 GTPase activator activity molecular_function "Binds to and increases the activity of a GTPase, an enzyme that catalyzes the hydrolysis of GTP." [GOC:mah] EOG80VZ54 GO:0043195 1/108 terminal bouton cellular_component "Terminal inflated portion of the axon, containing the specialized apparatus necessary to release neurotransmitters. The axon terminus is considered to be the whole region of thickening and the terminal bouton is a specialized region of it." [GOC:dph, GOC:mc, GOC:nln, PMID:10218156, PMID:8409967] EOG80VZ54 GO:0031594 1/108 neuromuscular junction cellular_component "The junction between the axon of a motor neuron and a muscle fiber. In response to the arrival of action potentials, the presynaptic button releases molecules of neurotransmitters into the synaptic cleft. These diffuse across the cleft and transmit the signal to the postsynaptic membrane of the muscle fiber, leading to a change in post-synaptic potential." [GOC:nln]