منابع مشابه
Neurotransmitter : Release
The nervous system is composed of networks of cells that engage in coordinated circuits to permit neural function. Within these precise neural circuits, communication between individual cells is primarily chemical in nature. Neurotransmitter release via exocytosis of neurotransmitter-filled synaptic vesicles is a fundamental step in this process. Here we overview the biochemical processes that ...
متن کاملCalcium control of neurotransmitter release.
Upon entering a presynaptic terminal, an action potential opens Ca(2+) channels, and transiently increases the local Ca(2+) concentration at the presynaptic active zone. Ca(2+) then triggers neurotransmitter release within a few hundred microseconds by activating synaptotagmins Ca(2+). Synaptotagmins bind Ca(2+) via two C2-domains, and transduce the Ca(2+) signal into a nanomechanical activatio...
متن کاملNeurotransmitter Release at Central Synapses
Our understanding of synaptic transmission has grown dramatically during the 15 years since the first issue of Neuron was published, a growth rate expected from the rapid progress in modern biology. As in all of biology, new techniques have led to major advances in the cell and molecular biology of synapses, and the subject has evolved in ways (like the production of genetically engineered mice...
متن کاملMind-altering miniature neurotransmitter release?
I t is well established that calcium is the trigger for fast action potentialevoked synaptic transmission (1). After elevation of intracellular calcium ([Ca2 ]i) by action potential-mediated opening of voltage-dependent calcium channels (VDCCs), a low resting rate of neurotransmitter release of 0.01–0.03 vesicles per sec is elevated significantly to 20 per sec (2–4). Transmitter release occurri...
متن کاملMolecular analysis of neurotransmitter release.
The synaptic vesicle cycle can now be subdivided into a series of defined steps. These are the tethering of the SSV at the active site of the presynaptic membrane, followed by docking and by an ATP-dependent phase, termed priming. Fusion of the primed SSV with the plasma membrane is triggered by CA2+ entry through specific Ca2+ channels. All the steps in the SSV life cycle are regulated through...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: FEBS Letters
سال: 1990
ISSN: 0014-5793
DOI: 10.1016/0014-5793(90)81292-v