04-03-2007, 10:35 AM
A)acts on peripheral nerves
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Ten people - saonew
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04-03-2007, 10:54 AM
u are right,answer is a
it doesnt degrade acetylcholine,instead it prevents the release of acetylcholine . The type A toxin proteolytically degrades the SNAP-25 protein, a type of SNARE protein. The SNAP-25 protein is required for the release of neurotransmitters from the axon endings . Botulinum toxin specifically cleaves these SNAREs, and so prevents neuro-secretory vesicles from docking/fusing with the nerve synapse plasma membrane and releasing their neurotransmitters. |
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