Question

Indicate whether each of the following descriptions better applies to t-SNAREs (T) or v-SNAREs (V). Your answer would be a three-letter string composed of letters T and V only, e.g. TVV.

1 They are usually located on the target membrane.
2 They are composed of a single polypeptide chain.
3 They are usually associated with inhibitory proteins that can be released by Rab proteins.

Answer 1

t-SNAREs are located on the target membrane and facilitate vesicle fusion, whereas v-SNAREs are composed of a single polypeptide and are associated with Rab protein-mediated docking and fusion of vesicles. The answer string is 'TVV'.

Step-by-step explanation:

The question asks to indicate whether each of the following descriptions better applies to t-SNAREs (T) or v-SNAREs (V). Here are the answers in a three-letter string composed of letters T and V only:

1. T - They are usually located on the target membrane.
2. V - They are composed of a single polypeptide chain.
3. V - They are usually associated with inhibitory proteins that can be released by Rab proteins.

t-SNAREs are proteins that are associated with the target membrane and they facilitate the fusion of vesicles by interacting with v-SNAREs. v-SNAREs are typically one polypeptide chain and can interact with Rab proteins to facilitate vesicular transport by docking to the correct target membrane SNAREs and initiating the fusion process.