Why do there need to be SNARE proteins in both the membrane vesicle (the v-SNARE) and...

Why do there need to be SNARE proteins in both the membrane vesicle (the v-SNARE) and in the target membrane (the t-SNARE)? For example, why can’t there just be a single SNARE, only in the membrane vesicle?

Expert Solution

SNARE stands for SNAP REceptor.

v SNARE is present on vesicles and t SNARE is present on the membrane of target organelle.

Both of them are complementary in shape and size to each other. Both of them contain amino acids which can interact with each other and therefore help in the fusion of physical to the target membrane. These proteins are mainly involved in the transfer of molecules from vesicle to the target membrane mainly by the process of exocytosis.

This process involves the presence of SNARE on both the membranes, vesicle membrane and target organ oil membrane in order to be specific. If there were no SNARE on one of the membranes, then that membrane will fuse with any of the membrane by using other receptors. But to ensure that a given vesicle is using with its specific target organelle, these proteins must be present or both the membranes. Also if these proteins are present only on one of the membranes, then this membrane will not be able to recognise its target.

Therefore the overall function of the presence of SNARES on both the membranes is specificity, that is, to correctly transport the molecule present in vesicle to its target location.

Please give a good rating.

gladiator answered 2 years ago

How do coat proteins know where the vesicle will form? What mediates changes in membrane shape?...

How do coat proteins know where the vesicle will form? What mediates changes in membrane shape? How does the bud “pinch off” to form the vesicle? What happens to the coat proteins after vesicle formation? How does the vesicle know where to go?

What are four major functions of membrane proteins? How are membrane proteins inserted into the membrane...

What are four major functions of membrane proteins? How are membrane proteins inserted into the membrane - give details of two methods. Give a specific example of a protein that is an integral membrane protein. How can we determine from gene sequence information whether the protein will be an integral membrane protein?

Sketch a membrane contain the lipid bilayer, peripheral membrane proteins, and integral membrane proteins. Label the...

Sketch a membrane contain the lipid bilayer, peripheral membrane proteins, and integral membrane proteins. Label the lipid bilayer, peripheral membrane protein, an integral membrane protein. Name the types of intermolecular forces that hold peripheral and integral membrane proteins to the membrane and name the reagents that can be used to remove each type of membrane protein from association with the membrane.

Cell biology 8. Why do proteins translocate across the ER membrane anyway? Where are they going?...

Cell biology 8. Why do proteins translocate across the ER membrane anyway? Where are they going? What happens if this gets messed up? Why does ERAD occur? How is it linked to UPR?

In the process of intracellular membrane vesicle transport in Eukaryotes neither the formation of such transport...

In the process of intracellular membrane vesicle transport in Eukaryotes neither the formation of such transport vesicles nor their fusion with a target membrane occur spontaneously in the cell. Briefly describe the machinery that cells use to achieve these two processes

Compare the functions of the small intestine and the large intestine. Why do proteins need to...

Compare the functions of the small intestine and the large intestine. Why do proteins need to incorporate into the triglyceride molecules to form the chylomicrons? Why can’t the chylomicrons move directly into the capillaries like monosaccharides and amino acids?

Why are proteins able to pass through the plasma membrane but lipids cannot?

A membrane vesicle containing a solution with 0.25 M solute is placed into a solution containing...

A membrane vesicle containing a solution with 0.25 M solute is placed into a solution containing 0.5M solute. You may assume that the membrane is impermeable to the solute and that the external solution is so large that you cannot change it’s solute concentration. What will happen to the membrane vesicle? A. There will be no net osmosis B. It will swell due to osmosis until it’s solute concentration reaches 0.5M C. It will shrink due to osmosis until it’s...

Describe how you will determine the affect of temperature on lipid membrane fludity in the Vesicle...

Describe how you will determine the affect of temperature on lipid membrane fludity in the Vesicle Transitions Using Fluorescence Polarization experiment.

What are the differences between amphitrophic and peripherial proteins in the membrane and what functions do...

What are the differences between amphitrophic and peripherial proteins in the membrane and what functions do they have?

Question