1j- Movement of proteins between membranes Flashcards

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1
Q

What happens when proteins are in the ER?

A

They are transported by vescicles that bud off from the ER and fuse with the golgi apparatus

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2
Q

What happens as proteins move through the golgi apparatus?

A

They undergo post-translational modification

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3
Q

How do molecules move through the golgi discs?

A

In vescicles that bud off from one disc and fuse to the next one in the stack. Enzymes catalyse the addition of various sugars in multiple steps to form the carbohydrates

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4
Q

What is the major modification that proteins experience as they move through the golgi apparatus?

A

The addition of carbohydrate groups

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5
Q

Vescicles that leave the golgi apparatus take proteins where?

A

To the plasma membrane and lysosomes

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6
Q

What happens after proteins are taken to the plasma membrane and lysosomes by vescicles?

A

Vescicles move along microtubules to other membranes and fuse with them within the cell

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