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Extensin is a component of cell walls. This protein is a hydroxyproline-rich glycoprotein, meaning that it...

Extensin is a component of cell walls. This protein is a hydroxyproline-rich glycoprotein, meaning that it has a backbone derived from the amino acid proline and side chains composed of several types of sugars. List the organelles that are involved in extensin (or any other glycoprotein) production and transport and describe what aspect of protein production and/or transport occurs in each organelle.

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Glycoproteins are synthesized and modified within two membrane-bound organelles in the cell, the rough endoplasmic reticulum and the Golgi apparatus. The protein component of the glycoprotein is assembled on the surface of the rough endoplasmic reticulum by the sequential addition of amino acids, creating a linear polymer of amino acids called a polypeptide. The sugar residues of the glycoprotein is added in Golgi apparatus. The carbohydrate is then modified by some enzymes and later on transported to other parts of the cell.

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