OBJECTIVE LIFE SCIENCE
BIOCHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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They transport proteins between successive components of the Golgi compartments.
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They transport transmembrane proteins and GPI-linked proteins from the Golgi to the plasma membrane.
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They transport proteins from the ER to the Golgi.
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They form a rigid complex capable of protecting protein structure and orientation as it is passed from hydrophobic to hydrophilic environments.
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None of the above.
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Detailed explanation-1: -Coated vesicles are used to ensure that the enclosed protein maintains its proper orientation. Clathrin is one type of protein used to coat vesicles. Which of the following is true regarding clathrin vesicles? They transport proteins between successive components of the Golgi compartments.
Detailed explanation-2: -COPII-coated vesicles transport cargo proteins from the ER to the Golgi; COPI-coated vesicles transport cargo in the retrograde direction (from the cis-Golgi back to the ER) and between Golgi cisternae; and clathrin-coated vesicles form from the plasma membrane and the TGN to fuse with endosomes or lysosomes (Fig.
Detailed explanation-3: -The major types of coat proteins used in vesicle formation are COPII, COPI, and clathrin. COPII coat proteins form the vesicles that move from ER to Golgi.