Protein Kinases Are Enzymes That Transfer the Terminal Phosphate from ATP

question 30

Multiple Choice

Protein kinases are enzymes that transfer the terminal phosphate from ATP to an amino acid residue on the target protein. Many are located on the plasma membrane as integral membrane proteins or peripheral membrane proteins. What purpose may be served by their plasma membrane localization?

• A) ATP is more abundant near the plasma membrane.
• B) They can more readily encounter and phosphorylate other membrane proteins.
• C) Membrane localization lowers the activation energy of the phosphorylation reaction.
• D) They flip back and forth across the membrane to access target proteins on either side.

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Definitions:

Acquaintance Rape

Sexual assault committed by someone the victim knows, such as a friend, coworker, or classmate, as opposed to a stranger.

Verbal Coercion

The act of using words and language to compel or force someone unwillingly to do something.

Feeling Of Being Raped Again

A traumatic psychological experience where a victim of sexual assault feels as if they are reliving the trauma, often triggered by events or situations that remind them of the original incident.

Victim's Encounter

The experience or interaction of an individual who has suffered harm with the source or context of their victimization.