Multiple Choice
Which of the following is not a protein modification that allows for protein regulation?
6. Proteins
Protein Regulation
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Hydrolysis of GTP to GDP causes what to occur to a GTP-Binding protein
A
It marks it for degradation
B
It cleaves it
C
It activates it
D
It inactivates it
Verified step by step guidance1
Understand the role of GTP-binding proteins: These proteins act as molecular switches in cells, toggling between an active and inactive state.
Recognize the active state: When a GTP-binding protein is bound to GTP, it is in its active form, capable of interacting with other cellular components to propagate signals.
Identify the process of hydrolysis: Hydrolysis is a chemical reaction that involves the breaking of a bond in a molecule using water. In this context, it refers to the conversion of GTP to GDP.
Determine the effect of GTP hydrolysis: The hydrolysis of GTP to GDP results in the inactivation of the GTP-binding protein. This is because the protein changes conformation and can no longer interact with its target molecules effectively.
Conclude the outcome: The inactivation of the GTP-binding protein upon GTP hydrolysis is a regulatory mechanism that ensures cellular processes are tightly controlled and only occur when necessary.
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