Question
Ras protein is a ______
The correct answer is
monomeric GTPase involved in relaying signal from cell surface to nucleus.
The question asks to define the Ras protein based on its structure and function.
Ras Protein Classification
Ras proteins are known to be small, monomeric GTPases. This distinguishes them from larger, heterotrimeric G proteins.
Ras Protein Function
Ras proteins play a crucial role in intracellular signal transduction. They act as molecular switches:
- When activated (bound to GTP), they relay signals from cell surface receptors.
- These signals are transmitted downstream, often towards the nucleus, influencing processes like cell growth and differentiation.
- This function involves relaying signals from the cell surface to the nucleus.
Therefore, Ras protein is a monomeric GTPase involved in relaying signals from the cell surface to the nucleus.
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Important Questions from Signal Transduction and Post Translational Modifications
- Acetylcholine released by the parasympathetic nerves has which one of the following functions in the heart pacemaker cells?
- Protein P becomes functional upon phosphorylation of a serine residue. Replacing this serine with ______ will result in a phosphomimic mutant of P.
- Which one of the following statements regarding G proteins is INCORRECT?
- Which one of the following aminoacids in proteins does NOT undergo phosphorylation?
- Choose the correct signal transduction pathway.
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