55. A synthesized protein with the following configuration will have its N-termi

Question

55. A synthesized protein with the following configuration will have its N-terminus and C-terminus in which configuration? Protein- Signal- Protein- Stop - Protein A. N-terminus- ER, C-terminus->Cytoplasm B. N-terminus Cytoplasm, C-terminus- ER C. N-terminus- ER, C-terminus- ER D. N-terminus- Cytoplasm, C-terminus- Cytoplasm 56. Transmembrane receptors could be Heterodimers or Homodimers A. True B. False 57. G-protein coupled receptors initiate signalling via recruitment of the G-protein to the activated receptor. This recruitment and activation is facilitated by; A. Activation via ATP B. Nuclear transport receptors C. Deletion of internal residues D. Conformational changes in the G-protein 58. Which of the following is the target of cyclic AMP? A. Protein Kinase A (PKA)

Explanation / Answer

57. Ans- D.Conformational changes in the G-protein
Explanation:
An external signal in the form of a ligand or other signal mediator activates the G protein-coupled receptor that causes a conformational change of a receptor to activate a G protein. G-protein is inactivated by GTPase activating proteins, called RGS protein.

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