Consider the events that describe the progress of a protein that will be secreted from the cell.
1. SRP binds to the growing polypeptide chain and to the ribosome.
2. Translation resumes.
3. SRP binds to its receptor.
4. The signal sequence is cleaved.
5. Protein synthesis begins in the cytosol.
6. Translation pauses.
Which of the sequences of events correctly describes the progress of a protein that will be secreted from the cell?
A) 5 ? 1 ? 6 ? 3 ? 2 ? 4
B) 5 ? 6 ? 1 ? 3 ? 2 ? 4
C) 3 ? 6 ? 1 ? 2 ? 4 ? 5
Ans: A) 5 ? 1 ? 6 ? 3 ? 2 ? 4
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