QUESTION 1 Which of the following statements is true? A Proteins destined for th

Question

QUESTION 1 Which of the following statements is true? A Proteins destined for the ER are translated by a special pool of ribosomes nhose subunits are always associated with the cytosolic side of the ER membrane B Proteins destined for the ER translocate their associated mRNA, into the ER lumen where they are translated. C The majority of proteins destined for the ER are translated by cytosolie ribosomes and are targeted to the ER when a signal sequence emerges during translation ER an in the cytosol

Explanation / Answer

A.

proteins which will go to the endoplasmic reticulum are synthesized by ribosomes which remain attached to the outer side of ther ER membrane. These proteins enter the ER while they translation process is still ongoing or not complete.

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