Proteins to be used by the cell will fold into their secondary or tertiary structures at polyribosomes in the cytoplasm.

Question

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Proteins are synthesized at the ribosomes, either free in the cytoplasm or bound to the endoplasmic reticulum. As they are synthesized, the amino acid chain begins to fold into its secondary and tertiary structures. This folding process often requires the assistance of chaperone proteins. The mature, folded protein is then released from the ribosome and can either remain in the cytoplasm or be transported to other organelles or the cell membrane.

Proteins to Be Used by the Cell Will Fold into Their