what is the difference bettween cotranslational import and p

what is the difference bettween cotranslational import and posttranslational import of proteins into organelles? of the organelles listed below, which make use of which type of import? 1. ER 2. Mitochondria 3. nucleus 4. peroxisome

Solution

Cotranslational transport involves translocation of a growing peptide chain within the cell simultaneously like to the ER.

Where as, post translational transport involves initially protein synthesis in the cytosol followed by transport to ER.

Cotranslational - ER,

Post translational- Mitochondria, nucleus and peroxisome