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Unformatted text preview: cytoplasm. Rough ER has connections to the nuclear envelope Proteins synthesized at the ribosomes of cells that secrete proteins, such as digestive enzymes or hormones, transport the proteins through the rough endoplasmic reticulum channels. Small signal peptide sequences during protein synthesis are responsible for moving the polypeptide into the ER for modification and transport. Proteins accumulate in pockets in the ER that break off forming transport vesicles for export. Rough endoplasmic reticulum may synthesize itself, and also can be used to maintain and replace nuclear or plasma membrane as needed....
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This note was uploaded on 12/29/2011 for the course BIO 151 taught by Professor Edwards during the Spring '10 term at SUNY Stony Brook.
- Spring '10
- Endoplasmic Reticulum