In selective autophagy

specific cargo is packaged into autophagosomes that tend to contain little cytosol, mediates the degradation of worn out, or unwanted, mitochondria, peroxisomes, ribosomes, and ER; used to destroy invading microbes.

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#Section 3: Genetics, Cellular and Molecular Biology

The ER captures selected proteins from the cytosol as they are being synthesized. These are of two types:

Transmembrane proteins

Water-soluble proteins

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#Section 3: Genetics, Cellular and Molecular Biology

Muscle cells have an abundant, modified smooth ER called the sarcoplasmic reticulum.

The release and reuptake of Ca2+ by the sarcoplasmic reticulum trigger myofibril contraction and relaxation, respectively

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#Section 3: Genetics, Cellular and Molecular Biology

#Id: 7926

#Section 3: Genetics, Cellular and Molecular Biology

#Id: 7925

#Section 3: Genetics, Cellular and Molecular Biology

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#Section 3: Genetics, Cellular and Molecular Biology