Is it likely that glycosylated threonine residues will be found on proteins located in the lumen...

Is it likely that glycosylated threonine residues will be found on proteins located in the lumen of the endoplasmic reticulum? Explain

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Expert Solution

SOLUTION- glycans serves a variety of structural and functional roles in the membrane and secreted proteins. the majority of proteins synthesized in the rough endoplasmic reticulum undergo glycosylation. it is an enzyme directed site-specific process, as opposed to a non -enzymatic chemical reaction of glycation. glycation is also present in the cytoplasm and nucleus as the o-glcnac modification.

PROTEIN GLYCOSYLATION is an enzyme directed chemical reaction that takes place in the ER(endoplasmic reticulum) and in the Golgi apparatus body of the cell. general glycosylation within the endoplasmic reticulum helps with folding and glycosylation in the Golgi body tells a protein where to go.it is a process by which a carbohydrate is covalently attached to a target macromolecule, typically proteins and lipids.

glycosylation starts at the endoplasmic reticulum during protein synthesized in the ribosome moreover the covalently binding of glycans to the protein surface may inherently enhance the thermal and kinetic stability of proteins

precursor glycan synthesis begins on the cytosolic face of the endoplasmic reticulum and is completed after the structure is flipped into endoplasmic reticulum lumen

thanks

gladiator answered 1 year ago

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