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BIO 320 Lecture 15

Terms in this set (16)

Secretory proteins are found in the __ __ immediately after synthesis

__ sequences determine orientation of ER membrane proteins

The number of topogenic sequences determines how many times it goes in and out of the __.

Newly synthesized polypeptides in the membrane and
lumen of the ER undergo five principal modifications:

1) Formation of disulfide bonds
2) Proper folding
3) Addition and processing of carbohydrates
4) Specific proteolytic cleavages
5) Assembly into multimeric proteins

__ bonds are formed and rearranged in the ER lumen

Disulfide bonds are key in the __ structure of proteins

Only properly __ proteins are transported from the rough ER to the Golgi

Many unassembled or misfolded proteins in the ER are transported o the __ and __

cytosol, degraded

ER-resident proteins often are retrieved from the __-Golgi

__ peptide sequences are going to be retrieved from the Golgi back to the ER

Modifications to N-linked __ are completed in the Golgi complex

oligosaccharides

Oligosaccharides may promote __ and __ of glycoproteins

folding, stability

Every protein that comes into the mitochondria has a __ targeting sequence.

Every protein that comes into the chloroplast has a __ targeting sequence.

Proteins with __ sequence are sent to the peroxisome

__ __ residues target proteins to the lysosome

mannose 6-phosphate

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