| Membrane
proteins |
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| • | Complications:
proteins embedded in membranes |
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| • | protein contains
a stop-transfer sequence which is too |
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| hydrophobic to
emerge into aqueous environment of ER lumen |
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| • | stop-transfer
sequence therefore gets stuck in membrane |
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| • | ribosome lets go
of translocon, finishes job in cytoplasm |
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| • | translocon
dissociates, leaves protein embedded in membrane |
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| • | example = LDL receptor |
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