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| 1. |
Assembly
of the precursor
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oligosaccharide…
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IMPORTANT
POINTS:
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– |
Assembly
takes place on the carrier
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lipid
dolichol, anchored in the ER
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membane.
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– |
A
pyrophosphate bridge joins the
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1st
sugar to the dolichol.
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– |
Sugars
are added singly and
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sequentially.
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– |
After
the two N-acetylglucos-
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amines
are added, the assembly
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flips
from the cytosolic side to the
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ER
lumen.
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– |
Nine
mannose and three glucose
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molecules
are added, totaling 14
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sugars.
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