| Transport
from the ER to Golgi |
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| • | Appropriately
modified proteins leave the ER and travel to |
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| the
Golgi Apparatus. |
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| • | They
travel in membrane vesicles that arise from special |
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| regions
of membranes that are coated by proteins. |
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| • | There
are of three types of coated vesicles that are well |
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| characterized,
clathrin-coated, COPI-coated and COPII- |
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| coated
vesicles. |
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| • | COPI
and COPII act mainly in ER or Golgi cisternae. |
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| • | Clathrin
acts in Golgi or plasma membranes. |
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