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Chapter 15Intracellular Compartments and
Transport
EssentialCell Biology
Third Edition
Copyright © Garland Science 2010
backgrounds
• Membrane-Enclosed Organelles
• Protein Sorting
• Vesicular Transport
• Secretory Pathways
• Endocytic Pathways
Contents
Membrane-Enclosed Organelles
Figure 15-1 Essential Cell Biology (© Garland Science 2010)
Eucaryotic cells contain a basic set of membrane-enclose organelles
Figure 15-2 Essential Cell Biology (© Garland Science 2010)
Table 15-1 Essential Cell Biology (© Garland Science 2010)
Smooth ER
• Steroid hormone synthesis (adrenal gland)
• Organic molecules detoxified (liver cells)
• Ca2+ release and reuptake
Table 15-2 Essential Cell Biology (© Garland Science 2010)
Figure 15-3 Essential Cell Biology (© Garland Science 2010)
The interiors of these organelles are treated by the cell in may ways as ‘extracellular’.
Why the nucleus is surrounded by two membranes.
The similarity of the genomes to those of bacteria.
The close resemblance of some of their proteins to bacterial proteins.
These remain isolated from the extensive vesicular traffic.
Protein Sorting