C
Questions? Comments? Please contact Dr. Phillip McClean or Christina Johnson.

OVERVIEW
Flythrough Tour
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MOLECULAR PROCESSES
Transcription
Regulated Transcription
mRNA Processing
mRNA Splicing
Translation
Lac Operon
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CELLULAR PROCESSES
Protein Trafficking
Protein Modification
Protein Recycling
Insulin Signaling
Constitutive Secretion
Regulated Secretion
Mitochondrial Protein Transport
Mitosis
Meiosis
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CELLULAR ENERGY CONVERSION
Atp Synthase (Gradients)
Electron Transport Chain
Photosynthesis (Light Reaction)
Photosystem II
Glycolysis (Overview)
Glycolysis (Reactions)
Citric Acid Cycle (Overview)
Citric Acid Cycle (Reactions)
Energy Consumption
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HOME > CONSTITUTIVE SECRETION > ADVANCED LOOK > 1.) GOLGI
Constitutive Secretion: Advanced Look --> 1.) Golgi

The first stage of constitutive secretion sees proteins from the rough endoplasmic reticulum (ER) travel through the Golgi apparatus. Clicking on each of the thumbnail images will bring up a larger, labeled version of the described scene.

To see the Flash movie for the following sequence of images, click here.

Some unpolarized cells, such as certain white blood cells, only secrete one type of protein. These proteins are packaged into secretory vesicles and sent to the cell membrane.

Proteins destined for the constitutive secretion pathway must first leave the endoplasmic reticulum and pass through the Golgi apparatus. All eukaryotic cells use constitutive secretion to maintain their plasma membranes.

If no modifications are made to the protein while inside the Golgi, it will enter the default secretory pathway, and the secretory vesicle it is packaged into will be sent directly to the cell membrane for immediate secretion.

NEXT --> 2.) EXOCYTOSIS

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