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14 Cards in this Set
- Front
- Back
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how do organlles differ?
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-solution conditions
-lipid content of membrane -protein content |
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what are all the exocytic compartments present in all eukaryotes?
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the ER, the compartments of the Golgi apparatus, and post-Golgi transport vesicles
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Where is the site for synthesis and proper folding of proteins?
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The ER
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where are proteins modified, sorted and carried out by post-Golgi transport vesicles to the correct destination?
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the Golgi apparatus
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what moves proteins and other macromolecules from one membrane-bounded compartment to the next along the endocytic and exocytic pathways?
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transport vesicles
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what do cis and trans golgi mean?
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cis closest to ER
trans farthest from ER |
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transcytosis
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the transfer of nutrients from the intestine to the bloodstream.
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how is cargo selection accomplished?
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when cytoplasmic coat proteins bind to sorting signals (like V-SNARES)
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what are the types pf protein transport? Transport of bulk proteins
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-single mediated--> requires sorting signal. cargo concentrated by receptors.
-bulk flow -->does not require sorting signal. cargo incorporated at prevailing concentrations |
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Coat protein II (COPII) coated vesicles
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mediate transport from the ER to the golgi apparatus.
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what is the only known vesicle to originate from the ER
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COPII
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After fission, COPII vesicles?
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cluster, fuse and then move along microtuble tracks to the cis-side of the golgi apparatus.
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Coat protein I (COPI)
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mediate retrograde transport from the golgi apparatus to the ER.
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what are the 2 popular forward transport models in the golgi apparatus?
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Not mutually exclusive
1. transport of large protein structures though the golgi apparatus by CISTERNAL MATURATION. 2. individual proteins and small proteins structures are transported though the Golgi apparatus either by cisternal maturation or vesicle-mediated transport. |
