klimt
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Eukaryotic proteins that exist as a nonmembrane-associated, glycosylated, disulfide-linked dimer in the mature form are generally found in which of the following?
A. cytoplasm
B. extracellular space
C. mitochondrial matrix
D. nuclear matrix
E. nuclear pore
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| ManuNastai
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A?? Golgi aparatus?
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| mrsjiya
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[size=1] ithink [/size]
[size=1]A?[/size]
[quote=klimt]Eukaryotic proteins that exist as a nonmembrane-associated, glycosylated, disulfide-linked dimer in the mature form are generally found in which of the following?
A. cytoplasm
B. extracellular space
C. mitochondrial matrix
D. nuclear matrix
E. nuclear pore [/quote]
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| proctalgia
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A--> But i am not sure of explanation
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| hatiifa
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a glycoslated protien could be secreted from cell. why not B?
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| girl^interrupted
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Proteins made on Free ribosomes are targeted to the cytoplasm, and mitochondria.
Proteins that are made in the RER undergo post-translational modification and get glycosylated in the RER as well as the Golgi and go to:
1. Extracellular space (get secretd out of the cell)
2. Become a membrane protein (within the membrane like a channel, etc.)
3. Lysosomes (eg. Lysosomal enzymes)
* (Lysosomal enzymes will only go to Lysosomes if there is phosphorylation of mannose residues on the enzyme that takes place in the Golgi!) -If NO phospyorylation of mannose residues, then that enzyme gets secreted out of the cell! (I-Cell Disease)
Hence B.
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| fox
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http://www.prep4usmle.com/forum/comments.php?id=3...
Its B guys
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| vallia
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B
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