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Secretory proteins

Secretory protein

(Science: protein) In eukaryotes, proteins synthesised on [[rough Endoplasmic reticulum]] and destined for export. Nearly all proteins secreted from cells are glycosylated (in the golgi apparatus, although there are exceptions (albumin). In prokaryotes, secreted proteins may be synthesised on ribosomes associated with the plasma membrane or exported post translation.

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Biology question help?

... at a very low level I think the answer is 1 2,Which of the following proteins are least likely to contain a signal peptide? Options: 1.Cytosolic proteins 2. Nuclear Proteins 3. Secretory proteins 4. Membrane proteins I think the answer is membrane proteins

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by revision
Sat Dec 08, 2012 6:24 pm
Forum: Molecular Biology
Topic: Biology question help?
Replies: 5
Views: 3915

Re: Cell membrane targeting signals.

Proteins destined for secretion or residence within the lumen of the ER, Golgi apparatus, or ... ER membrane, they proceed to their final destination along the same pathway as that of secretory proteins: ER→ Golgi→ plasma membrane or lysosomes. These proteins are transported ...

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by Fransis
Tue Sep 06, 2011 9:39 am
Forum: Cell Biology
Topic: Cell membrane targeting signals.
Replies: 3
Views: 7289

Tissue cells and cancers.

... a cell contribute to the possibility of mutation/cancer? For example, secretory proteins? (With soo many processes going on in the cell, that the possiblility of mistakes ...

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by kolean
Mon Sep 20, 2010 12:50 pm
Forum: General Discussion
Topic: Tissue cells and cancers.
Replies: 4
Views: 10119

Explain protein transport plz

... to the ER. Ribosomes are what takes the mRNA and translates it into proteins/enzymes. If the protein is bound for the outside (extracellular) ... made protein/enzyme will bud off from the ER's membrane forming its own secretory membrane around it to keep it from being exposed to the cytoplasm. ...

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by kolean
Sat Aug 22, 2009 8:15 pm
Forum: Cell Biology
Topic: Explain protein transport plz
Replies: 2
Views: 8122

Biological Functions of...

Just wanted to add that proteins incorporate many sugars for signaling purposes: either glycoproteins or proteoglycans. For example: Secretory vesicles in the Golgi cisterna use mostly mannose, galactose, and NAG (N-Acetlyglucosamine) to ...

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by kolean
Wed Jul 08, 2009 5:20 pm
Forum: Cell Biology
Topic: Biological Functions of...
Replies: 3
Views: 5770
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