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Receptors peptide

receptors, peptide

cell surface receptors that bind peptide messengers with high affinity and regulate intracellular signals which influence the behaviour of cells.


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Immune System

... Antibodies can be used for tagging, but more often they just bind receptors so they're useless or cause agglutination of invading particles ... death as above, and helper T-cells collect foreign antigens so that peptide fragments from them can be presented in conjunction with MHC complexes. ...

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by Babybel56
Tue May 10, 2011 7:05 pm
 
Forum: Human Biology
Topic: Immune System
Replies: 4
Views: 5681

Do we know all the proteins (and their primary structure!)?

... cannot be sure. To discover this sort of thing you don't just need the peptide sequence, but to observe it in action. For many things this requires ... with transmembrane proteins. This is why making drugs for certain receptors isn't a simple task, because we can't know exactly what size and ...

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by Babybel56
Thu Apr 28, 2011 11:13 am
 
Forum: Cell Biology
Topic: Do we know all the proteins (and their primary structure!)?
Replies: 5
Views: 3080

The Immune System - Recognition in innate immunity. How?

... are common to microbes but not present in the host body. This way the receptors that recognize these can be assembled straight from their respective ... response is slower, but very specific, recognizing mostly protein or peptide motifs. Thus, the type of immune response is largely determined by ...

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by biohazard
Tue May 12, 2009 7:43 am
 
Forum: Cell Biology
Topic: The Immune System - Recognition in innate immunity. How?
Replies: 2
Views: 10081

Lipid Trafficking

... an antigen-presenting cell bearing MHC II molecules presents an MHC II:peptide complex to a T cell, it gathers a number MHC molecules on a single area on the cell surface, and the T cell does likewise with its CD4 receptors. This way there can be a lot stronger signal than there would be ...

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by biohazard
Tue Dec 09, 2008 8:01 am
 
Forum: Cell Biology
Topic: Lipid Trafficking
Replies: 6
Views: 4632

Need a little help tackling some questions(GRD 12 BIO)

... Testosterone, a steroid, indices many cells in the body to produce more receptors for human growth hormone (HGH), a peptide. HGH causes increased rates of anabolic processes. How would the two hormones differ ...

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by cangiz44
Fri Jun 01, 2007 3:23 am
 
Forum: General Discussion
Topic: Need a little help tackling some questions(GRD 12 BIO)
Replies: 1
Views: 3677
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