Translation kinetics and folding

Message boards : Rosetta@home Science : Translation kinetics and folding

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sam

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Message 73417 - Posted: 10 Jul 2012, 13:18:34 UTC

I was wondering, when a protein gets formed in the cell it happens through translation of the mRNA by ribosomes and tRNA which transports the aminoacids onto the mRNA. Anyway, how fast does this proces goes? And will a peptide string that's only formed step by step fold different then starting with a full string and then let it fold? I can imagine that the first part of the string will start folding and that the end result will have possibly more energy then when you could start with the whole string unfolded. (cause the first part is already folded and can't be unfolded) Do they take this into account in the folding predictions?
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svincent

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Message 73422 - Posted: 10 Jul 2012, 19:51:23 UTC - in response to Message 73417.  

I was wondering, when a protein gets formed in the cell it happens through translation of the mRNA by ribosomes and tRNA which transports the aminoacids onto the mRNA. Anyway, how fast does this proces goes? And will a peptide string that's only formed step by step fold different then starting with a full string and then let it fold? I can imagine that the first part of the string will start folding and that the end result will have possibly more energy then when you could start with the whole string unfolded. (cause the first part is already folded and can't be unfolded) Do they take this into account in the folding predictions?


This thread touches on some of these points

Does the N-terminus thread first?
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sam

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Message 73424 - Posted: 10 Jul 2012, 23:20:11 UTC - in response to Message 73422.  


This thread touches on some of these points

Does the N-terminus thread first?

Aha thanks! did a quick forum search but without results.
Especially the chaperones are quite interesting :)
Still wondering how much time it takes to build the protein (seconds? hours?)
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Profile dcdc

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Message 73528 - Posted: 24 Jul 2012, 22:54:13 UTC

Apparently this is approximately real-time:

http://www.youtube.com/watch?v=D3fOXt4MrOM
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Message boards : Rosetta@home Science : Translation kinetics and folding



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