Monitoring protein misfolding by site-specific labeling of proteins in vivo.
Monitoring protein misfolding by site-specific labeling of proteins in vivo.
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DOI:
10.1371/journal.pone.0099395
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发表时间:
2014
期刊:
影响因子:
3.7
通讯作者:
Kramer G
中科院分区:
文献类型:
--
作者:
Hsieh TY;Nillegoda NB;Tyedmers J;Bukau B;Mogk A;Kramer G
Incorporating fluorescent amino acids by suppression of the TAG amber codon is a useful tool for site-specific labeling of proteins and visualizing their localization in living cells. Here we use a plasmid encoded orthogonal tRNA/aminoacyl-tRNA synthetase pair to site-specifically label firefly luciferase with the environmentally sensitive fluorescent amino acid, 3-(6-acetylnaphthalen-2-ylamino)-2- aminopropanoic acid (ANAP) and explore the detectability of conformational changes in labeled luciferase in the yeast cytoplasm. We find that ANAP labeling efficiency is greatly increased in [PSI +] cells and show that analysis of the ANAP fluorescence emission by confocal imaging allows for tracking the thermal unfolding and aggregation of luciferase in vivo. Furthermore we demonstrate that flow cytometry can be used to study conformational changes in luciferase and chaperone-mediated refolding in quantitative terms and at the level of single cells. This experimental setup for the first time allows for the direct analysis of the folding state of a protein in living cells and may serve as valuable new tool for examining mechanisms of protein folding, misfolding and aggregation.
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影响因子:
11.4
作者:
STANSFIELD, I;JONES, KM;TUITE, MF
通讯作者:
TUITE, MF
影响因子:
13.8
作者:
Dobson, CM
通讯作者:
Dobson, CM
DOI:
10.1083/jcb.201106037
发表时间:
2011-11-14
期刊:
The Journal of cell biology
影响因子:
--
作者:
Specht S;Miller SB;Mogk A;Bukau B
通讯作者:
Bukau B
影响因子:
3.7
作者:
Sadlish H;Rampelt H;Shorter J;Wegrzyn RD;Andréasson C;Lindquist S;Bukau B
通讯作者:
Bukau B
影响因子:
15
作者:
Chatterjee A;Guo J;Lee HS;Schultz PG
通讯作者:
Schultz PG