Site-Specific Incorporation of a Photoactivatable Fluorescent Amino Acid.
Site-Specific Incorporation of a Photoactivatable Fluorescent Amino Acid.
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DOI:
10.1002/cbic.202000602
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发表时间:
2021-02-02
期刊:
影响因子:
--
通讯作者:
Xiao H
中科院分区:
文献类型:
--
作者:
Tang J;Yu C;Loredo A;Chen Y;Xiao H
Photoactivatable fluorophores are emerging optical probes for biological applications. Most photoactivatable fluorophores are relatively large in size and need to be activated using ultraviolet light, dramatically limiting their applications. To introduce photoactivatable fluorophores into proteins, recent investigations have explored several protein labeling technologies, including fluorescein arsenical hairpin (FlAsH) Tag, HaloTag labeling, SNAPTag labeling, and bioorthogonal conjugation. However, these techniques require a multi-step labeling process. Here, by using Genetic Code Expansion and a single sulfur-for-oxygen atom replacement within an existing fluorescent amino acid, we have site-specifically incorporated the photoactivatable fluorescent amino acid thioacridonylalanine (SAcd) into proteins in a single step. Moreover, upon exposure to visible light, SAcd can be efficiently desulfurized to its oxo derivatives, thus restoring the strong fluorescence of labeled proteins. A photoactivatable amino acid designed based on thio-caging strategy has been genetically incorporated at specific sites in proteins. It can be successfully turned on at both small molecule and protein levels by visible light.
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DOI:
10.1039/c2pp05342j
发表时间:
2012-03
期刊:
Photochemical & photobiological sciences : Official journal of the European Photochemistry Association and the European Society for Photobiology
影响因子:
--
作者:
Li WH;Zheng G
通讯作者:
Zheng G
影响因子:
3.5
作者:
Hamada, H;Kameshima, N;Sisido, M
通讯作者:
Sisido, M
影响因子:
48
作者:
Grimm, Jonathan B.;English, Brian P.;Lavis, Luke D.
通讯作者:
Lavis, Luke D.
影响因子:
15
作者:
Chatterjee A;Guo J;Lee HS;Schultz PG
通讯作者:
Schultz PG
影响因子:
62.1
作者:
Klan, Petr;Solomek, Tomas;Bochet, Christian G.;Blanc, Aurelien;Givens, Richard;Rubina, Marina;Popik, Vladimir;Kostikov, Alexey;Wirz, Jakob
通讯作者:
Wirz, Jakob