Genetic encoding of a highly photostable, long lifetime fluorescent amino acid for imaging in mammalian cells.
Genetic encoding of a highly photostable, long lifetime fluorescent amino acid for imaging in mammalian cells.
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DOI:
10.1039/d1sc01914g
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发表时间:
2021-09-22
期刊:
影响因子:
8.4
通讯作者:
Petersson EJ
中科院分区:
文献类型:
--
作者:
Jones CM;Robkis DM;Blizzard RJ;Munari M;Venkatesh Y;Mihaila TS;Eddins AJ;Mehl RA;Zagotta WN;Gordon SE;Petersson EJ
Acridonylalanine (Acd) is a fluorescent amino acid that is highly photostable, with a high quantum yield and long fluorescence lifetime in water. These properties make it superior to existing genetically encodable fluorescent amino acids for monitoring protein interactions and conformational changes through fluorescence polarization or lifetime experiments, including fluorescence lifetime imaging microscopy (FLIM). Here, we report the genetic incorporation of Acd using engineered pyrrolysine tRNA synthetase (RS) mutants that allow for efficient Acd incorporation in both E. coli and mammalian cells. We compare protein yields and amino acid specificity for these Acd RSs to identify an optimal construct. We also demonstrate the use of Acd in FLIM, where its long lifetime provides strong contrast compared to endogenous fluorophores and engineered fluorescent proteins, which have lifetimes less than 5 ns. Acridonylalanine (Acd) is photostable, with a high quantum yield and long fluorescence lifetime in water. An evolved tRNA synthetase (RS) enables genetic incorporation of Acd in mammalian cells and its use in fluorescence lifetime imaging microscopy.
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DOI:
10.1039/c7cc05492k
发表时间:
2017-10-05
期刊:
Chemical communications (Cambridge, England)
影响因子:
--
作者:
Ferrie JJ;Ieda N;Haney CM;Walters CR;Sungwienwong I;Yoon J;Petersson EJ
通讯作者:
Petersson EJ
影响因子:
4.6
作者:
Aloush N;Schvartz T;König AI;Cohen S;Brozgol E;Tam B;Nachmias D;Ben-David O;Garini Y;Elia N;Arbely E
通讯作者:
Arbely E
DOI:
10.1073/pnas.1309584110
发表时间:
2013-07-16
影响因子:
11.1
作者:
Chatterjee, Abhishek;Xiao, Han;Schultz, Peter G.
通讯作者:
Schultz, Peter 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:
16.8
作者:
Dai, Gucan;Aman, Teresa K.;Zagotta, William N.
通讯作者:
Zagotta, William N.