Aequorea's secrets revealed: New fluorescent proteins with unique properties for bioimaging and biosensing.

Aequorea's secrets revealed: New fluorescent proteins with unique properties for bioimaging and biosensing.
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DOI:
10.1371/journal.pbio.3000936
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发表时间:
2020-11
期刊:
影响因子:
9.8
通讯作者:
Shaner NC
Shaner NC
中科院分区:
生物学1区
文献类型:
--
作者:
Lambert GG;Depernet H;Gotthard G;Schultz DT;Navizet I;Lambert T;Adams SR;Torreblanca-Zanca A;Chu M;Bindels DS;Levesque V;Nero Moffatt J;Salih A;Royant A;Shaner NC

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Using mRNA sequencing and de novo transcriptome assembly, we identified, cloned, and characterized 9 previously undiscovered fluorescent protein (FP) homologs from Aequorea victoria and a related Aequorea species, with most sequences highly divergent from A. victoria green fluorescent protein (avGFP). Among these FPs are the brightest green fluorescent protein (GFP) homolog yet characterized and a reversibly photochromic FP that responds to UV and blue light. Beyond green emitters, Aequorea species express purple- and blue-pigmented chromoproteins (CPs) with absorbances ranging from green to far-red, including 2 that are photoconvertible. X-ray crystallography revealed that Aequorea CPs contain a chemically novel chromophore with an unexpected crosslink to the main polypeptide chain. Because of the unique attributes of several of these newly discovered FPs, we expect that Aequorea will, once again, give rise to an entirely new generation of useful probes for bioimaging and biosensing. Aequorea victoria, the jellyfish that yielded GFP and transformed the study of living cells, held more secrets than first suspected. This study reveals that A. victoria and its Australian cousin encode a diverse set of unusual fluorescent proteins, including the brightest one ever described.
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