Synthesis and Spectroscopic Studies of Model Red Fluorescent Protein Chromophores
摘要:
Here we describe the synthesis and spectroscopic characterization of two compounds designed to model the chromophore in DsRed, a red fluorescent protein. Comparison with model green fluorescent protein (GFP) chromophores indicates that the additional conjugation in the DsRed models can account, in part, for the red-shifted absorption and emission properties of DsRed compared to those of GFP. In contrast to the GFP models, the DsRed models are fluorescent with quantum yields of 0.002-0.01 in CHCl3.
Red‐Shifted Substrates for FAST Fluorogen‐Activating Protein Based on the GFP‐Like Chromophores
作者:Natalia V. Povarova、Snizhana O. Zaitseva、Nadezhda S. Baleeva、Alexander Yu. Smirnov、Ivan N. Myasnyanko、Marina B. Zagudaylova、Nina G. Bozhanova、Dmitriy A. Gorbachev、Kseniya K. Malyshevskaya、Alexey S. Gavrikov、Alexander S. Mishin、Mikhail S. Baranov
DOI:10.1002/chem.201901151
日期:2019.7.22
A genetically encoded fluorescent tag for livecell microscopy is presented. This tag is composed of previously published fluorogen‐activating protein FAST and a novel fluorogenic derivative of greenfluorescentprotein (GFP)‐like chromophore with red fluorescence. The reversible binding of the novel fluorogen and FAST is accompanied by three orders of magnitude increase in red fluorescence (580–650 nm)