Synthesis of luciferin glycosides as substrates for novel ultrasensitive enzyme assays
作者:Robert Amess、Neil Baggett、Paul R. Darby、Anthony R. Goode、Ernest E. Vickers
DOI:10.1016/0008-6215(90)80142-p
日期:1990.9
deacetylation, gave the firefly luciferin β-glycosides that were substrates for the corresponding glycohydrolases. The liberated luciferin was determined by fluorescence spectroscopy and, in one instance, by coupled-bioluminescence assay with firefly luciferase. The amount of luciferin released and determined by bioluminescence assay, was only ∼65% of that determined by fluorescence spectroscopy, which
A simple reaction procedure for chemiluminescence of firefly luciferin (d-luc) using n-propylphosphonic anhydride (T3P) is reported. A luminescent photon is produced as a result of one-pot reaction, only requiring mixing with the substrate carboxylic acid and T3P in the presence of a mild organic base.
Bioluminescence Imaging of Carbon Monoxide in Living Cells and Nude Mice Based on Pd<sup>0</sup>-Mediated Tsuji–Trost Reaction
作者:Xiaodong Tian、Xinda Liu、Anni Wang、Choiwan Lau、Jianzhong Lu
DOI:10.1021/acs.analchem.8b01102
日期:2018.5.1
challenge due to background interference, light scattering, and photoactivation/photobleaching. Herein, a novel type of bioluminescence probe (allyl-luciferin) was synthesized and exploited to realize CO imaging with high signal-to-noise ratios. Based on Pd0-mediated Tsuji–Trost reaction, allyl-luciferin specifically reacted with CO to yield D-luciferin and thus generate a turn-on bioluminescence response
Catalytic Properties of Domain-Exchanged Chimeric Proteins between Firefly Luciferase and<i>Drosophila</i>Fatty Acyl-CoA Synthetase CG6178
作者:Yuichi OBA、Kiichi TANAKA、Satoshi INOUYE
DOI:10.1271/bbb.60364
日期:2006.11.23
Firefly luciferase and fatty acyl-CoA synthetase are members of the acyl-CoA synthetase super family, which consists of a large N-terminal domain and a small C-terminal domain. Previously we found that firefly luciferase has fatty acyl-CoA synthetic activity, and also identified that the homolog of firefly luciferase in Drosophila melanogaster (CG6178) is a fatty acyl-CoA synthetase and is not a luciferase. In this study, we constructed chimeric proteins by exchanging the domain between Photinus pyralis luciferase (PpLase) and Drosophila CG6178, and determined luminescence and fatty acyl-CoA synthetic activities. A chimeric protein with the N-terminal domain of PpLase and the C-terminal domain of CG6178 (Pp/Dm) had luminescence activity, showing approximately 4% of the activity of wild-type luciferase. The Pp/Dm protein also had fatty acyl-CoA synthetic activity and the substrate specificity was similar to PpLase. In contrast, a chimeric protein with the N-terminal domain of CG6178 and the C-terminal of PpLase (Dm/Pp) had only fatty acyl-CoA synthetase activity, and the substrate specificity was similar to CG6178. These results suggest that the N-terminal domain of firefly luciferase is essential for substrate recognition, and that the C-terminal domain is indispensable but not specialized for the luminescence reaction.
萤火虫荧光素酶和脂肪酰基-CoA合成酶是酰基-CoA合成酶超家族的成员,后者由一个大的N端结构域和一个小的C端结构域组成。此前我们发现萤火虫荧光素酶具有脂肪酰-CoA合成活性,同时还发现黑腹果蝇中萤火虫荧光素酶的同源物(CG6178)是脂肪酰-CoA合成酶,而不是荧光素酶。在这项研究中,我们通过交换Photinus pyralis荧光素酶(PpLase)和果蝇CG6178之间的结构域构建了嵌合蛋白,并测定了发光和脂肪酰-CoA合成活性。具有 PpLase N 端结构域和 CG6178 C 端结构域的嵌合蛋白(Pp/Dm)具有发光活性,其活性约为野生型荧光素酶的 4%。Pp/Dm 蛋白还具有脂肪酸酰-CoA 合成活性,其底物特异性与 PpLase 相似。相比之下,具有 CG6178 N 端结构域和 PpLase C 端结构域的嵌合蛋白(Dm/Pp)只有脂肪酰-CoA 合成酶活性,底物特异性与 CG6178 相似。这些结果表明,萤火虫荧光素酶的 N 端结构域对于底物识别是必不可少的,而 C 端结构域对于发光反应是不可或缺的,但并不专一。