申请人:The Regents of the University of California
公开号:US20180057801A1
公开(公告)日:2018-03-01
A bioluminescent protein is provided that includes a substituted luciferase polypeptide having amino acid substitutions at positions 21 and 166, and with one or more additional amino acid substitutions at positions 3, 16, 20, 29, 30, 71, 87, 114, and 144, compared to the parent polypeptide. Also provided is a luciferin that has a selenium-containing group at position C8 of an imidazopyrazine backbone, and methods of making the luciferin. In addition, nucleic acids encoding the bioluminescent protein, cells expressing the bioluminescent protein, and reactions between the bioluminescent protein and luciferin substrates are also provided. Fusions between the substituted luciferase polypeptide and a fluorescent protein are also provided for bioluminescence resonance energy transfer based reporters.
提供了一种生物发光蛋白,其中包括一个替代的荧光酶多肽,在位置21和166处具有氨基酸替换,并在相对于母体多肽的位置3、16、20、29、30、71、87、114和144处具有一个或多个额外的氨基酸替换。还提供了一种荧光素,其在咪唑吡嗪骨架的C8位置具有含硒基团,以及制备荧光素的方法。此外,还提供了编码生物发光蛋白的核酸、表达生物发光蛋白的细胞以及生物发光蛋白和荧光素底物之间的反应。还提供了替代荧光酶多肽和荧光蛋白之间的融合,用于生物发光共振能量转移基础的报告。