An isolated polynucleotide encoding a modified luciferase polypeptide and novel coelenterazine-based substrates. The OgLuc variant polypeptide has at least 60% amino acid sequence identity to SEQ ID NO: 1 and at least one amino acid substitution at a position corresponding to an amino acid in SEQ ID NO: 1. The OgLuc variant polypeptide has at least one of enhanced luminescence, enhanced signal stability, and enhanced protein stability relative to the corresponding polypeptide of the wild-type
Oplophorus
luciferase.
一个编码改良荧光酶
多肽和新型
荧光素基底底物的孤立的多聚核苷酸。OgLuc变体
多肽至少具有与
SEQ ID NO: 1的
氨基酸序列相似性达到60%,并且至少在一个位置上具有至少一种
氨基酸替换,该位置对应于
SEQ ID NO: 1中的
氨基酸。OgLuc变体
多肽至少具有增强的发光性、增强的信号稳定性和增强的蛋白稳定性中的至少一种,相对于野生型Oplophoruslucifera
SE的相应
多肽。