Fluorescent cross-linked RNase H mutant conjugate, miRNA combination and application thereof

Abstract

A fluorescent cross-linked RNase H mutant conjugate, a miRNA combination and an application thereof. The fluorescent cross-linked RNase H mutant conjugate (i) is as represented by RNase Hv-(Lx-SH-F)n or (ii) comprises an RNase Hv-Lx-ligand and receptor-F, wherein the ligand can bind to the receptor, RNase Hv is an RNase H mutant, which can bind to RNA or RNA-DNA hybrid strands, but cannot cleave RNA; L is a linker, and x is 1-10; SH is an amino acid containing a sulfhydryl group; F is a luminescent functional group, and n is 1-7. The fluorescent cross-linked RNase H mutant conjugate can directly recognize DNA/RNA hybrid strands and can be converted to generate detectable signals without PCR amplification, and can be applied to sensitively and quickly detect RNA.

Dependencies are inferred from the claim text.