The invention discloses a NgAGO-VP64
fusion protein, a guided
DNA (gDNA) and a method for targetedly activating
gene transcription on the basis of natronobacterium gregoryi
Argonaute (NgAGO). The sequence of the NgAGO-VP64
fusion protein is shown as SEQ ID NO.1 or SEQ ID NO.2. The guided
DNA is any one or more of mixtures among sequence segment shown as SEQ ID NO.3-12. By utilizing the NgAGO-VP64
fusion protein, the guided
DNA and
transfection reagent to cotransfect cells, endogenous
gene transcription can be targetedly activated. The invention proves that NgAGO has the capability of combining with the guided DNA and identifying target
genome DNA. The invention discovers for the first time that the fusion
protein constructed from NgAGO and VP64 has the capability of activating endogenous
gene in cells. The invention solves the problem that people doubt the application of NgAGO recently, and provides support for the development of target
genome editing tools and other tools.