ETS Like-1 protein (ELK1) is a transcription factor that regulates gene expression in the MAPK pathway, which plays a central role in regulating cell proliferation, differentiation, survival, and stress responses. The ELK1 luciferase reporter vector is designed to study the transcriptional activity of ELK1. The vector contains an ELK1 DNA consensus binding site and TA minimal promoter upstream of a firefly luciferase reporter gene, which can specifically report ELK1 activity while maintaining a low basal level of transcription.