What's the importance of green fluorescent protein (GFP)?

Green Fluorescent Protein is important since it is used as a biological marker and naturally emits green light when exposed to blue or UV light. This property allows scientists to track and visualize the location and movement of GFP-tagged proteins within cells without the need for additional labeling. Additionally, GPF is important since it is used in promoter and protein fusion experiments and is widespread for studying gene expression patterns.