Protein electrophoresis is a key technology for separating and analyzing proteins. It uses an electric field to move proteins in a gel to separate molecules with similar sizes and different charges. This method can be used to study protein structure, detect protein content, verify protein purity, and help identify disease markers. Protein electrophoresis is widely used in the fields of molecular biology, biochemistry and clinical research, providing scientists with an effective means to deeply explore protein functions and interactions.