TE buffer is widely used in molecular biology for the storage and dilution of nucleic acids, particularly DNA and RNA. It helps maintain the stability of these molecules by providing a suitable pH environment and chelating metal ions that could degrade nucleic acids. TE buffer is essential in procedures like PCR, gel electrophoresis, and plasmid purification, where it ensures the integrity of DNA during handling and storage. Additionally, it is used in DNA sequencing and hybridization experiments to prevent enzymatic degradation. Its simplicity and effectiveness make it a staple in laboratories working with genetic material.