This course is a simple introduction to peptide science. Peptides are short chains of amino acids that play a key role in biological signaling. You’ll learn how they are formed, how structure and sequence affect function, and how they differ from proteins. We cover: • Peptide bond formation • Amino acids and structure • Peptide vs protein differences • Chain length classification By the end, you’ll have a solid foundation to understand how peptides are used in research and lab studies.

This course explains how peptides function as cell signaling molecules through receptor binding and intracellular pathways. You’ll learn how peptide structure and sequence influence receptor interaction, signal transduction, and biological response. Key topics include receptor binding, GPCR signaling, second messengers, hormonal regulation, and peptide stability. By the end, you’ll understand the core mechanisms that drive peptide activity in research settings.