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Peptides are small molecules that are composed of two or more amino acids. They are found in all living cells and play a variety of roles in the body. Peptides can be divided into three main categories: signalling peptides, storage peptides, and antimicrobial peptides.
Signalling peptides are involved in transmitting messages between cells. They can be found in the brain, where they help to regulate mood and memory, or in the immune system, where they help to fight infection. Storage peptides are responsible for storing energy and nutrients in the body. Antimicrobial peptides are part of the body’s natural defence system, working to kill bacteria and viruses.
Peptides have a wide range of potential applications in medicine. They can be used to treat conditions such as obesity, diabetes, heart disease, and cancer. Peptides can also be used as vaccines, drugs that target specific proteins in the body, or as diagnostic tools to identify diseases at an early stage.