PEPTID+ peptides

Proteins are also defined as a chain of up to hundreds of amino acids. Therefore, the distinction between a short protein and a long peptide is not unambiguous, and there are several definitions that distinguish between peptides and proteins. According to one definition, a peptide contains up to a certain number (eg 50) of amino acids, while a protein consists of more than 50 amino acids. According to another definition, peptides can be artificially synthesized, while proteins cannot be artificially synthesized by conventional means. Another definition states that a peptide has no biological function while a protein has a biological function. According to this definition, the same chain of amino acids can be both a protein and a peptide, depending on its biological context. In many cases, a peptide is part of a protein and performs certain tasks in place of the much longer protein. Peptides can be classified according to their length. For example, a dipeptide is made up of two amino acids, a tripeptide of three amino acids and a tetrapeptide of four. A nonapeptide is a peptide of 9 amino acids,