Asparagine (Asn, or N) is an organic compound found in proteins and a variety of other molecules. It plays an important role as an essential part of the structure of proteins, as well as contributing to their activity. Asparagine is a water-soluble, branched-chain amino acid, with its main function being in the formation of proteins. It also plays a role in the formation of other molecules, including the neurotransmitter glutamate and several enzymes. In addition, it is involved in the transport of certain molecules across cell membranes, and is important for cellular signalling. Asparagine can be found in a variety of foods, including many vegetables, grains, nuts, and dairy products. It is an important part of a healthy diet and can help maintain a balanced supply of nutrients to the body.