Asparagine is a non-essential amino acid, meaning the body can produce it and it is not required to be obtained through diet. It plays a crucial role in protein synthesis and is involved in the metabolism of nitrogen in the body. Asparagine is found in various foods, including dairy products, meat, fish, eggs, and some vegetables. This amino acid is important for the proper functioning of the nervous system and contributes to the production of other amino acids. It is also involved in the synthesis of nucleotides, which are essential for DNA and RNA production, making it vital for cell growth and repair.