Glycine
Sorry, the answer is incorrect. Glycine is not a carbohydrate; it is the simplest of the 20 standard amino acids. Glycine is a non-essential amino acid, which means that cells of the body are able to synthesize sufficient amounts of the compound to meet physiological requirements. This is the second most common amino acid found in proteins and enzymes. In vertebrate animals, glycine is also a neurotransmitter and can be found in the spinal cord and the central nervous system.