"I + G" could refer to the compound isoleucine and glycine, which are amino acids used in various chemical and biological processes. Isoleucine is an essential amino acid, meaning it must be obtained from the diet, and it plays a crucial role in protein synthesis and energy production. Glycine is a non-essential amino acid involved in the synthesis of proteins, nucleic acids, and other important molecules in the body. Together, they can be utilized in biochemical research, pharmaceuticals, and other industrial applications.