Proteins square measure fascinating macromolecules. all of them have completely different structures and functions. haemoprotein carries chemical element within the blood. endocrine binds to receptors on bound cell surfaces (the receptor being a macromolecule as well) and stimulates the uptake of aldohexose out of the blood. These square measure three samples of proteins occurring within the body however compromises concerning zero.005% of the proteins that square measure found within the body, the opposite 90 nine.995% of proteins every has its own distinctive structure and performance. learning of those proteins will become sophisticated but there arises a group pattern among all proteins that exist. Proteins square measure polymers of Amino Acids. Amino acids square measure organic compounds that share the subsequent basic structure.