Pancreatic beta cells( cells)are known to be sensitive to glucose concentrations in the blood The human insulin protein is composed of 51 amino acids and has a molecular mass of 5808 Da insulin 1 3 glucose transporter-4, insulin receptor gly 4 ○ fatty acic ivateThe human insulin protein is composed of 51 amino acids, and has a molecular mass of 5808 Da Pancreatic beta cells (β cells) are known to be sensitive to glucose concentrations in the blood