Answer
Glucoseaminoglycan (GAG) is a negativity charged component of extracellular matrix. So it will interact with the proteins that have positively charged amino acids (histidine, arginine, lysine). So, fibroblasts growth factor should should contain these negativity charged (basic in nature) amino acids.
Work Step by Step
Glucoseaminoglycan (GAG) is a negativity charged component of extracellular matrix. So it will interact with the proteins that have positively charged amino acids (histidine, arginine, lysine). So, fibroblasts growth factor should should contain these negativity charged (basic in nature) amino acids.
