Which amino acid residues were incorporated into compound 1 to promote the adhesion of cells on the scaffold surfaces?

Answer :Aspartic acid  and Arginine acid.They  are both  important in amino acid biosynthesis. However,Arg  is an essential Aa in human and rodents.while Asp is produced during transamination of oxaloacetate.It is important in Urea cylcle as Nitrogen donor.

Based on the description of the molecule 1, all the described  5 regions have distinct features.However affinity to the other cells is most prominent at the 5th regions of description.A cursory look at the structure showed two amino acids structure as  simple amino acids  Aspartic and Arginine.These two promotes adhesion of cells on scaffold surfaces.

Explanation: