Primary Structure of polypeptides
The primary structure is the sequence of amino acid residues, from the amino terminus to the carboxyl terminus. In this example, the succesive - N - C(R) - C- residue backbone is NH3 - R1 - R2 - R3 - R4 - R5 - R6 - COO
Figure © 2004 by Griffiths et al. ; All text material ©2010 by Steven M. Carr