If you want an introduction to amino acids, peptides and peptide synthesis, view this video lecture by Professor James S. Nowick at UC Irvine. It is a little over 1 hour and provides a good introduction to aminoa acids and peptide synthesis. http://www.youtube.com/watch?v=5o0VVMklQ3g

 

This short video by Lisa Mota and Brenda Miranda describes the roles that different amino acids play in the body.  http://youtu.be/391TXlzbWo8

 

This video from www.biology-forums.com illustrates through animation how peptides and proteins are synthesized biologically.  http://youtu.be/Ikq9AcBcohA