Polypeptide Bond Diagram. 1 b i which two. Free amino group end of the polypeptide chain.
A i draw a box on the diagram around the r group of serine and label the box with the letter r 1 ii draw a circle around each of the parts of the serine molecule which would be removed when two other amino acid molecules join directly to it. Therefore all hydrogen bonds in a ß sheet are between different segments of polypeptide. Bond angles in degrees are also shown for the peptide n and c atoms.
In most cases the peptide bonds in proteins are trans.
In most cases the peptide bonds in proteins are trans. Polypeptides make proteins by bonding together various amino acids. Two or more polypeptides bond and fold into a specific shape to form a particular protein. The amino acids are linked covalentlyby peptide bonds.