The common property of all proteins is that they consist of long chains of amino alpha amino acids the general structure of amino acids is shown in the amino acids are so called because the carbon atom in the molecule carries an amino group nh 2 the carbon atom also carries a carboxyl group cooh. Proteins structures and molecular properties by creighton thomas e 1940 physical interactions that determine the properties of protein sequences physical interactions that determine the properties of proteins conformational properties of polypeptide chains the folded conformations of globular proteins proteins in solution . Proteins structures and molecular properties by t e creighton pp 515 w h freeman new york 1983 gbp3375 isbn 0 7167 1566 x the author of this book says he often felt the need for a text on the physical and chemical properties of proteins and such a text was not available. Proteins structures and molecular properties by t e creighton pp 515 w h freeman new york 1983 gbp3375 isbn 0 7167 1566 x the author of this book says he often felt the need for a text on the physical and chemical properties of proteins and such a text was not available