The Structure of Collagen and Gelatin

The Structure of Collagen and Gelatin William F. Harrington and Peter H. Von Hippel... 

Sung N-H (1972) Structure and properties of collagen and gelatin in the hydrated and anhydrous solid state. ScD Thesis, Massachusetts Institute of Technology, Cambridge, MA... 

Fig. 167. Chemical structures of the most important amino adds of collagen and gelatin...

Glycine Glycine is contained in a significant amount (25—30%) mainly in the structural protein collagen and in gelatine in the majority of albumins it is not present at all (average content is 7.5%). 

Cohen (4) has suggested that the high equilibrium specific rotation of gelatin at low temperature is due to a partial regaining of the helical structure of collagen. In order to regain such a structure, it would be necessary to impose severe restrictions on the molecule. As pointed out by Ferry and Eldridge (5),... 

Nature often uses cystine knots of variable complexity to assemble polypeptide chains in the correct order and to stabilize the structure of the resulting proteins. Classical examples are proteins of the extracellular matrix with collagens and gelatines as the main components. This simple cystine-knot approach has been applied to synthetic constructs to ligate in a desired order helix bundles. [166 170 194-1%] It has also been used to mimic natural multiple-chain containing proteins like collagen.[83 1691971... 

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