mately 20% of the collagen molecule. Collagen consists also
of L-arginine, L-glutamic acid, L-serine and L-5-hydro xylisine.
The presence of L-hydroxyproline affects the thermal stability
of collagen, whereas the stereo-electron effects are
responsible for stabilization of the collagen molecule. The
presence of an additional hydroxyl group at position Y
enables forming of hydrogen bonds between water molecules.
A single chain of collagen contains about 1000 amino
acid residues, forming amolecule with a length of 300 nm.
However, the quantitative composition of collagen depends
on the age of the mammal and the type of tissue it is a part
of [1, 4, 5].