translate English to German: Because glycine is the smallest amino acid, it plays a unique role in fibrous structural proteins. In collagen, Gly is required at every third position because the assembly of the triple helix puts this residue at the interior (axis) of the helix, where there is no space for a larger side group than glycine’s single hydrogen atom .
siehe auch: Gelatine (denaturierte Form von fibrillärem Kollagen Typ I, II und/oder III, meist aus Schlachtabfällen gewonnen).