and other phosphates, including ATP (Adenosine triphosphate). The most
active form was the one of the polyphosphoric acid, in the presence of
which at a temperature of 70°C a polymer of 15 amino acids was obtained.
Depending on the temperature, the mean molecular weight has been
growing from 3600 at 160°C to 8600 at 200°C.
By thermal polymerization Fox and Harada have obtained various
peptides that vary in composition, molecular weight and other physicochemical
properties. One of the essential properties of the synthesized
product is its morphogenesis, i.e. the tendency to formation of
microspheres with sizes close to these of bacteria (Fig. 1–6).