The catalytic site of chymotrypsin contains an interior aspartic acid hydrogen-bonded to a histidine which in its turn is hydrogen-bonded to a serine. Polarization of the system due to the buried ...

In the present communication the synthesis of poly-aspartic acid is dealt with as an example of the polymerization of a trifunctional acidic α-amino-acid.

Amino acids are characterized by their central carbon atom, known as the α-carbon, which is bonded to an amino group (-NH2), a carboxyl group (-COOH), a hydrogen atom, and a variable side chain ...