Proteins are linear polymers formed by linking the a-carboxyl group of one amino acid to the a-amino group of another amino acid. This type of linkage is called a peptide bond or an amide bond. The formation of a dipeptide from two amino acids is accompanied by the loss of a water molecule.
Release date. The Galaxy S8 and S8+ are both available to pre-order from Wednesday 29 March, with early buyers set to receive their handset on 20 April. The smartphones will be available to all from 28 April.
The Audi A8 (Typ 4D) was presented in February 1994 and debuted at the 1994 Geneva Auto Show in March, with full-scale factory production commencing in June 1994, although it was not until October 1996, for the 1997 model year that it became available in North America.