Biotechnology. Atypical aminoacids III

This paper presents the evolution of the metabolism from the binary to quaternary to forme the structure of the alpha-aminoacids.,In this direction are discussed various representative structures like as: 2-amino-sugars; 3,4-dihydroxi-piroline; alpha-hidroxi-alpha-amino mixed compounds etc., as well its the basic structure of alpha-amino-acids from the informational point:of view. Is also presented the evolutive succession of the hydroxy-alpha-amino acidic compounds from the serine family. The serine itself is presented, as an intermediary between the structures of the glicocole and of the triptophane. Are also cemented the structurale aspects of the synthesis of cycloserine with the conclusion that the structurally rull is the minimum level of participation of : the two functional groups (ie.-NH2 and -COOH).