Biotechnology. Atypical aminoacids III

This paper presents the evolution of the metabolism from the binary to quat ernary to forme the structure of the alpha-aminoacids.,In this direction ar e 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-am ino acidic compounds from the serine family. The serine itself is presented , as an intermediary between the structures of the glicocole and of the tri ptophane. Are also cemented the structurale aspects of the synthesis of cyc loserine with the conclusion that the structurally rull is the minimum leve l of participation of : the two functional groups (ie.-NH2 and -COOH).