Acer executives promote the company's new BYOC strategy. Acer CEO Jason Chen is on far left. Acer Chairman Stan Shih is second to the left. Although the new cloud apps are free, the company wants to include extra features users can choose to pay for.
All proteins are made up of combinations of 20 different amino acids. The RNA code (like DNA) is written in just four different chemical 'letters' - bases. How can a code with four letters identify 20 different amino acids? By reading it three letters at a time - CAU, CAG, GGA, etc.
Proteins form the basic machinery of all cells. Proteins are made out of amino acids. Amino acids are not interchangeable: to synthesize a protein, each one of its constituent amino acids must be available. Many amino acids are essentialâwe cannot synthesize them, and therefore must ingest them as part of our diet.