The molecules used for translation account for more than 35%o of the cells dry weight However, proteins are synthesized with very high efficiency: a complete polypeptide chain of 100 residues is synthesized in about 5 seconds in an E coli cells at 37oc• The molecules used for translation account for more than 35% of the cell’s dry weight. • However, proteins are synthesized with very high efficiency: a complete polypeptide chain of 100 residues is synthesized in about 5 seconds in an E.coli cells at 37oC