adenine
基础科学

        A nitrogenous base found in DNAand RNA. It is also a constituent of certaincoenzymes,e.g. NAD and FAD,and whencombined with the sugar ribose it forms thenucleoside adenosine found in AMP,ADP,and ATP. Adenine has a purine ring struc-ture. See illustration ......（本文共 329 字）     [阅读本文] >>