Nucleoside 2-deoxyribose A 5 O—P—OH"HOCH OH base phosphoric acid 钻〓〓〓〓〓〓〓〓百〓〓〓〓〓〓〓〓〓〓〓〓〓〓百〓〓〓〓〓〓〓〓〓孟〓〓〓百〓百〓百孟百百百a孟 HO phosphoester bond N H HO glycosidic bond nucleotide(dAMP Copyright o 2004 Pearson Education, Inc, publishing as Benjamin Cummingsglycosidic bond phosphoester bond Nucleoside