清华大学：《生物化学》课程PPT教学课件（英文版）Nucleotides and Nucleic Acids（1/2）

Bases Nucleosides and Nucleotides

Bases, Nucleosides, and Nucleotides

Bases H2N N C NH2 CH3 U dX X

Bases T U C G A

Structure of T and c Thymine Cytosine CA N3 N3 C5 C2 C6 C2

Structure of T and C

Structure of A and G Adenine NHo Guanine C6 N7 C5 N1 C5 N1 C8 C4 C2 CA C2 N9 N3

Structure of A and G

Deoxyribose and Ribose c比ho OH CH2 OH H H H OH OH Deoxyribose D-Ribose

Deoxyribose and Ribose