核苷 6 HOCH2 HOCH2 4 6 51 H H H H 3 OHOH H H 9 OH OH B-Ni-glycosidic bond in pyrimidine B-Ng-glycosidic ribonucleosides bond in purine ribonucleosides
核苷
NH2 NH CH HN 0 -0- CH 0 0 -CH20 0-CH2 0 0 0 -CH2.0 H H H H OH H OH H Nucleotide: Deoxyadenylate Deoxyguanylate Deoxythymidylate Deoxyeytidylate (deoxyadenosine (deoxyguanosine (deoxythymidine (deoxycytidine 5'-monophosphate) 5'-monophosphate) 5-monophosphate) 5'-monophosphate】 Symbols: A,dA,dAMP G,dG,dGMP T.dT.dTMP C.dC,dCMP Nucleoside: Deoxyadenosine Deoxyguanosine Deoxythymidine Deoxycytidine (a)Deoxvribonucleotides NH2 HN HN 0 -0- CH2 0 H H H H H H OH OH OHOH OH OH OHOH Nucleotide:Adenylate (adenosine Guanylate(guanosine Uridylate(uridine Cytidylate(cytidine 5'-monophosphate) 5'-monophosphate) 5'-monophosphate 5'-monophosphate Symbols: A,AMP G,GMP U,UMP C,CMP Nucleoside: Adenosine Guanosine Uridine Cytidine (b)Ribonucleotides
顺式为主 H NH H2N NH2 HOCH2 HOCH2 HOCH2 H H H H H H H OH OH OH OH OHOH syn Guanosine anti Guanosine anti Uridine
顺式为主
核苷酸 (N=A、G、C、U、T) O-P CH2 N碱# 磷酸 5'磷酸核苷 H 3 H 酸的基本结构 OH (O)H 核糖
5´-磷酸核苷 酸的基本结构 O O （N = A、G、C、U、T） H H (O)H 1´ 2´ N OH CH2 H H 5´ 4´ 3´ O P - O O O - 核糖 磷酸 碱基 核苷酸
二 核苷酸的生物学功能 1携化学能核苷酸 2核酸的组成成分 0 01 0-P0-P0-P-0-CH2 Base Abbreviations of ribonucleoside Abbreviations of deoxyribonucleoside H 5'-phosphates 5'-phosphates Base Mono-Di- Tri- Base Mono-Di- Tri- OHOH Adenine AMP ADP ATP Adenine dAMP dADP dATP NMP Guanine GMP GDP GTP Guanine dGMP dGDP dGTP Cytosine CMP CDP CTP Cytosine dCMP dCDP dCTP NDP Uracil UMP UDP UTP Thymine dTMP dTDP dTTP ntp
二 核苷酸的生物学功能 1 携化学能核苷酸 2 核酸的组成成分 ～ ～