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Base Sugar Acid Basic Structure of Nucleic Acids Monophosphate Diphosphate Triphosphate Adenine Guanine Thymine Cytosine Uracil Nucleoside (Adenosine) cleotide (Adenosine monophosphate, AM Purine Pyrimidine 核核 核核核 核 核核核 Ribose, Deoxyribose 核 核 1’ 2’ 3’ 4’ 5’ Juang RH (2004) BCbasics

NA01 structure.ppt

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  • Basic Structure of Nucleic AcidsMonophosphateDiphosphateTriphosphateAdenineGuanineThymineCytosineUracilNucleoside (Adenosine)Nucleotide (Adenosine monophosphate, AMP) Juang RH (2004) BCbasics

  • Nucleotides Linked by Phosphodiester Bond OHPhosphodiester bond531235A kind of phospho-polysaccharidesJuang RH (2004) BCbasics

  • The Notation for Nucleic AcidsPRBPOH535 pApTpCpGpApTpCpG-OH 35 pATCGATCG-OH 3ATCGATCGJuang RH (2004) BCbasics

  • The Two Chains of DNA Are Antiparallel5 pCpGpApTpCpGpApT-OH 35 pApTpCpGpApTpCpG-OH 35335Juang RH (2004) BCbasics

  • Large grooveSmall groove1 Twist = 10.5 bp36 Characteristics of Double Helix Juang RH (2004) BCbasics

    (ribose) (deoxyribose)DNA RNA ATP dATP (1) 3-OH (2) 5- (phosphodiester bond) -OH 5-P 3-OH N- C- N-C-C-N-C-C-N-C - P-R-P-R-P-R (R) 1 5 1 (B)5 (P) p p 5 3 DNA 5-3 DNA B DNA 10.5 bp 3.6 nm DNA DNA DNA DNA (TE buffer)