Chapter_3 - Chapter 3 Nucleotides and Nucleic Acids...

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N N N N H N N 1 Chapter 3 Nucleotides and Nucleic Acids nucleotide monomeric units of nucleic acids; compound consisting of a nucleoside esterifies to 1+ phosphate grps nucleic acid polynucleotide nucleoside when phosphate grp is absent nucleotide nitrogenous base sugar phosphate group purine pyrimidine adenine cytosine guanine thymine uracil pentose @ N9 pentose @N1 DNA RNA adenine guanine cytosine thymine uracil ATP adenosine triphosphate FAD flavin adenine dinucleotide Adenosine linked by 2 phosphate groups to riboflavin (vitamin B 2 ) NAD + nicotinamide adenine dinucleotide adosine is linked via 2 phosphate grps to NADP + nicotinamide adenine dinucleotide phosphate Coenzyme A (CoA) -carrier of acyl grps [CH 3 (CH 2 ) n CO-]; linked to sulfhydryl grp -derived from pantothenic acid (Vitamin B 3 ) The phosphates are acidic therefore nucleic acids are polyanions phosphodiester bond linkage between individual nucleotides 5’ end C5’ nucleotide 3’ end C3’ nucleotide
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Chapter_3 - Chapter 3 Nucleotides and Nucleic Acids...

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