OUTLINE 1 DNA Structure 2.DNA Topology 3.RNA Structure
OUTLINE 1.DNA Structure 2.DNA Topology 3.RNA Structure
DNA STRUCTURE
DNA STRUCTURE
DNA is composed of polynucleotide chains sssm Structure: twisting around each o other in the form of a double helix
DNA STRUCTURE ( ) 1 DNA is composed of polynucleotide chains Structure: twisting around each other in the form of a double helix
Schematic model Space-filling model hydrogen bond base 12A sugar-phasphate minor (1.2 henbane groove r 5西 najor(2.2 nm) groove A 3° 5 T H o Cin phosphate C andN P 20 A(2 nm) ester chain in bases
Schematic model Space-filling model
Nucleoside nucleotide, the fundamental building block of DNa ● 2-deoxyribose HO: CH base H phosphoric acid phosphoester bond O—P-OcH H nucleotide (damglycosidic bond Copyright o 2004 Pearson Education, Inc, publishing as Benjamin Cummings
Nucleoside & Nucleotide, the fundamental building block of DNA glycosidic bond phosphoester bond