Structure of nucleotides Major purine and pyrimidine bases

Structure of nucleotides

Major purine and pyrimidine bases of nucleic acids

Conformation of ribose

Deoxyribonucleotides of nucleic acids

Ribonucleotides

Some minor purine and pyrimidine bases, shown as the nucleoside

Some adenosine monophosphates

Phosphodiester linkage in the covalent backbone of DNA and RNA. The phosphodiester bonds link successive nucleotide units. The backbone of alternating pentose and phosphate groups in both types of nucleic acids are highly polar

Hydrolysis of RNA under alkaline conditions

Tautomeric forms of uracil

Absorption spectra of the common nucleotides

Hydrogen-binding patterns in the base pair defined by Watson and Crick

The Avery –Mac. Leod- Mc Carty experiment

The Avery –Mac. Leod- Mc Carty experiment…

The Hershy-Chase experiment

Watson-Crick model for the structure of DNA

Complemenetarity of strands in the DNA double helix

Replication of DNA as suggested by Watson and Crick

Structural variation in DNA

Comparison of A, B, and Z forms of DNA

Palindromes and mirror repeat

Hairpins and cruciforms

DNA structures containing three or four DNA strands (Hoogsteen pairing)

H-DNA

Prokaryotic m. RNA

Typical right-handed stacking pattern of single- stranded RNA

Secondary structure of RNA

Based-paired helical structures in an RNA

Three dimensional structure in RNA

Reversible denaturation and annealing (renaturation) of DNA

Heat denaturation of DNA