化学dnarna核酸由称为核苷酸单体线性阵列组成长线状聚合物所有.pdf

Nucleic Acids and RNA are nucleic acids, long, thread-like polymers made up of a linear array of monomers called nucleotides All nucleotides contain three components: 1. A nitrogen heterocyclic base 2. A pentose sugar 3. A phosphate residue Chemical Structure of vs RNA Ribonucleotides have a 2’-OH Deoxyribonucleotides have a 2’-H Bases are classified as Pyrimidines or Purines S ases The nucleus contains the cell’s (genome) RNA is synthesized in the nucleus and exported to the cyto sm Nucleus Cyto sm replication transcription RNA (mRNA) translation Proteins Deoxyribonucleotides found in dA dG dT dC Nucleotides are linked by phosphodiester bonds is double stranded Bases form a specific hydrogen bond pattern Properties of a double helix The strands of are antiparallel The strands are complimentary There are Hydrogen bond s There are base stacking in ctions There are 10 base pairs per turn is a Double-Helix Transcription of a molecule results in a mRNA molecule that is single- RNase P M1 RNA stranded. RNA molecules do not have a regular structure like .