MBIO 2020 Lecture Notes - Lecture 1: Purine, Deoxyribose, Ribosomal Rna
1 Jun 2017
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Document Summary
Heteropolymer (a polymer derived from two or more different types of monomer) of nucleotides. Carries genetic info of all organisms: mono, di or triphosphate. Named from the carbon out alpha beta and gamma. Differences in rna and dna: dna is the long-term storage of genetic information. Rna divides into 3 other short term information system. (rrna and trna are enzymatically active themselves: regulatory rna interferes with the function and stops or regulates it. A, g, c are found in all organisms. Uracil and thymine in prokaryotes and eukaryotes respectively. Adenine forms 2 h- bonds with thymine a=t. Always from 5" to 3": double stranded (double helix, nucelotide monophosphates (3",5" phosphodiester bonds, oriented in opposite directions. If one is oriented 5" to 3": other is oriented to 3" to 5", held together by h- bonds, n bases on adjacent strands i. e. base pairs. Purine in one strand is pyrimidine in the other.
