Biology 1202B Lecture Notes - Lecture 18: Rna World, Ribozyme, Pseudoknot
21 Mar 2016
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Before dna rna world: dna rna protein. Rna catalyzes chemical reacion taken place by the rna itself. Served dna and protein like funcions: dna and protein did their jobs beter than rna, dna is more stable than rna because it has two strands and each strand has an adjacent strand o o o o o. Life requires the ability to catalyze reacions that lead directly or indirectly to the producion of more molecules like themselves. Rna has the unique potenial to act as both informaion carrier and catalyst. Assembly of rna polymers in the rna world is random. Funcion will depend on sequence = structure: which property of rna allows some rna molecules to act as catalysts (ribozymes), they are single stranded molecules which can fold into very speciic shapes. o. Single stranded rna can fold into many diferent structures. These teriary structures are criical to the enzymaic abiliies o o.
