BIO 1140 Lecture Notes - Lecture 13: Crystallography, Dna Virus, Multicellular Organism
Document Summary
No such thing as a structure of dna it is dynamic. Everything is bound to protein, dna and rna. It would be necessary to invent chromatin because you do not have free dna and. Rna floating around, it must be bound to proteins. There are four sugar bases: adenine, guanine, thymine, cytosine. The basic building blocks for rna and dna: 4 nitrogenous bases (a, c, g, t) A base is a purine or pyrimidine. A base + a pentose sugar = nucleoside. There are 5" monophosphates, 5" diphosphates, 5" triphosphates. 80% of proteins are modified after they"re translated. Many bases are modified; it is hard at times to distinguish this. (in dna and rna) Viroids are infectious rna, only affects plants. Infectious protein is the only one without nucleic acid intermediate. Defined transformation and terminology that we use, transforming principle. Transformation introducing a cell to another with the one taking over the.