BIO120H1 Lecture Notes - Lecture 14: Deoxyribonucleoside, Tomato Bushy Stunt Virus, Peptide
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BIO120H1 Full Course Notes
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Document Summary
Lecture 2 intro to nucleic acids & proteins: dna is synthesized from deoxyribonucleoside triphosphates, otherwise known as: dntp"s things that are used to make this linear structure. 2 phosphates get removed during this process: rna is synthesized from ribonucleoside triphosphates, or: ntp"s, nucleotides are linked by: phosphodiester bonds (through phosphate groups) Dna is double stranded while rna is single stranded in order for replication & transmission of info contained in dna strand, it needs to be double-stranded. H-bonds form, helping to keep 2 strands together. Info is always read 5" to 3" dna is composed of 2 antiparallel strands. Same info present on 1 strand is on other b/c of complementarity of bases & this redundancy is extremely important for preservation of info. Dna structure is organized into double helix ladder twists around itself forming major groove & minor groove. Interactions with turns of helix make dna more stable. Strands can be unzipped (reversible can be reannealed).
