22 20 Oct 2010

22 20 Oct 2010 - LEHNINGER PRINCIPLES OF BIOCHEMISTRY Fifth...

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Unformatted text preview: LEHNINGER PRINCIPLES OF BIOCHEMISTRY Fifth Edition David L. Nelson and Michael M. Cox 2008 W. H. Freeman and Company CHAPTER 8 Nucleotides and Nucleic Acids Nomenclature Deoxyribonucleic acids (DNA) linear polymers of deoxyribo- nucleotides Ribonucleic acids (RNA) linear polymers of ribonucleotides Nucleosides nitrogenous aromatic ring (base), and ribose or deoxyribose Nucleotides nitrogenous aromatic ring (base), ribose or deoxyribose, and phosphate Genome DNA which defines an organism (most are complimentary duplexes) Gene single sequence of DNA the encodes a protein Messenger RNA (mRNA) RNA compliment of DNA gene Transfer RNA (tRNA) couples mRNA to amino acids Ribosomal RNA (rRNA) RNA framework of ribosomes Nucleosides and Nucleotides Nucleosides have ribose (aldopentose, -D-furanose) or 2- deoxyribose with the anomer N-acetal coupled to a nitrogenous base Nucleotides are nucleosides with a phosphate anhydride coupling to the 5 position...
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22 20 Oct 2010 - LEHNINGER PRINCIPLES OF BIOCHEMISTRY Fifth...

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