Coenzymes - Nucleotides (cont.) 5 different kinds of bases...

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Coenzymes * Organic cofactors that are usually derived from niacin, riboflavin, and other water- soluble vitamins * They are electron acceptors and transporters Enzyme Classification * The names of enzymes usually end in the suffix -ase * Enzymes are grouped according to the types of chemical reactions they catalyze. * oxidases- add oxygen * dehydrogenases- remove hydrogen * hydrolases- add water * transferases- transfer groups of atoms Nucleic Acids * Polymers of monomers called nucleotides * serves as blueprint for protein synthesis * two types of nucleitides * DNA (deoxyribonucleic acid) * contains all the inheritable genetic information (genes) * RNA (ribonucleic acid) Nucleotide * each nucleotide has three parts * sugar- ribose (5C sugar) or deoxyribose * phosphate group- constant * nitrogenous base- variable
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Unformatted text preview: Nucleotides (cont.) 5 different kinds of bases in class into two goups * Purines * adenine, guanine * Pyrimidines * thymine, cytocine, uracis Nucleotides (Cont.) * DNA- A, G, C, T * RNA- A, G, C, U ATP * The bodies most important energy transfer molecule * Energy is in the phosphate bonds * Bonds hydrolyzed by adenosine triphosphatases (ATPases) * Much of the energy in ATP comes form glucose oxidation Phosphorylation by Kinases Guanosine Triphosphate (GTP) * Nucleotide involved in energy transfer * Activates the G protein in cell signaling Cyclic AMP (cAMP) * Formed from the removal of both second and third phosphate groups from ATP * Acts as second messenger to activate metabolic effects within the cell...
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Coenzymes - Nucleotides (cont.) 5 different kinds of bases...

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