Anabolism (Ch.10) Small molecules ==>Large molecules Large molecules 1.) Purines, pyrimidines 2.) Active nucleotides 3.) Deoxynucleotides 4.) Amino acids 5.) Lipids 6.) Tetrapyrrole 7.) Carbonhydrates Purines, Pyrimidines Purines are synthesized thru the HM pathway Starting point is R5P Final product= inosine monophosphate (IMP) Pyrimidines Relies on amino acid participation ( three amino acids-glycine, glutamine, aspartate) for ring formation. Final product= uridine monophosphate (UMP) Active Nucleotides From UMP and IMP=> AMP, GTP, CTP, UTP Exist in various phosphorylated forms (mono, di, tri( i.e. AMP). They form after the ring formation of purines and pyrimidines. Purines =>C, T, U (single ring) Pyrimidines => A, G (double ring) Deoxynucleotides Activated nucleotides=>doxynucleotides (dTTP, dATP, dCTP, dUDP, dGTP) Deoxy forms are generated by a reduction process. Deoxynucleotides become DNA and RNA molecules. Amino Acid Derived from intermediates from critical pathways, TCA. Six families are synthesized. Pyruvate, serine, aspartate, OCC, AKG, aromatic, histidine Lysine - separate formation Uses the aspartic acid pathway- methionine, isoleucine Lipids Derived from DHAP. Important in membrane structure Wide variety of lipids exist-UDPR, electron carriers, etc. Tetrapyrole Derived from succinate CoA. Components of cytochrome pigments, vitamin B12 Carbohydrates 1.) Galactose Enters at DHAP Galactose formation 1.) Lactose Enters at the G6P