Biology And Biomedical Sciences BIOL 2960 Lecture Notes - Lecture 3: Beta Sheet, Hydroxy Group, Protein Structure
11 Apr 2016
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Hydroxyl: oh: alcohol, polar; h bonds w/ water to help dissolve, helps linkage via condensation. Aldehyde: h-c=o: c=o very reactive; helps build molecules & helps energy- releasing rxns. Ketone: c=o (in middle of molecule: important in carbs & energy rxns. Carboxyl: cooh: carboxylic acid, so acidic, ionizes to coo- & h+ in living tissue, enters condensation by giving up oh, important in energy-releasing rxns. Amino: nh2: amine, basic, accepts h+ in living tissue forming nh3, enters condensation by giving up h+ 2: organic phosphate, acidic; condenses giving up oh, releases lots of energy when bonded to another phosphate (atp!!!) Sulfhydryl: sh: thiol, giving up h, 2 sulfhydryls react to form disulfide bridge, stabilizing protein structure. Structural: differ in how atoms joined together. Cis-trans: double bonded carbons, if groups on same side of double bond, then cis, if not then trans.
