Lecture#4 1-22 - #$ $/$#$ 0 12 3,4 51'5,63"246"3 7"8'0"2$3 There are 20 common amino acids Each amino acid has different character stereochemistry

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7"8 0+-#"2$3 There are 20 common amino acids Each amino acid has different character stereochemistry hydrophobicity or polarity ionization properties: basic, acidic hydrogen bonding Some peptides are biologically active (not as proteins) Amino acids are Zwitterions Charge of amino acids depends on pH
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!"9&-,-: ;<="#4>"3 Names single and triple letter abbreviations of 20 amino acids DeFne zwitterions General chemical properties (polar, non polar, h-bond donor, h-bond acceptor, hydrophobic, charged …) of each amino acid – (if easier, remember the structure) Approximate p K a s of functional groups, interpretation of their titration curves What is the pI Ionization properties of functional groups and what in±uences them How is p K a in±uence by its surrounding environment (ex charge residue in a hydrophobic environment) Determine the net charge of a small peptide
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This note was uploaded on 01/30/2010 for the course BIOC 460 taught by Professor Ziegler during the Spring '07 term at University of Arizona- Tucson.

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Lecture#4 1-22 - #$ $/$#$ 0 12 3,4 51'5,63"246"3 7"8'0"2$3 There are 20 common amino acids Each amino acid has different character stereochemistry

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