biochem2

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    Alanine

    Ala

    • non polar
    • aliphatic
    • hydrophobic
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    • Valine
    • Val

    • non polar
    • aliphatic
    • hydrophobic
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    glycine

    Gy

    • only one with asymmetric alpha carbon
    • no beta carbon
    • nonpolar
    • aliphatic
    • hydrophobic
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    isoleucine

    Ile

    • non polar
    • aliphatic
    • hydrophobic
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    leucine

    Leu

    • non polar
    • aliphatic  
    • hydrophobic
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    • proline
    • Pro

    • non polar
    • aliphatic  
    • hydrophobic
    • restricts conformations
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    methionine

    met

    • non polar
    • aliphatic  
    • hydrophobic
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    phenyalanine

    Phe

    • aromatic
    • hydrophobic
    • often interior of water soluble proteins
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    • tyrosine
    • Tyr

    • Aromatic
    • Slightly polar
    • Phosphate acceptors in protein tyrosine kinase rxs
    • Protein surfaces
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    • tryptophan
    • Trp

    • aromatic
    • hydrophobic
    • often interior
    • slightly polar
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    Serine

    Ser

    • Polar
    • Uncharged
    • Int and ext
    • H+ bond -important for structure
    • Often serve as phosphate acceptors in protein serine kinase rxs
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    • threonine
    • Thr

    • Polar
    • Uncharged
    • Int and ext
    • H+ bond -important for structure
    • Oftenserve as phosphate acceptors in protein serine kinase rxs
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    • asparagine
    • Asn

    • polar
    • uncharged
    • int and ext
    • H+ bonds important in structure
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    • cysteine
    • Cys

    • Polar
    • Uncharged
    • Int and ext
    • H+ bond -important for structure
    • Disulfide bridges with other –SH
    • Dimer called cysteine – often in protein structure crosslinks polypeptide chains
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    • glutamine
    • Gln

    • polar
    • uncharged
    • int and ext
    • H+ bonds important in structure
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    • Aspartate
    • Asp

    • ionizable side chain
    • carboxyl side chain
    • Acidic
    • negatively charged
    • deprotonated at pH = 7
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    • glutamate
    • Glu

    • ionizable side chain
    • carboxyl side chain
    • Acidic
    • negatively charged
    • deprotonated at pH = 7
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    • lysine
    • Lys

    • ionizable side chain
    • basic
    • positively charged
    • proton acceptors
    • protonation state will define net charge at given pH
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    • arginine
    • Arg

    • ionizable side chain
    • basic
    • positively charged
    • proton acceptors
    • protonation state will define net charge at given pH
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    • histidine
    • His

    • ionizable side chain
    • basic
    • positively charged
    • proton acceptors
    • protonation state will define net charge at given pH
Author:
branditolman
ID:
166093
Card Set:
biochem2
Updated:
2012-08-15 04:40:02
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AA
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