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9 Cards in this Set
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- Back
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Amino Acids with Aliphatic Side Chains
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Valine, Leucine, Isoleucine, Methionine (hydrophobic, often found in the center of ptns away from water)
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Glycine
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Side Chain: H
Most structurally permissible aa |
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Proline
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Side Chain: ring, attached to N back bone
Most structurally restrictive aa |
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Aromatic Amino Acids (list them)
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Phenylalanine, Tyrosine, Tryptophan ( Tyr and Trp absorb UV light, these side chains are considered hydrophobic but both Tyr and Tp have functional groups that can do polar h-bonding activity).
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Amino Acids with Hydroxyl Groups (-OH)
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Serine, Threonine (These side chains are polar, often involved in H bonding)
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Cysteine
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able to form disulfide bonds ( hair relaxer), reduced thiol group can also funxn as a ligand for a metal ion like Zn2+
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Basic Amino Acids
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Lysine, Arginine, Histidine (lys and arg will be positive at neutral pH)
Often form salt bridges with neg. groups |
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Carboxylates (-COOH)
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Aspartate, Glutamate (neg at neutral pH)
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Carboyamides
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Asparagine (Asn), Glutamine (Gln)
Polar Amino Acids (not charged at neutral pH) |
