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10 Cards in this Set

  • Front
  • Back
Name the non-polar amino acids.
Glycine, Alanine, Valine
Name the polar amino acids.
Serine, Threonine.
Name the aromatic amino acids
Phenylalanine, tyrosine, tryptophan
Name the basic amino acids
Lysine, Arginine
Name the acid amino acids (negatively charged at neutral pH)
Aspartate, Glutamate
Name the carboxiamide amino acids (uncharged polar)
Asparagine, Glutamine
What aa's are polar with OH groups and why is this important?
Serine, Threonine, Tyrosine. Important can be targeted for modification (eg.: glycosylation, phosphorylation)
What are the 5 main roles of amino acid side chains?
1) Active site residues
2) H bonding
3) Hydrophobic interactions
4) Modification
5) Other structural roles
Why are histidine and cysteine important in acid-base catalysis?
Because their Pk1 are 6.0 and 8.3, respectively, which are within neutral pH in cell environment.
What leads to PKU (phenylketonuria)?
If there's a defect in enzyme or cofactor in converting phenylalanine to tyrosine, then phenylalanine forms other compounds that lead to mental retardation.