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Amino Acid Classifications
info about amino acids
36
Biology
Undergraduate 3
05/22/2012
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Term
Histidine
 Definition
positively charged
imidazole
pKa= 6
Term
Tryptophan
 Definition
Aromatic, hydrophobic
Term
Aspartate
 Definition
Negatively Charged
side chain carboxyl group
pKa= 3.65
Term
Arginine
 Definition
positively charged
guanidino
pKa= 12.48
Term
Leucine
 Definition
hydrophobic
Term
Proline
 Definition
hydrophobic
Term
Glutamine
 Definition
hydrophilic uncharged
amide group
Term
Threonine
 Definition
hydrophilic uncharged
Term
Isoleucine
 Definition
hydrophobic
Term
Glycine
 Definition
hydrophobic
Term
Valine
 Definition
hydrophobic
Term
Glutamate
 Definition
Negatively Charged
side chain carboxyl group
pKa= 4.25
Term
Methionine
 Definition
hydrophobic
Term
Tyrosine
 Definition
aromatic, hydrophobic
pKa= 10.07
Term
Lysine
 Definition
positively charged
epsilon amino
pKa= 10.53
Term
Phenylalanine
 Definition
aromatic, hydrophobic
Term
Asparagine
 Definition
hydrophilic uncharged
Term
Alanine
 Definition
hydrophobic
Term
Cysteine
 Definition
hydrophilic uncharged
thiol group
pKa= 8.18
Term
Serine
 Definition
hydrophilic uncharged
Term
Hydrophobic Amino Acids
 Definition
Glycine, Alanine, Proline, Valine, Leucine, Isoleucine, Methionine, Phenylalanine, Tyrosine, Tryptophan
Term
Glycine, Alanine, Proline, Valine, Leucine, Isoleucine, Methionine, Phenylalanine, Tyrosine, Tryptophan
 Definition
Hydrophobic amino acids
Term
Aromatic Amino Acids
 Definition
Phenylalanine, Tyrosine, Tryptophan
Term
Phenylalanine, Tyrosine, Tryptophan
 Definition
Aromatic Amino Acids
Term
Hydrophilic amino acids
 Definition
Serine, Threonine, Cysteine, Asparagine, Glutamine
Term
Serine, Threonine, Cysteine, Asparagine, Glutamine
 Definition
Hydrophilic amino acids
Term
Charged amino acids
 Definition
Aspartate, Glutamate, Lysine, Arginine, Histidine
Term
Aspartate, Glutamate, Lysine, Arginine, Histidine
 Definition
Charged amino acids
Term
α-carboxyl group
 Definition
pKa= 1.8-2.4 (3.1)
Term
α-amino group
 Definition
pKa= 8.8-11.0 (8)
Term
Side-chain carboxyl
 Definition
pKa= 4.1
Term
imidazole
 Definition
pKa= 6
Term
Thiol
 Definition
pKa= 8.3
Term
Aromatic Hydroxyl
 Definition
pKa= 10.9
Term
Epsilon amino
 Definition
pKa= 10.8
Term
Guanidino
 Definition
pKa= 12.5
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