List the hydrophobic amino acids.
Alanine, valine, phenylalanine, tryptophan, leucine, isoleucine, methionine and proline.
List the polar amino acids
Serine, threonine, tyrosine, cysteine, asparganine, glutamine, histidine and glycine.
List the charged amino acids.
Aspartate, glutamate, lysine and arginine.
Ala
alanine
Val
valine
Phe
phenylalanine
Trp
tryptophan
Leu
leucine
Ile
isoleucine
Met
methionine
Pro
proline
Ser
serine
Thr
threonine
Tyr
tyrosine
Cys
cysteine
Asn
asparganine
Gln
glutamine
His
histidine
Gly
glycine
Asp
aspartate
Glu
glutamate
Lys
lysine
Arg
arginine
Which 3 polar amino acids are ionizable (have pKa’s)?
Tyrosine, cysteine and histidine
What is the pKa of tyrosine (Tyr) R group?
10.5
What is the pKa of cysteine (Cys) R group?
8.5
What is the pKa of histidine (His) R group?
6.0
What is the pKa of aspartate (Asp) R group?
4.0
What is the pKa of glutamate (Glu) R group?
4.0
What is the pKa of lysine (Lys) R group?
10.5
What is the pKa of arginine (Arg) R group?
12.5
Alanine (Ala)
Valine (Val)
Leucine (Leu)
Isoleucine (Ile)
Phenylalanine (Phe)
Tryptophan (Trp)
Methionine (Met)
Proline (pro)
Glycine (Gly)
Serine (Ser)
Threonine (Thr)
Tyrosine (Tyr)
Cysteine (Cys)
Asparagine (Asn)
Glutamine (Gln)
Histidine (His)
Aspartate (Asp)
Glutamate (Glu)
Lysine (Lys)
Arginine (Arg)
Which amino acid can act as an acid or base around neutral pH?
Histidine
Which amino acid is important in many enzyme catalyzed reactions?
Histidine