AMINO ACIDS Flashcards
1
Q
pH below pKa
A
Largely Protonated
Net charge +1
2
Q
pH above pKa
A
Largely Deprotonated
Net charge -1
3
Q
pH near pKa
A
Mix of two forms
Carboxyl group deprotonated
4
Q
pI
A
Average of pKa’s
No net charge here
5
Q
Aliphatic Aminos
A
Gly, Ala, Leu, Ile, Val
pKa appx. 2.3, 9.8
6
Q
Hydroxyl Aminos
A
Ser, Thr, Tyr
7
Q
Sulfur Aminos
A
Met, Cys, Sec
8
Q
Acidic Aminos
A
Asp, Glu
9
Q
Amide Aminos
A
Asn (N), Gln (Q)
10
Q
Basic Aminos
A
Arg, Lys, His
11
Q
Aromatic Aminos
A
His, Phe, Tyr, Trp
12
Q
Imino Acid
A
Pro
13
Q
Hydrophobic Aminos
A
Gly, Ala, Leu, Ile, Val
Phe, Tyr, Trp, His
14
Q
Hydrophilic
A
Asn, Gln, Pro
Ser, Thr, Tyr
Arg, Lys, Asp, Glu, His
Met, Cys, Sec
15
Q
Bacitracin
A
D-amino. Inhibit the entry to the AIDS virus HIV-1 into cells.
