Amino Acids Flashcards
Alanine
A
Arginine
R
Asparagine
N
Aspartic Acid
D
Cysteine
C
Glutamine
Q
Glutamic Acid
E
Glycine
G
Histidine
H
Isoleucine
I
Leucine
L
Lysine
K
Methionine
M
Phenylalanine
F
Proline
P
Serine
S
Threonine
T
Tryptophan
W
Tyrosine
Y
Valine
V
Which amino acid(s) have 2 chiral centers?
I and T
Which amino acid(s) have no chiral center?
G
True or false - every amino acid except I, T, and G has one chiral center.
True
True or false - Phenylalanine has an absorption at 258 nm, but it does not show up because it is much less than Glycine and Threonine.
False. Because it is much less than Y and W
The ____ side chains of amino acids absorb UV light
aromatic
True or false - Biologically active amino acid derivatives include GABA, Histamine, and Dopamine.
True
True or false - Dopamine is synthesized in 2 enzymatic steps from tyrosine via L-DOPA.
True
True or false - Deficiencies in dopamine production do not correlate with Parkinson’s disease.
False
How is Parkinson’s disease treated?
L-DOPA is administered to give some relief
What are disulfide bridges?
A covalent bond between 2 sulfur atoms of 2 cysteine residues
What do protein kinases do?
Attach phosphoryl groups to Ser, Thr, and Tyr side chains
What do protein phosphatases do?
Remove phosphoryl groups from Ser, Thr, and Tyr side chains
