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17 Cards in this Set

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urea
Excess nitrogen transformed.

Non-toxic, water soluable. Filtered out by Kidneys.
transamination
Removal of the amino group from all amino acids to glutamate. Creates amino acids and degrades others.
urea cycle
Incorporation of nitrogen into urea.
pyridoxal
A vitamin B6 derivative cofactor used by transaminase enzymes.
carbon skeleton
The part of an amino acid that is not the nitrogen (amino group).
glucogenic amino acid
an amino acid that produces pyruvate or one of the Krebs cycle intermediates
ketogenic amino acid
an amino acid that produces a:

ketone body
acetyl-CoA
acetoacetate
physiologically active amines
neurotransmitters and hormones
neurotransmitters
Signaling molecules between two nerve cells. Excitatory or inhibiting.
GABA
A glutamate with the carboxyl group removed. An important neurotransmitter.
histamine
A histadine with the carboxyl group removed. Mediator of allergic response.
serotonin
A tryptophan with the carboxyl group removed. Makes us sleepy.
L-DOPA
Tyrosine with hydroxyl group added. Anti-Parkinson's medication.
dopamine
Decarboxylated L-DOPA. A neurotransmitter that is deficient in Parkinson's patients.
epinephrine
adrenaline. Found in ephedra.
essential amino acids
The ones we must take in through diet, b/c we can't make them.
uric acid
An insoluable form of nitrogen, expelled by reptiles. Forms crystalline precipitates as its concentration increases. Causes gout.