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Biochemistry > Enzymes for Reactions > Flashcards

Enzymes for Reactions Flashcards

1
Q

Phenylalanine → Tyrosine

A
  • Phenylalanine Hydroxylase
  • (EC1)
  • (Oxidoreductase)
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2
Q

Tyrosine → DOPA

A
  • Tyrosine Hydroxylase
  • (EC1)
  • (Oxidoreductase)
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3
Q

DOPA → Dopamine

A
  • DOPA Decarboxylase
  • (EC4)
  • (Lyase)
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4
Q

Dopamine → NoREpinephrine

A
  • Dopamine ß-Oxidase
  • (EC1)
  • (Oxidoreductase)
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5
Q

NoREpinephrine → Epinephrine

A
  • Phenylethanol-amine N-Methyl-transferase
  • (EC2)
  • (Transferase)
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6
Q

Tryptophan → 5-Hydroxytryptophan

A
  • Tryptophan Hydroxylase
  • (EC1)
  • (Oxidoreductase)
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7
Q

5-Hydroxytryptophan → Serotonin

A
  • Aromatic Amino Acid Decarboxylase
  • (EC4)
  • Lyase
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8
Q

Serotonin → N-Acetylserotonin

A
  • N-Acetyl Transferase
  • (EC2)
  • (Transferase)
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9
Q

N-Acetylserotonin → Melatonin

A
  • 5-Hydroxyindole-O-methyltransferase
  • (EC2)
  • (Transferase)
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10
Q

Histidine → Histamine

A
  • Histidine Decarboxylase
  • (EC4)
  • (Lyase)
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11
Q

Glutamic Acid → GABA

A
  • L-Glutamic Acid Decarboxylase (GAD) [Pyridoxal Phosphate as a cofactor]
  • (EC4)
  • (Lyase)
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12
Q

Which amino acid can Epinephrine be derived from?

A

Phenylalanine

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13
Q

Which amino acid can Taurine be derived from?

A

Cysteine

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14
Q

4-Aminobutanoic Acid (GABA) is formed by decarboxylation of which amino acid?

A

Glutamic Acid

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15
Q

The pI of an amino acid with 3 ionizable groups is given as 4.0. Which of the following is true?

A) Has a non polar side chain

B) Has an acidic side chain

C) Has a basic side chain

D) None of the above

A

B) Has an acidic side chain

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16
Q

Which of these amino acids is not used for the synthesis of Purines?

A) Gln

B) Gly

C) Asp

D) Glu

A

D) Glutamic Acid

17
Q

You need to isolate Glycine from the following tetrapeptide: AlnylSerylValylGlycine. Which enzyme would you use?

A) Carboxypeptidase

B) Aminopeptidase

A

A) Carboxypeptidase

18
Q

What is Carboxypeptidase categorized as?

A

Hydrolase

19
Q

What molecule keeps Hemoglobin in its “T” form?

A

2,3-BPG

20
Q

2,3-BPG forms what kind of bonds with the quarternary structure of hemoglobin?

A

Electrostatice force of attraction (Salt Bridges)

21
Q

CO2 id carried back to the lungs by hemoglobin as what functional group?

A

Carbamate

22
Q

What type of enzyme converts Succinate to Fumarate?

A

Oxidoreductase

23
Q

The trival name of an enzyme is a Synthatase. What category of enzyme would you classify this enzyme as?

A

Ligase

Biochemistry (17 decks)

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