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NYCC Biochem I > Enzyme Classes > Flashcards

Enzyme Classes Flashcards

1
Q

Name the enzyme classes

A

Oxido-reductases
Transferases
Hydrolases
Lysases
Isomerases
Ligase
(Ribozymes)

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2
Q

The reaction of lactate to pyruvate occurs in the ____

A

Liver

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3
Q

Coenzyme for lactate -> pyruvate

A

NAD+ -> NADH + H+

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4
Q

What enzyme converts lactate to pyruvate, or pyruvate to lactate?

A

Lactate dehydrogenase (LDH)

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5
Q

The reaction of pyruvate to lactate occurs in ____

A

Muscle & RBC

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6
Q

What enzyme converts succinate to fumarate?

A

Succinate dehydrogenase

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7
Q

Succinate is converted to fumarate in ____

A

Kreb’s cycle (mitochondria)

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8
Q

What is the coenzyme for the reaction succinate to fumarate?

A

FAD -> FADH2

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9
Q

What is the coenzyme for the reaction of retinal to retinol?

A

NADPH + H+ -> NADP+

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10
Q

What is the enzyme that converts retinal to retinol?

A

Retinaldehyde reductase

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11
Q

Retinal is converted to retinol in the ____

A

Liver

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12
Q

What is the enzyme for pyruvate to acetyl CoA?

A

Pyruvate dehydrogenase

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13
Q

What is the coenzyme for pyruvate to acetyl CoA?

A

TPP
NAD+ -> NADH + H+
Coenzyme A

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14
Q

Pyruvate is converted to acetyl CoA in the ____

A

Mitochondria

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15
Q

What is the coenzyme for the reaction pyruvate + glutamate -> alanine + alpha ketoglutarate

A

Pyridoxal 5 phosphate

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16
Q

What is the enzyme for the reaction pyruvate + glutamate -> alanine + alpha ketoglutarate

A

SGPT
Serum Glutamate Pyruvate Transaminase

AKA:
ALT
Alanine transaminase

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17
Q

The reaction pyruvate + glutamate -> alanine + alpha ketoglutarate occurs in ____

A

Muscle

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18
Q

What is the coenzyme for the reaction alanine + alpha ketoglutarate -> pyruvate + glutamate

A

Pyridoxal 5 phosphate

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19
Q

What is the enzyme for the reaction alanine + alpha ketoglutarate -> pyruvate + glutamate

A

Serum Glutamate Pyruvate Transaminase (SGPT)

AKA:
Alanine transaminase (ALT)

20
Q

The reaction alanine + alpha ketoglutarate -> pyruvate + glutamate occurs in the ____

A

Liver

21
Q

What is the coenzyme for the reaction creatine -> creatine P?

A

ATP -> ADP

22
Q

What is the enzyme for the reaction creatine -> creatine P?

A

Creatine kinase

23
Q

The reaction creatine -> creatine P occurs in ____

A

Muscle

24
Q

What is the coenzyme for the reaction glucose 6P -> glucose?

A

H2O

25
Q

What is the enzyme for the reaction glucose 6P -> glucose?

A

Glucose 6 Phosphatase

26
Q

The reaction glucose 6P -> glucose occurs in the ____

A

Liver

27
Q

What class of enzymes are digestive enzymes?

A

Hydrolases

28
Q

What do transaminases transfer?

A

Amino group

29
Q

What do kinases transfer?

A

High energy P

30
Q

What class of enzymes is anhydrase?

A

Lyases

31
Q

What class of enzymes are hydroxylases?

A

Lyases

32
Q

What is the coenzyme for the reaction CO2 + H2O -> H2CO3?

A

Zinc

33
Q

What is the enzyme for the reaction CO2 + H2O -> H2CO3?

A

Carbonic anhydrase

34
Q

Where does the reaction CO2 + H2O -> H2CO3 occur?

A

Red blood cell in tissues

35
Q

Where does the reaction H2CO3 -> CO2 + H2O occur?

A

Red blood cells in lung

36
Q

What is the coenzyme for the reaction proline + OH -> hydroxyproline?

A

Reduced form of vitamin C (needs bioflavonoids)

37
Q

What is the enzyme for the reaction proline + OH -> hydroxyproline?

A

Prolyl hydroxylase

38
Q

Where does the reaction proline + OH -> hydroxyproline occur?

A

Collagen

39
Q

What is the coenzyme for the reaction lysine + OH -> hydroxylysine?

A

Reduced form of vitamin C

40
Q

What is the enzyme for the reaction ketose <-> aldose?

A

Glyceraldehyde 3P <-> DHAP
Glucose <-> fructose

41
Q

Where does the reaction ketose <-> aldose occur?

A

RBCs & liver

42
Q

What enzyme class is glyceraldehyde 3P <-> DHAP and Glucose <-> fructose?

A

Isomerase

43
Q

What is the coenzyme for the reaction pyruvate + CO2 -> oxaloacetate?

A

Carboxybiotin & ATP

44
Q

What is the enzyme for the reaction pyruvate + CO2 -> oxaloacetate?

A

Pyruvate carboxylase

45
Q

Where does the reaction pyruvate + CO2 -> oxaloacetate occur?

A

Mitochondria
Liver

46
Q

Ribozymes are not ____

A

Proteins

47
Q

Where do exon splicing events occur?

A

Nucleus (ribozymes)

NYCC Biochem I (46 decks)

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