Enzyme Classes Flashcards
Name the enzyme classes
Oxido-reductases
Transferases
Hydrolases
Lysases
Isomerases
Ligase
(Ribozymes)
The reaction of lactate to pyruvate occurs in the ____
Liver
Coenzyme for lactate -> pyruvate
NAD+ -> NADH + H+
What enzyme converts lactate to pyruvate, or pyruvate to lactate?
Lactate dehydrogenase (LDH)
The reaction of pyruvate to lactate occurs in ____
Muscle & RBC
What enzyme converts succinate to fumarate?
Succinate dehydrogenase
Succinate is converted to fumarate in ____
Kreb’s cycle (mitochondria)
What is the coenzyme for the reaction succinate to fumarate?
FAD -> FADH2
What is the coenzyme for the reaction of retinal to retinol?
NADPH + H+ -> NADP+
What is the enzyme that converts retinal to retinol?
Retinaldehyde reductase
Retinal is converted to retinol in the ____
Liver
What is the enzyme for pyruvate to acetyl CoA?
Pyruvate dehydrogenase
What is the coenzyme for pyruvate to acetyl CoA?
TPP
NAD+ -> NADH + H+
Coenzyme A
Pyruvate is converted to acetyl CoA in the ____
Mitochondria
What is the coenzyme for the reaction pyruvate + glutamate -> alanine + alpha ketoglutarate
Pyridoxal 5 phosphate
What is the enzyme for the reaction pyruvate + glutamate -> alanine + alpha ketoglutarate
SGPT
Serum Glutamate Pyruvate Transaminase
AKA:
ALT
Alanine transaminase
The reaction pyruvate + glutamate -> alanine + alpha ketoglutarate occurs in ____
Muscle
What is the coenzyme for the reaction alanine + alpha ketoglutarate -> pyruvate + glutamate
Pyridoxal 5 phosphate
What is the enzyme for the reaction alanine + alpha ketoglutarate -> pyruvate + glutamate
Serum Glutamate Pyruvate Transaminase (SGPT)
AKA:
Alanine transaminase (ALT)
The reaction alanine + alpha ketoglutarate -> pyruvate + glutamate occurs in the ____
Liver
What is the coenzyme for the reaction creatine -> creatine P?
ATP -> ADP
What is the enzyme for the reaction creatine -> creatine P?
Creatine kinase
The reaction creatine -> creatine P occurs in ____
Muscle
What is the coenzyme for the reaction glucose 6P -> glucose?
H2O
What is the enzyme for the reaction glucose 6P -> glucose?
Glucose 6 Phosphatase
The reaction glucose 6P -> glucose occurs in the ____
Liver
What class of enzymes are digestive enzymes?
Hydrolases
What do transaminases transfer?
Amino group
What do kinases transfer?
High energy P
What class of enzymes is anhydrase?
Lyases
What class of enzymes are hydroxylases?
Lyases
What is the coenzyme for the reaction CO2 + H2O -> H2CO3?
Zinc
What is the enzyme for the reaction CO2 + H2O -> H2CO3?
Carbonic anhydrase
Where does the reaction CO2 + H2O -> H2CO3 occur?
Red blood cell in tissues
Where does the reaction H2CO3 -> CO2 + H2O occur?
Red blood cells in lung
What is the coenzyme for the reaction proline + OH -> hydroxyproline?
Reduced form of vitamin C (needs bioflavonoids)
What is the enzyme for the reaction proline + OH -> hydroxyproline?
Prolyl hydroxylase
Where does the reaction proline + OH -> hydroxyproline occur?
Collagen
What is the coenzyme for the reaction lysine + OH -> hydroxylysine?
Reduced form of vitamin C
What is the enzyme for the reaction ketose <-> aldose?
Glyceraldehyde 3P <-> DHAP
Glucose <-> fructose
Where does the reaction ketose <-> aldose occur?
RBCs & liver
What enzyme class is glyceraldehyde 3P <-> DHAP and Glucose <-> fructose?
Isomerase
What is the coenzyme for the reaction pyruvate + CO2 -> oxaloacetate?
Carboxybiotin & ATP
What is the enzyme for the reaction pyruvate + CO2 -> oxaloacetate?
Pyruvate carboxylase
Where does the reaction pyruvate + CO2 -> oxaloacetate occur?
Mitochondria
Liver
Ribozymes are not ____
Proteins
Where do exon splicing events occur?
Nucleus (ribozymes)
