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ClinChem2 3rdYR 1stSem Prelims > (LEC) Intro to Enzymology > Flashcards

(LEC) Intro to Enzymology Flashcards

(64 cards)

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1
Q

Study of enzymes

A

Enzymology

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2
Q

Protein catalysts that increases the speed of reaction

A

Enzyme

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3
Q

The molecule upon which an enzyme acts

A

Substrate

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4
Q

Defined as the minimum energy required to start a chemical reaction

A

Activation Energy

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5
Q

Activation Energy is aka

A

Excess Energy

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6
Q

Region of an enzyme where substrate molecules bind

A

Activation site

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7
Q

Place on an enzyme where a molecule that is not a substrate may bind

A

Allosteric Site

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8
Q

Allosteric site:

Impairs activity of the enzyme

A

Allosteric Inhibitor

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9
Q

Allosteric Site:

Enhances activity of the enzyme

A

Allosteric Activator

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10
Q

Results when an enzyme is subject to posttranslational modification

A

Isoform

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11
Q

Isoform of Enzymes

A

Isoenzymes

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12
Q

Enzyme existing in different forms within the same individuals but the same action

A

Isoenzymes

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13
Q

Nonprotein molecule that may be necessary for enzyme activty

A

Cofactor

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14
Q

Inorganic cofactor

A

Activator

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15
Q

Organic cofactor

A

Coenzyme

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16
Q

Apoenzyme + Coenzyme = ?

A

Holoenzyme

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17
Q

Proenzyme is aka?

A

Zymogen

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18
Q

Inactive form or precursor of enzyme

A

Proenzyme / Zymogen

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19
Q

Reaction Type that Catalyzes one type of reaction for a single substrate

A

Absolute

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20
Q

Reaction Type that Catalyzes one type of reaction for similar substrates

A

Group

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21
Q

Reaction Type that Catalyzes one type of reaction for a specific type of bond

A

Linkage

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22
Q

Example of Enzyme with Absolute Reaction Type

A

Urease

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23
Q

Example of Enzyme with Group Reaction Type

A

Hexokinase

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24
Q

Example of Enzyme with Linkage Reaction Type

A

Chymotrypsin

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25
Enzyme for Lipid Substrate
Lipase
26
Enzyme for Ester Substrate
Esterase
27
Enzyme for Protein Substrate
Protease
28
Enzyme for Oxidation Reaction
Oxidase
29
Enzyme for Reduction Reaction
Reductase
30
Enzyme for Hydrolysis Reaction
Hydrolase
31
Enzyme for Removal of Hydrogen
Dehydrogenase
32
Enzyme for Removal of Carboxyl groups
Decarboxylase
33
1st digit in Enzyme Commission Nomenclature
Class
34
2nd digit in Enzyme Commission Nomenclature
Subclass
35
3rd or 4th digit in Enzyme Commission Nomenclature
Serial Number
36
Classification of Enzymes for EC Nomenclature (1-6)
1. Oxireductase 2. Transferase 3. Hydrolase 4. Lyase 5. Isomerase 6. Ligase
37
EC of Lactate Dehydrogenase
1.1.1.27
38
EC of G6P
1.1.1.49
39
EC of Glutamine dehydrogenase
1.4.1.3
40
Transfer of functional groups other than hydrogen from one substrate to another
Transferase
41
EC of Aspartate aminotransferase
2.6.1.1
42
EC of Alanine aminotransferase
2.6.1.2
43
EC of Creatine Kinase
2.7.3.2
44
EC of y-Glutamyltransferase
2.3.2.2
45
EC of g-S-transferase
2.5.1.18
46
EC of Glycogen phosphorylase
2.4.1.1
47
EC of Pyruvate Kinase
2.7.1.40
48
Addition of water to a bond resulting in bond breakage
Hydrolases
49
EC of Alkaline phosphatase
3.1.3.1
50
EC of Acid phosphatase
3.1.3.2
51
EC of alpha-Amylase
3.2.1.1
52
EC of Cholinesterase
3.1.1.8
53
EC of Chymotrypsin
3.4.21.1
54
EC of Esterase-1
3.4.21.36
55
EC of 5-Nucleotidase
3.1.3.5
56
EC of Triacylglycerol lipase
3.1.1.3
57
EC of Trypsin
3.4.21.4
58
Catalyzes removal of groups from substrates without hydrolysis
Lyases
59
Lyases reaction products contains
Double bonds
60
Rearranges the functional groups within a molecule and catalyzes the conversion of isomer to another
Isomerase
61
Catalyzes the joining of two large molecules by forming a new chemical bond
Ligase
62
EC of Lyase
4.1.2.13
63
EC of Isomerase
5.3.1.1
64
EC of Ligase
6.3.2.3

ClinChem2 3rdYR 1stSem Prelims (12 decks)

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