Enzymes : groups Flashcards

1
Q

What is the first group of enzymes

A

oxidoreductases

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2
Q

what is the second group of enzymes

A

transferases

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3
Q

what is the third group of enzymes

A

hydrolases

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4
Q

what is the fourth group of enzymes

A

lyase

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5
Q

what is the fifth group of enzymes

A

isomerase

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6
Q

what is the sixth group of enzymes

A

ligases

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7
Q

PPO and GOX (glucose oxidase) are in the category of _____

A

oxidoreductases

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8
Q

glucose oxidase is a _____ and it is used in the food industry as a ____

A

oxidoreductase

desugaring agent

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9
Q

What does transferase do é6

A

catalyse transfer of groups between or within molecules.

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10
Q

Transglutaminase is an example of ____ and it is used in the food industry to ___

A

transferase

improve the texture in foods. It can be used to glue fish meat together. It Is used to make surimi.

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11
Q

What is the role of hydrolase

A

catalysts that use water to break a chemical bond which typically results in dividing a larger molecule to smaller molecules

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12
Q

What is the difference between hydrolase and lyases

A

alyaseis an enzyme that catalyzes the breaking (an “elimination” reaction) of various chemical bonds by means other than hydrolysis (a “substitution” reaction) and oxidation, often forming a new double bond or a new ring structure.

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13
Q

histidine decarboxylase and fumarase are example of ___

A

lyases

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14
Q

what is the role of isomerase

A

an enzyme that catalyzes the conversion of a specified compound to an isomer (each of two or more compounds with the same formula but a different arrangement of atoms in the molecule and different properties.)

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15
Q

glucose isomerase is an example of ____

A

isomerase

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16
Q

What is the role of ligase

A

ligaseis anenzymethat cancatalyzethe joining of two large molecules by forming a newchemical bond, usually with accompanyinghydrolysisof a small pendant chemical group on one of the larger molecules or the enzyme catalyzing the linking together.