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Biochemistry

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Amino Acids, Proteins and Porphyrins

Question
33 out of 36
 

Which of the following is not true about oxy­genase? (AIPG 2007)



A Required for carboxylase reaction

B Directly transfer one oxygen atom

C Required for reaction like hydroxylation of steroid

D Directly transfer both O2 atoms

Ans. A Required for carboxylase reaction

Oxygenasesare of 2 types

a. Dioxygenase-incorporates two oxygen atoms into substrate

b. Eg. homogentisatedioxygenase

c. 3-hydroxyanthranilate dioxygenase

d. L-tryptophan dioxygenase

e. Mono oxygenases-incorporates one oxygen atom into substrate

f. Cytochrome P450 is important for:

g. Detoxification of drugs

h. Hydroxylation of steroids

Oxygenases are not required for carboxylation reaction.

Carboxylase reactions are carried out with the help of cofactor Biotin.

Amino Acids, Proteins and Porphyrins Flashcard List

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