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6-phosphogluconolactone is hydrolysed by which enzyme to produce 6 molecules of 6-phosphogluconic acid.

Option: 1


Option: 2

6-phosphogluconic acid dehydrogenase

Option: 3

Ribulose phosphate-3-epimerase

Option: 4

Pentose phosphate isomerase

Answers (1)


The enzyme lactonase hydrolyzes 6-phosphogluconolactone and produces 6 molecules of 6-phosphogluconic acid.

The enzyme 6-phosphogluconic acid dehydrogenase decarboxylates phosphogluconic acid by oxidation.

In the presence of the enzymes ribulose phosphate-3-epimerase and pentose phosphate isomerase, 6 molecules of ribulose-5-phosphate isomerize into 4 molecules of xylulose-5-phosphate and 2 molecules of ribose-5-phosphate produce respectively.

Hence, option 1 is the correct answer.


Posted by

seema garhwal

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