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Biochemistry Metabolism of Purines and Pyrimidines 594d2516

Rate limiting step in porphyrine synthesis -

A
ALA dehydratase
B
ALA synthase
C
UPG decarboxylase
D
Ferrochelatase
High-Yield Explanation
Ans. is 'b' i.e., ALA synthase o See above explanation. Heme is the most important porphyrin (porphyrin III) in the body.

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