Question

Among uroporphyrinogen, coproporphyrinogen III, protoporphyrinogen III, protoporphyrin III, which is the first porphyrin of the heme synthesis pathway?

a) Uroporphyrinogen
b) Coproporphyrinogen III
c) Protoporphyrinogen III
d) Protoporphyrin III

Answer 1

The first porphyrin of the heme synthesis pathway is protoporphyrinogen III.

Step-by-step explanation:

The first porphyrin of the heme synthesis pathway is protoporphyrinogen III.

Heme is an iron porphyrin structure synthesized in the bone marrow of adult human beings. It is synthesized starting from glycine and succinyl-CoA. The type of porphyrin present in heme is protoporphyrin III.