Haemoglobin synthesis stas with?
Correct Answer: Histidine
Description: Glycine REF: Harper 26th e p. 271-275 Steps of porphyrin ring synthesis: Enzyme I Location Substrate Product porphyria ALA synthase Mitochondrion Glycine, succinyl CoA D-Aminolevulinic acid none ALA dehydratase Cytosol D-Aminolevulinic acid Porphobilinogen ALA? Dehydratase deficiency PBG deaminase Cytosol Porphobilinogen Hydroxymethyl bilane Acute intermittent porphyria Uroporphyrinogen Cytosol III synthase Hydroxymethyl bilane Uroporphyrinogen III Congenital erythropoietic porphyria Uroporphyrinogen Cytosol III decarboxylase Uroporphyrinogen III Coproporphyrinogen III Porphyria cutanea tarda Coproporphyrinogen III oxidase Mitochondrion Coproporphyrinogen III Protoporphyrinogen IX Coproporphyria Protoporphyrinogen oxidase Mitochondrion Protoporphyrinogen IX Protoporphyrin IX Variegate porphyria Ferrochelatase Mitochondrion Protoporphyrin IX Heme Erythropoietic protoporphyria Heme synthesis--note that some reactions occur in the cytoplasm and some in the mitochondrion (yellow)
Category:
Biochemistry
Get More
Subject Mock Tests
Practice with over 200,000 questions from various medical subjects and improve your knowledge.
Attempt a mock test nowMock Exam
Take an exam with 100 random questions selected from all subjects to test your knowledge.
Coming SoonGet More
Subject Mock Tests
Try practicing mock tests with over 200,000 questions from various medical subjects.
Attempt a mock test now