Iron-containing ring structure {heme} can derive from succinyl-CoA of TCA cycle. Two delta-aminolevulinic acids make porphobilinogen ring, which becomes tetrapyrrole, which makes porphyrin. Porphyrin can make heme. Heme breakdown product is bilirubin, excreted in urine.
Physical Sciences>Chemistry>Biochemistry>Carbohydrate>Carbohydrates>Porphyrin
5-Chemistry-Biochemistry-Carbohydrate-Carbohydrates-Porphyrin
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Date Modified: 2022.0224