Question

Heme is a porphyrin complex of.

Answer 1

Answer:

Heme is composed of a ringlike organic compound known as a porphyrin, to which an iron atom is attached. It is the iron atom that reversibly binds oxygen as the blood travels between the lungs and the tissues.

Answer 2

Answer:

Answer:Heme is a porphyrin ring that has been 'complexed' with iron and protoporphyrin IX.

Explanation:

• Heme is a protein's important prosthetic group that serves as a subcellular compartment for many biological functions such as haemoglobin and myoglobin.
• Electron transport chain cytochromes, catalase, and nitric oxide synthase are among the enzymes that utilise heme as a prosthetic group.
• Heme is synthesised primarily in the bone marrow by erythrocytes in the liver by hepatocytes.
• A tetrahedral structure made up of four heme groups encircling a globin group.
• Heme is actually made up of a porphyrin, which is a ring-like organic material with an iron atom attached to it, accounting for only 4% of the molecule's weight.
• Despite the fact that heme proteins contain iron, they are not considered metalloproteins since their prosthetic group is an iron-porphyrin 'complex' in which the iron is tightly bonded.

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