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Synthesis of Heme
Maria Gul
 Porphyrins are cyclic compounds formed by the linkage of four
pyrrole rings through methyne (=HC) bridges. A characteristic
property of the porphyrins is the formation of complexes with metal
ions bound to the nitrogen atom of the pyrrole rings. Examples are
the iron porphyrins such as heme of hemoglobin and the
magnesium-containing porphyrin chlorophyll, the photosynthetic
pigment of plants.
 approximately 85% of heme synthesis occurs in erythroid precursor
cells in the bone marrow and the majority of the remainder in
hepatocytes.
Synthesis of heam 20 21
Synthesis of heam 20 21
Synthesis of heam 20 21
Uroporphyri
inogen1 or
hydroxy
methylbilane
synthase
Synthesis of heam 20 21
Synthesis of heam 20 21
Synthesis of heam 20 21

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Synthesis of heam 20 21

  • 2. Porphyrins are cyclic compounds formed by the linkage of four pyrrole rings through methyne (=HC) bridges. A characteristic property of the porphyrins is the formation of complexes with metal ions bound to the nitrogen atom of the pyrrole rings. Examples are the iron porphyrins such as heme of hemoglobin and the magnesium-containing porphyrin chlorophyll, the photosynthetic pigment of plants. approximately 85% of heme synthesis occurs in erythroid precursor cells in the bone marrow and the majority of the remainder in hepatocytes.