|MadSci Network: Molecular Biology|
The molecular structure of chlorophyll greatly resembles the structure of the heme part of hemoglobin. Is it possible that hemoglobin in animals evolved from a chlorophyll-like molecule in an early life form? Could the hemoglobin molecule effectively carry oxygen if its iron atom were replaced with chlorophyll's magnesium atom? Could a chlorophyll molecule effectively harness sunlight with an iron atom in place of its magnesium atom?
Re:chlorophyll / hemoglobin
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