Hemoglobin normal range - Chart of Hemoglobin Levels: What to Do When It Is Abnormal?

Since many of these proteins contain and the heme iron in a flat porphyrin support , they are often called hemoglobins, even if their overall tertiary structure is very different from that of vertebrate hemoglobin.

Iron's shift to a higher oxidation state in Hb-O 2 decreases the atom's size, and allows it into the plane of the porphyrin ring, pulling on the coordinated histidine residue and initiating the allosteric changes seen in the globulins.

This can lead to symptoms like jaundice, fatigue and certain neurological conditions.

Larsen, Sandra, Elisabeth Krefting Bjelland, Camilla Haavaldsen, and Anne Eskild.