This article was originally published with the title “ A Universal Molecule of Living Matter ” in Scientific American Magazine Vol. 199 No. 2 (August 1958), p. 77 doi:10.1038 ...

Heme is the part of the hemoglobin molecule that latches onto oxygen and then releases it to tissues around the body. Waikwanlai, CC BY. Carbon monoxide, a potentially deadly gas, ...

If you've gone through this torture, you might as well stick it out to the end, which is, mercifully, near. The same chemistry explains the formation of HbAc1, except that the amino group is a tiny ...

Heme is the part of the hemoglobin molecule that latches onto oxygen and then releases it to tissues around the body. Waikwanlai, CC BY. Human blood is red because of the protein hemoglobin, which ...

Hemoglobin transports oxygen from the lungs to other parts of the body. In patients with sickle cell disease, abnormal hemoglobin molecules stick to one another and form long, rod-like structures.

Hemoglobin carries CO2 back to the lungs to be exhaled as waste, but CO2 binds to the protein portion of the hemoglobin molecule, not to the bound iron in the heme group. Like hemoglobin ...

Hemoglobin transports oxygen from the lungs to other parts of the body. In patients with sickle cell disease, abnormal hemoglobin molecules stick to one another and form long, rod-like structures.