Learn what different shades of blood mean and how they signal changes in your health or potential medical issues.

The molecule has one shape when ferrying oxygen molecules and a slightly different shape when it is not Its 10,000 atoms are assembled into four chains, each a helix with several bends.

At the core of a hemoglobin molecule is an iron carrying component called heme, which can be loaded with oxygen. The shape of the red blood cell is useful to flexibly navigate blood vessels of all ...

Schechter says that Murayama “was ahead of his time” in connecting the structure of a molecule to its function, even if he did so imperfectly. Murayama later developed a laboratory test to detect ...

The Evolution of Hemoglobin "One can reconstruct this evolution by comparing the sequence of amino acid units in the several molecular chains of human hemoglobin and in hemoglobin chains from ...

A gene known as HbS was the center of a medical and evolutionary detective story that began in the middle 1940s in Africa. Doctors noticed that patients who had sickle cell anemia, a serious ...

which result from defective synthesis of one or more hemoglobin chains, have been identified. Notably, sickle cell anemia was the first genetic disease to be examined at the molecular level.

Rates of amino acid changes in fibrinopeptides, hemoglobin, and cytochrome c ... we can easily use the molecular differences to date species divergence. For example, if we found that the ...