To download the 3D model it's here: [ Ссылка ]

Human Oxyhemoglobin Deoxyhemoglobin, published: friday 10th june 2016

The oxygen molecule is shown in blue. As it binds to the iron atom in the center of the heme, it pulls a histidine amino acid upwards on the bottom side of the heme. This shifts the position of an entire alpha helix, shown here in orange below the heme. This motion is propagated throughout the protein chain and on to the other chains. The two structures shown (oxy/deoxy) have been model in 3d from PDB entries : 4hhb [ Ссылка ] and 1hho [ Ссылка ] (x5 000 000).

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