Structure
The image at the left is a crystal structure of the double-d fragment from human fibrin with two bound ligands. The experimental method used to obtain the image was X-ray diffraction, and it has a resolution of 2.30 Å. The structure is mainly made up of single alpha helices shown in red and beta sheets shown in yellow. The two blue structures are the bound ligands. The chemical structures of the ligands are Ca+2 ion, alpha-D-mannose (C6H12O6), and D-glucosamine (C8H15NO6).
Read more about this topic: Fibrin
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