The Structure of Coiled-Coil
Two alpha helices are intertwined and gradually coiled around each other, and the hydrophobic interacvion is the form force.The alpha helices in the coiled coil are slightly distorted so that the helical repeat is 3.5 residues compared to 3.6 in a regular alpha helicx. There is therefore an integral repeat of 7 residues along the helices.
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