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The reconstructions delineate the locations of the DBL domains. Three orthogonal views of the reconstructed volume of (A) ID2b-DBL6ε (blue solid), (B) DBL1x-ID2a (yellow solid), and (C) NTS-DBL6ε (black mesh). D, A–C superimposed. ID2b-DBL6ε, forms the head and tail of the molecule and DBL1x-ID2a the feet. ID2 appears to form a bridge linking DBL1x and DBL2x to the remainder of the molecule.
