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Mutation sites of Niks, Nib, and Arl. (A) Amino acid sequence of the distal tips (DT) region in gp37. Arrowheads indicate substitutions of amino acids in Nik1, 2, 8, Nib, and Arl mutants. Schematic diagrams of the DT region viewed from the lateral surface (B) and the top surface (C) are shown. Lines indicate positions of Niks, Nib, and Arl mutations.
