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Secondary structure and low-resolution 3D structure of rSbp. A, the far UV CD spectrum of rSbp. B, the 3D atomic model of rSbp predicted by the I-TASSER online server, revealing three helix bundles packed against a β-sheet. C, the ab initio shape envelope in two views for rSbp, reconstructed by DAMMIN, is elongated. The atomic model in B was superimposed onto the shape envelope. mdeg, millidegrees.
