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The packing structure and the dynamical behavior of these Ala Cβ groups in the poly-A region of S. c. ricini silk fibers studied by the MD simulation [110]. Two of the Ala Cβ carbons out of eight existing in the unit cell of the staggered packing structure exhibited the fastest hopping motion in spite of the shortest Cβ−Cβ distance, indicating a geared hopping motion [110].
