Fig. 6: Gradual contraction progress of collar-proximal sheaths.
From: Atomic structures of a bacteriocin targeting Gram-positive bacteria
Surface representations of the diffocin collars in the pre-contraction (a), post-contraction transitional (b), and post-contraction final states (c). The three structures are aligned using their collars. Five collar-proximal layers of the sheath (L32–28) are shown for each structure. Sheath color is coded by different conformations. L29–28 of sheath in the transitional state and L30–28 of sheath in the final state are trunk sheathes with the post conformer. d, Plot of outer diameters of sheath L32–28 in three states. e–g Views showing the interface between the collar and sheath layer 32 (L32) in three states. h Additional interactions between collar and sheath L32 that only appear in the final state, labeled as hexagram in right panel of (g).
