The BC component of ABC toxins is an RHS-repeat-containing protein encapsulation device.
2013
The crystal structure of the complex formed by the B and C toxin complex proteins is reported, revealing how toxin complexes are processed and protected; the proteins assemble to form a large hollow structure that sequesters the cytotoxic portion of the C protein, and a β-propeller domain mediates attachment to the A protein in the native ABC complex.
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