Mo. Rev. Stat. § 454.1727: Severability.

If any provision of sections 454.1500 to 454.1728 or its application to any person or circumstance is held invalid, the invalidity does not affect other provisions or applications of sections 454.1500 to 454.1728 which can be given effect without the invalid provision or application, and to this end the provisions of sections 454.1500 to 454.1728 are severable.