Tanaka, Shinji; Kawata, Yasushi; Dixon, Nicholas; Matsuzaki, Katsumi; Hoshino, Masaru; Otting, Gottfried
A novel chaperonin-encapsulation system for NMR measurements has been designed. The single-ring variant SR398 with an ATPase deficient mutation of GroEL, also known as chaperonin, bound co-chaperonin GroES irreversibly, forming a stable cage to encapsulate a target protein. A small GroEL-binding tag made it possible to perform all steps of the encapsulation under near physiological conditions while retaining the native conformation of the target protein. About half of the SR398/GroES cages...[Show more]
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