We examined the complementation of various pairs of fragments derived from the streptococcal protein G B1 domain by NMR and CD. Most were not associated; however, one pair of fragments (1-40) and (41-56) interacted sufficiently enough to regenerated a stable 1:1 complex, Kd = 9 x 10(-6) M. A 2D-NMR analysis showed that the structure of the complex resembled that of native domain. Here we discuss the complementation from the viewpoint of the folding pathway of the protein.
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Kobayashi et al. (1995) studied this question.
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