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Strands connecting core N- and C-subdomains. This structure depicts one of the two dimers of the IPTG-bound structure of LacI (1lbh; Lewis et al. 1996). The N-terminal DNA binding domain is not resolved for this structure. The three strands that connect the two subdomains of the core are indicated with thick ribbons. The positions of 296 and 321, mutations of which revert the monomeric phenotype of Y282D, are indicated with spheres on these strands.
