Methionine repressor

Figure 5-39 (A) Stereoscopic ribbon representation of the E. coli methionine repressor-operator complex. Two subunits form a dimer with a double-stranded antiparallel 3 ribbon that fits into the major groove of the DNA in the B form. One strand is shaded more darkly than the other.

Thompson MJ, Mekhalfia A, Jakeman DL, Phillips SEV, Phillips K, Porter J, et al. Homochiral synthesis of an aza analogue of S-adenosyl-L-methionine (AdoMet) and its binding to the E. coli methionine repressor protein (MetJ). Chem. Commun. 1996 791-792. 

Figure 31.13. DNA Recognition Through p Strands. The structure of the methionine repressor bound to DNA reveals that residues in P strands, rather than a helices, participate in the crucial interactions between the protein and...

D. E. Hyre and L. D. Spicer, Thermodynamic evaluation of binding interactions in the methionine repressor system of Escherichia coU using isothermal titration calorimetry. Biochemistry, 34 (1995), 3212. 

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