Interactions of Arg2 in the Mnt N-terminal arm with the central and flanking regions of the Mnt operator.

Abstract excerpt

Arg2, in the N-terminal arm of the Mnt repressor, plays an important role in determining operator-binding specificity. In the complex of the Mnt tetramer with the 21 base-pair mnt operator, there are four potential sites for Arg2 interactions, two in the central region of the operator and two on the outer flanks of the operator. Single-chain variants of the dimeric N-terminal domain of Mnt containing one Arg2...

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