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Nature. 1988 Sep 22;335(6188):321-9.

Crystal structure of trp repressor/operator complex at atomic resolution.

Author information

  • 1Department of Biochemistry and Molecular Biology, University of Chicago, Illinois 60637.

Erratum in

  • Nature 1988 Oct 27;335(6193):837.

Abstract

The crystal structure of the trp repressor/operator complex shows an extensive contact surface, including 24 direct and 6 solvent-mediated hydrogen bonds to the phosphate groups of the DNA. There are no direct hydrogen bonds or non-polar contacts to the bases that can explain the repressor's specificity for the operator sequence. Rather, the sequence seems to be recognized indirectly through its effects on the geometry of the phosphate backbone, which in turn permits the formation of a stable interface. Water-mediated polar contacts to the bases also appear to contribute part of the specificity.

PMID:
3419502
[PubMed - indexed for MEDLINE]

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