Altered Specificity in DNA Binding by the lac Repressor: A Mutant lac Headpiece that Mimics the gal Repressor

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Summary

Structural data show that, while most of the anchoring points that help the lac headpiece to assemble on the lac operator were preserved, a different network of protein–DNA interactions connecting Ala17 and Val18 to bases in the DNA major groove drives the specificity towards the altered operator.

Type
article
Published
2005-09-05
Cited by
20
References
63
Access
Open access

Keywords

Lac repressor, Repressor, lac operon, Mutant, Operator (biology)

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