Article
Role of an N(cap) residue in determining the stability and operator-binding affinity of Arc repressor.
Biophysical chemistry - 1 Jan 2003
Anderson Thomas A, Sauer Robert T
Abstract excerpt
The Arc repressor of bacteriophage P22 is a member of the ribbon-helix-helix family of transcription factors. Ser32 is a solvent-exposed position that serves a structural role as the N(cap) residue of alpha-helix B of Arc, but also serves a functional role because its side chain is packed close to the sugar-phosphate DNA backbone in the repressor-operator complex. The tolerance of this N(cap) position to...
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