The DNA Binding Arm of λ Repressor: Critical Contacts from a Flexible Region

Segments of protein that do not adopt a well-ordered conformation in the absence of DNA can still contribute to site-specific recognition of DNA. The first six residues (NH$_2$-Ser$^1$-Thr$^2$-Lys$^3$-Lys$^4$-Lys$^5$-Pro$^6$-) of phage λ repressor are flexible but are important for site-specific bin...

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