... of DNA and the b-ribbon arms, and variable contactsbetween additional DNA and the body of the protein [19]. In the case of MC1ÆDNA complexes, we knowthat the protein covers at least 15 bp and ... MHz, and R2relaxation delays of 10, 20, 30, 50, 70, 90, 110 and 150 mswere used for data collection at 800 MHz. The errors inR1 and R2were determined by generating random distri-butions of ... R1relaxa-tion delays of 10, 100, 200, 300, 500, 800, 1000 and 1300 ms and R2relaxation delays of 10, 30, 50, 70, 90, 110,130 and 150 ms at 299 K.Backbone CSPs and 15N-NOE changes upon...