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. Author manuscript; available in PMC: 2008 Sep 21.

Published in final edited form as: J Mol Biol. 2007 Jul 17;372(3):689–707. doi: 10.1016/j.jmb.2007.07.008

Chemical shift perturbations in ¹H- ¹⁵N HSQC spectra of 70 µM ¹⁵N-labeled aS, bS, and gS in the presence of 100 µg/ml poly-L-lysine (A), and 50 µg/ml poly-L-argine (B). The weighted average of the ¹H and ¹⁵N chemical shifts of a given residue was calculated as [(Δδ²_NH + Δδ²_NN/25)/2]^1/2. The insets provide a blow up of the chemical shift perturbations in the C-terminal tail regions.

Chemical shift perturbations in ¹H- ¹⁵N HSQC spectra of 70 µM ¹⁵N-labeled aS, bS, and gS in the presence of 100 µg/ml poly-L-lysine (A), and 50 µg/ml poly-L-argine (B). The weighted average of the ¹H and ¹⁵N chemical shifts of a given residue was calculated as [(Δδ²_NH + Δδ²_NN/25)/2]^1/2. The insets provide a blow up of the chemical shift perturbations in the C-terminal tail regions.