Figure 1.

2D [15N,1H]‐HSQC spectrum of the HKU9 C domain. 1.2 mM 15N‐labeled HKU9 C in a 20 mM sodium phosphate (pH = 6.0), 150 mM NaCl, 3% d₁₀‐DTT, 0.02% (w/v) NaN₃ solution was measured on a Bruker Avance III 600MHz spectrometer. Backbone 15N–¹H correlation peaks are indicated by single letter amino acid nomenclature. Arg and Trp assigned 15N‐¹Hε correlation peaks are labeled. The amide side chain 15N–¹H₂ signals from Asn and Gln are shown with horizontal lines