Two-dimensional 1H–15N HSQC spectrum of uniformly 13C/15N-labeled zf-HIT domain of ZNHIT2 (600 MHz, 298K, protein concentration 1.1 mM in 20 mM phosphate buffer at pH 6.0, 100 mM NaCl). Amino acid assignments of each peak, according to the correlation of the 1H–15N atoms of an amino acid, are shown. Horizontal lines identify side-chain NH2 groups of asparagine and glutamine residues.