Backbone ¹H, ¹⁵N, and ¹³C resonance assignments and secondary structure prediction of NifU-like protein, HP1492 from Helicobacter Pylori

Backbone ¹H, ¹⁵N, and ¹³C resonance assignments and secondary structure prediction of NifU-like protein, HP1492 from Helicobacter Pylori

HP1492 is a NifU-like protein of Helicobacter pylori (H. pylori) and plays a role as a scaffold which transfer Fe-S cluster to Fe-S proteins like Ferredoxin. To understand how to bind to iron ion or iron-sulfur cluster, HP1492 was expressed and purified in Escherichia coli (E. coli). From the NMR measurement, we could carry out the sequence specific backbone resonance assignment of HP1492. Approximately 91% of all resonances could be assigned unambiguously. By analyzing results of CSI and TALOS from NMR data, we could predict the secondary structure of HP1492, which consists of three ${\alpha}$-helices and three ${\beta}$-sheets. This study is an essential step towards the structural characterization of HP1492.