¹H, ¹³C and ¹⁵N resonance assignments of human parvulin 17.

A 25-residue elongation at the N-terminus endows parvulin 17 (Par17) with altered functional properties compared to parvulin 14 (Par14), such as an enhanced influence on microtubule assembly. Therefore the three-dimensional structure of this N-terminal elongation is of particular interest. Here, we report the nearly complete (1)H, (13)C and (15)N chemical shift assignments of Par17. Subsequent chemical shift index analysis indicated that Par17 features a parvulin-type PPIase domain at the C-terminus, analogous to Par14, and an unstructured N-terminus encompassing the first 60 residues. Hence the N-terminus of Par17 apparently adopts a functionally-relevant structure only in presence of the respective interaction partner(s).