BSH-CP based 3D solid-state NMR experiments for protein resonance assignment

J Biomol NMR. 2014 May;59(1):15-22. doi: 10.1007/s10858-014-9820-8. Epub 2014 Mar 1.

Abstract

We have recently presented band-selective homonuclear cross-polarization (BSH-CP) as an efficient method for CO-CA transfer in deuterated as well as protonated solid proteins. Here we show how the BSH-CP CO-CA transfer block can be incorporated in a set of three-dimensional (3D) solid-state NMR (ssNMR) pulse schemes tailored for resonance assignment of proteins at high static magnetic fields and moderate magic-angle spinning rates. Due to the achieved excellent transfer efficiency of 33 % for BSH-CP, a complete set of 3D spectra needed for unambiguous resonance assignment could be rapidly recorded within 1 week for the model protein ubiquitin. Thus we expect that BSH-CP could replace the typically used CO-CA transfer schemes in well-established 3D ssNMR approaches for resonance assignment of solid biomolecules.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Nuclear Magnetic Resonance, Biomolecular* / methods
  • Proteins / chemistry*
  • Ubiquitin / chemistry

Substances

  • Proteins
  • Ubiquitin