Phosphorylation on histidine is accompanied by localized structural changes in the phosphocarrier protein, HPr from Bacillus subtilis.Jones, B.E., Rajagopal, P., Klevit, R.E.
(1997) Protein Sci. 6: 2107-2119
- PubMed: 9336834
- DOI: 10.1002/pro.5560061006
- Primary Citation of Related Structures:  1JEM
- PubMed Abstract:
- Common Structural Changes Accompany the Functional Inactivation of Hpr by Seryl Phosphorylation or by Serine to Aspartate Substitution
Wittekind, M.,Reizer, J.,Deutscher, J.,Saier, M.H.,Klevit, R.E.
(1989) Biochemistry 28: 9908
- Sequence-Specific 1H NMR Resonance Assignments of Bacillus Subtilis Hpr: Use of Spectra Obtained from Mutants to Resolve Spectral Overlap
Wittekind, M.,Reizer, J.,Klevit, R.E.
(1990) Biochemistry 29: 7191
- Solution Structure of the Phosphocarrier Protein Hpr from Bacillus Subtilis by Two-Dimensional NMR Spectroscopy
Wittekind, M.,Rajagopal, P.,Branchini, B.R.,Reizer, J.,Saier Junior, M.H.,Klevit, R.E.
(1992) Protein Sci. 1: 1363
The histidine-containing protein (HPr) of bacterial phosphoenolpyruvate:sugar phosphotransferase system (PTS) serves a central role in a series of phosphotransfer reactions used for the translocation of sugars across cell membranes. These studies rep ...
The histidine-containing protein (HPr) of bacterial phosphoenolpyruvate:sugar phosphotransferase system (PTS) serves a central role in a series of phosphotransfer reactions used for the translocation of sugars across cell membranes. These studies report the high-definition solution structures of both the unphosphorylated and histidine phosphorylated (P-His) forms of HPr from Bacillus subtilis. Consistent with previous NMR studies, local conformational adjustments occur upon phosphorylation of His 15, which positions the phosphate group to serve as a hydrogen bond acceptor for the amide protons of Ala 16 and Arg 17 and to interact favorably with the alpha-helix macrodipole. However, the positively charged side chain of the highly conserved Arg 17 does not appear to interact directly with phospho-His 15, suggesting that Arg 17 plays a role in the recognition of other PTS enzymes or in phosphotransfer reactions directly. Unlike the results reported for Escherichia coli P-His HPr (Van Nuland NA, Boelens R, Scheek RM, Robillard GT, 1995, J Mol Biol 246:180-193), our data indicate that phosphorylation of His 15 is not accompanied by adoption of unfavorable backbone conformations for active site residues in B. subtilis P-Ser HPr.
University of Washington, Department of Biochemistry and Biomolecular Structure Center, Seattle 98195-7742, USA.