High-Resolution Structure of the Histidine-Containing Phosphocarrier Protein (HPr) from Staphylococcus aureus and Characterization of Its Interaction with the Bifunctional HPr Kinase/Phosphorylase
High-Resolution Structure of the Histidine-Containing Phosphocarrier Protein (HPr) from Staphylococcus aureus and Characterization of Its Interaction with the Bifunctional HPr Kinase/Phosphorylase
复制标题
金黄色葡萄球菌含组氨酸磷酸化载体蛋白 (HPr) 的高分辨率结构及其与双功能 HPr 激酶/磷酸化酶相互作用的表征
DOI:
10.1128/jb.186.17.5906-5918.2004
复制
发表时间:
2004
影响因子:
3.2
通讯作者:
Maurer
中科院分区:
文献类型:
--
作者:
Maurer
A high-resolution structure of the histidine-containing phosphocarrier protein (HPr) fromStaphylococcus aureuswas obtained by heteronuclear multidimensional nuclear magnetic resonance (NMR) spectroscopy on the basis of 1,766 structural restraints. Twenty-three hydrogen bonds in HPr could be directly detected by polarization transfer from the amide nitrogen to the carbonyl carbon involved in the hydrogen bond. Differential line broadening was used to characterize the interaction of HPr with the HPr kinase/phosphorylase (HPrK/P) ofStaphylococcus xylosus, which is responsible for phosphorylation-dephosphorylation of the hydroxyl group of the regulatory serine residue at position 46. The dissociation constantKdwas determined to be 0.10 ± 0.02 mM at 303 K from the NMR data, assuming independent binding. The data are consistent with a stoichiometry of 1 HPr molecule per HPrK/P monomer in solution. Using transversal relaxation optimized spectroscopy-heteronuclear single quantum correlation, we mapped the interaction site of the two proteins in the 330-kDa complex. As expected, it covers the region around Ser46 and the small helix b following this residue. In addition, HPrK/P also binds to the second phosphorylation site of HPr at position 15. This interaction may be essential for the recognition of the phosphorylation state of His15 and the phosphorylation-dependent regulation of the kinase/phosphorylase activity. In accordance with this observation, the recently published X-ray structure of the HPr/HPrK core protein complex fromLactobacillus caseishows interactions with the two phosphorylation sites. However, the NMR data also suggest differences for the full-length protein fromS. xylosus: there are no indications for an interaction with the residues preceding the regulatory Ser46 residue (Thr41 to Lys45) in the protein ofS. xylosus. In contrast, it seems to interact with the C-terminal helix of HPr in solution, an interaction which is not observed for the complex of HPr with the core of HPrK/P ofL. caseiin crystals.
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DOI:
--
发表时间:
1992
期刊:
影响因子:
--
作者:
G. W. Vuister;A. Bax
通讯作者:
A. Bax
影响因子:
2.9
作者:
H. Kalbitzer;K. Neidig;W. Hengstenberg
通讯作者:
W. Hengstenberg
影响因子:
3.5
作者:
Robert B. Russell;J. Márquez;W. Hengstenberg;K. Scheffzek
通讯作者:
K. Scheffzek
影响因子:
4.8
作者:
Zongchao Jia;J. Quail;E. Waygood;L. Delbaere
通讯作者:
L. Delbaere
影响因子:
5.6
作者:
Nico A. J. van Nuland;R. Boelens;R. Scheek;G. Robillard
通讯作者:
G. Robillard