| Autor: |
Herrera AI; Department of Biochemistry and Molecular Biophysics, Kansas State University, 141 Chalmers Hall, Manhattan, KS, 66506, USA., Dubey A; Dana-Farber Cancer Institute, Harvard Medical School, 25 Shattuck Street, Boston, MA, 02115, USA.; Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA, 02115, USA., Geisbrecht BV; Department of Biochemistry and Molecular Biophysics, Kansas State University, 141 Chalmers Hall, Manhattan, KS, 66506, USA., Arthanari H; Dana-Farber Cancer Institute, Harvard Medical School, 25 Shattuck Street, Boston, MA, 02115, USA.; Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA, 02115, USA., Prakash O; Department of Biochemistry and Molecular Biophysics, Kansas State University, 141 Chalmers Hall, Manhattan, KS, 66506, USA. omp@ksu.edu. |
| Abstrakt: |
Staphylococcus aureus is a ubiquitous and persistent pathogen of humans and livestock. The bacterium disrupts the host's innate immune system's ability to recognize and clear bacteria with optimal efficiency by expressing a wide variety of virulence proteins. Two single domain protein homologs (EapH1, EapH2) of the extracellular adherence protein (Eap) have been reported. Eap is a multidomain protein that participates in various protein-protein interactions that inhibit the innate immune response, including both the complement and Neutrophil Serine Proteases (NSPs). EapH1 and EapH2 are also inhibitors of NSPs (Stapels et al., Proc Natl Acad Sci 111:13187-13192, 2014), but lack the ability to inhibit the classical, and lectin pathways of the complement activation system (Woehl et al., J Immunol 193:6161-6171, 2014). We continue the characterization of Eap domains, here with the experiments on EapH2, we acquired a series of 2D and 3D NMR spectra of EapH2 in solution. We completed 99% of expected non-proline backbone 1 H, 15 N, and 13 C resonance assignments of EapH2 and predicted secondary structure via the TALOS-N server. The assignment data have been deposited in the BMRB data bank under Accession Number 27540. |
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