Natural killer (NK) cells play a significant role in the detection and destruction of virally infected and tumor cells. The NKR-P1 receptors regulate NK cell function by an alternative missing-self recognition system. Although the NKR-P1 receptors were among the first surface NK receptors identified on rodent NK cells more than 20 years ago, there is still very little known about their biological function and their physiological ligands. Furthermore, no three-dimensional structure of any of the NKR-P1 family receptors has been published so far. To understand the functional architecture of mouse NKR-P1 receptors, we developed a simple and efficient protocol providing large amounts of pure soluble NKR-P1 proteins. The crystal structure of mouse NKR-P1A, determined at 1.7 A resolution, is the first structure of a representative of the NKR-P1 family. Crystal structure is formed by a compact C-type lectin-like domain and an extended loop that participates in domain swapping. A potential role of the swapped loop has been suggested in natural ligand binding by in silico studies. However, chemical cross-linking and H/D exchange in combination with high resolution mass spectrometry revealed this loop in close proximity to the compact core in solution. The discrepancy between the crystal and solution structure...
| Identifer | oai:union.ndltd.org:nusl.cz/oai:invenio.nusl.cz:322612 |
| Date | January 2013 |
| Creators | Rozbeský, Daniel |
| Contributors | Novák, Petr, Konvalinka, Jan, Drbal, Karel |
| Source Sets | Czech ETDs |
| Language | English |
| Detected Language | English |
| Type | info:eu-repo/semantics/doctoralThesis |
| Rights | info:eu-repo/semantics/restrictedAccess |
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