Structural Model of Lymphocyte Receptor NKR-P1C Revealed by Mass Spectrometry and Molecular Modeling

0420972 - MBÚ 2014 RIV US eng J - Journal Article
Rozbeský, Daniel - Sovová, Žofie - Marcoux, J. - Man, Petr - Ettrich, Rüdiger - Robinson, C. V. - Novák, Petr
Structural Model of Lymphocyte Receptor NKR-P1C Revealed by Mass Spectrometry and Molecular Modeling.
Analytical Chemistry. Roč. 85, č. 3 (2013), s. 1597-1604. ISSN 0003-2700. E-ISSN 1520-6882
R&D Projects: GA ČR(CZ) GAP207/10/1040; GA ČR GAP207/10/1934; GA ČR GA303/09/0477
Institutional research plan: CEZ:AV0Z60870520
Institutional support: RVO:61388971
Keywords : CHEMICAL CROSS-LINKING * NATURAL-KILLER-CELL * ION MOBILITY
Subject RIV: CB - Analytical Chemistry, Separation
Impact factor: 5.825, year: 2013

NKR-P1C is an activating immune receptor expressed on the surface of mouse natural killer cells. It has been widely used as a marker for NK cell identification in different mice strains. Recently we solved a crystal structure of the C-type lectin-like domain of a homologous protein, NKR-P1A, using X-ray crystallography and also described the strategy for rapid characterization of the protein conformation in solution. This procedure utilized chemical cross-linking, hydrogen/deuterium exchange, and molecular modeling. It was found that the solution structure differs from the crystal structure in the conformation of the loop region. The loop, detached from the protein compact core in the crystal structure, is closely attached to the core of the protein in solution. Here we present and interpret the solution structure of the C-type lectin-like domain of NKR-P1C using chemical cross-linking and molecular modeling. The validation of the model and conformation of the loop region in NKR-P1C were addressed using ion-mobility mass spectrometry
Permanent Link: http://hdl.handle.net/11104/0227583