Lymphocyte phosphatase-associated phosphoprotein (LPAP) is a transmembrane protein with unknown function. The available data on its close association with phosphatase CD45 and its phosphorylation depending on cell activation suggest that LPAP can play a significant role in the antigenic stimulation of lymphocytes. We have localized three antigenic epitopes of the LPAP molecule that can be detected using monoclonal antibodies prepared earlier. Experiments on reactions of antibodies with point mutants and shortened forms of the LPAP protein revealed regions of the amino acid sequence that correspond to the epitopes recognized by the antibodies.
Bibliographical noteFunding Information:
This work was supported by the Russian Foundation for Basic Research (project 12 04 00402) and the Russian Scientific Foundation (project 14 15 00702).
© 2014 Pleiades Publishing, Ltd.
- human lymphocytes
- monoclonal antibodies
- site directed mutagenesis