Research Project
Grant-in-Aid for Scientific Research (B)
This application is to analyze comprehensively about post-translational modification regarding to phosphorylation and ubiquitylation using affinity-chromatography. The system we analyzed is signal transduction system of antigen receptor signals in immune cells, especially phosphorylation and ubiquitylation. The purpose of this project is to clarify the down-stream signal transduction molecules comprehensively from the point of protein modifications.Ubiquitylation and phosphorylation are implicated in the many intracellular phenomenons including signal transduction such as TCR,BCR,FcR signals. We analyze what molecules are ubiquitylated by collecting ubiquitylated proteins with anti-ubiquitin affinity chromatography. We tried to concentrate ubiquitylated proteins and ubiquitin-interacting proteins, to separate by SDS-PAGE, and to analyze these proteins by mass spectrometer. This analysis showed about 700 ubiquitin-related proteins. Furthermore we tried to concentrate tyrosine-phosphorylated proteins by anti-phosphotyrosine and to analyze these proteins by mass spectrometer. This analysis showed about 200 proteins (including novel proteins) which are related to tyrosine phosphorylation. It is significant to clarify the etiology of diseases such as autoimmune diseases and allergic diseases by connecting between protein modifications (such as phosphorylation and ubiquitylation) and activating signals by antigen receptors.
All 2006 2005 2004 Other
All Journal Article (48 results) Book (2 results)
J Cell Sci. 119
Pages: 923-932
J.Cell Sci. 119
Cancer Res. 65
Pages: 7874-7879
J. Biol. Chem. 280
Pages: 5611-5621
Pages: 27866-27871
Mol. Cell. Biol. 25
Pages: 10953-10964
Proteomics 5
Pages: 5145-5152
J. Biol. Chem 280
Pages: 41619-41627
J.Biol.Chem. 280
J.Bio.Chem. 280
Mol.Cell.Biol. 25
Pages: 4145-4151
Methods Enzymol. 399
Pages: 277-286
J. Biol. Chem. 279
Pages: 53533-53543
Nature Cell Biol. 6
Pages: 1229-1235
J. Neurochem. 91
Pages: 299-307
Mol. Endocrinol. 18
Pages: 2451-2462
Pages: 33984-33991
EMBO J. 22
Pages: 2116-2125
Dev. Cell 6
Pages: 661-672
Genes Cells 5
Pages: 533-548
J. Neurochem. 90
Pages: 231-244
EMBO J. 23
Pages: 659-669
J. Exp. Med. 199
Pages: 167-172
Pages: 9417-9423
J.Biol.Chem. 279
J.Neurochem. 91
Mol Endocronol. 18
Dev.Cell 6
Genes Cells 9
J.Neurochem. 90
J.Exp.Med. 199
Proteomics (In press)