2lul

Structural highlights

Function

[TEC_HUMAN] Non-receptor tyrosine kinase that contributes to signaling from many receptors and participates as a signal transducer in multiple downstream pathways, including regulation of the actin cytoskeleton. Plays a redundant role to ITK in regulation of the adaptive immune response. Regulates the development, function and differentiation of conventional T-cells and nonconventional NKT-cells. Required for TCR-dependent IL2 gene induction. Phosphorylates DOK1, one CD28-specific substrate, and contributes to CD28-signaling. Mediates signals that negatively regulate IL2RA expression induced by TCR cross-linking. Plays a redundant role to BTK in BCR-signaling for B-cell development and activation, especially by phosphorylating STAP1, a BCR-signaling protein. Required in mast cells for efficient cytokine production. Involved in both growth and differentiation mechanisms of myeloid cells through activation by the granulocyte colony-stimulating factor CSF3, a critical cytokine to promoting the growth, differentiation, and functional activation of myeloid cells. Participates in platelet signaling downstream of integrin activation. Cooperates with JAK2 through reciprocal phosphorylation to mediate cytokine-driven activation of FOS transcription. GRB10, a negative modifier of the FOS activation pathway, is another substrate of TEC. TEC is involved in G protein-coupled receptor- and integrin-mediated signalings in blood platelets. Plays a role in hepatocyte proliferation and liver regeneration and is involved in HGF-induced ERK signaling pathway. TEC regulates also FGF2 unconventional secretion (endoplasmic reticulum (ER)/Golgi-independent mechanism) under various physiological conditions through phosphorylation of FGF2 'Tyr-215'. May also be involved in the regulation of osteoclast differentiation.^{[1] [2] [3] [4]}

See Also

• Tyrosine kinase

References

1. ↑ Ohya K, Kajigaya S, Kitanaka A, Yoshida K, Miyazato A, Yamashita Y, Yamanaka T, Ikeda U, Shimada K, Ozawa K, Mano H. Molecular cloning of a docking protein, BRDG1, that acts downstream of the Tec tyrosine kinase. Proc Natl Acad Sci U S A. 1999 Oct 12;96(21):11976-81. PMID:10518561
2. ↑ Susaki K, Kitanaka A, Dobashi H, Kubota Y, Kittaka K, Kameda T, Yamaoka G, Mano H, Mihara K, Ishida T. Tec protein tyrosine kinase inhibits CD25 expression in human T-lymphocyte. Immunol Lett. 2010 Jan 4;127(2):135-42. doi: 10.1016/j.imlet.2009.10.009. Epub, 2009 Oct 31. PMID:19883687 doi:http://dx.doi.org/10.1016/j.imlet.2009.10.009
3. ↑ Ebert AD, Laussmann M, Wegehingel S, Kaderali L, Erfle H, Reichert J, Lechner J, Beer HD, Pepperkok R, Nickel W. Tec-kinase-mediated phosphorylation of fibroblast growth factor 2 is essential for unconventional secretion. Traffic. 2010 Jun;11(6):813-26. doi: 10.1111/j.1600-0854.2010.01059.x. Epub 2010 , Mar 10. PMID:20230531 doi:http://dx.doi.org/10.1111/j.1600-0854.2010.01059.x
4. ↑ Mano H, Ohya K, Miyazato A, Yamashita Y, Ogawa W, Inazawa J, Ikeda U, Shimada K, Hatake K, Kasuga M, Ozawa K, Kajigaya S. Grb10/GrbIR as an in vivo substrate of Tec tyrosine kinase. Genes Cells. 1998 Jul;3(7):431-41. PMID:9753425