TXK — TXK tyrosine kinase
TXK belongs to a gene co-expression module in 5 of 28 SCUBA cell types. Each module groups genes that rise and fall together in that cell type; the genes it shares a module with are its closest co-expression partners there.
TXK's module in each cell type
| Cell type | Module | Shares the module with | |
|---|---|---|---|
| CD4⁺ T cells | Cytotoxic effector Cytotoxicity | ADGRG1, ATP8B4, CCL3, CCL4, CCL4L2, CSF2, FASLG, GNLY +10 more | View in SCUBA |
| CD8⁺ T cells | Ribosome Biogenesis RNA processing & translation | BTF3, CCND3, EIF3H, EIF3L, ERP29, FBL, FXYD5, LDHB +8 more | View in SCUBA |
| Gamma-delta T cells | Tissue Resident CD103+ Tissue residence | ADRB1, BCAS4, BLMH, CCNJL, CD160, CD96, CLIC5, CLNK +28 more | |
| Innate lymphoid cells | ILC1 Inflammatory Activation Inflammation | ALOX5AP, CNOT7, COMMD10, ELAVL1, FKBP8, FNTA, IFI27L2, IL32 +11 more | View in SCUBA |
| Mucosal-associated invariant T cell | Calcium Signal Integration TCR Signaling | ANKRD44, ARB2A, CAMK2D, DOCK10, ELMO1, EXOC4, FCHSD2, FNDC3A +20 more |
About the gene
| Synonyms | BTKL, PSCTK5, PTK4, RLK, TKL |
|---|---|
| Chromosome | 4: 48066393-48134250 |
| Predicted location | Intracellular |
| Essential gene | No |
| Protein class | Enzymes, Predicted intracellular proteins |
| Molecular function | Kinase, Transferase, Tyrosine-protein kinase |
| Biological process | Adaptive immunity, Immunity, Transcription, Transcription regulation |
Function
Non-receptor tyrosine kinase that plays a redundant role with ITK in regulation of the adaptive immune response. Regulates the development, function and differentiation of conventional T-cells and nonconventional NKT-cells. When antigen presenting cells (APC) activate T-cell receptor (TCR), a series of phosphorylation leads to the recruitment of TXK to the cell membrane, where it is phosphorylated at Tyr-420. Phosphorylation leads to TXK full activation. Also contributes to signaling from many receptors and participates in multiple downstream pathways, including regulation of the actin cytoskeleton. Like ITK, can phosphorylate PLCG1, leading to its localization in lipid rafts and activation, followed by subsequent cleavage of its substrates. In turn, the endoplasmic reticulum releases calcium in the cytoplasm and the nuclear activator of activated T-cells (NFAT) translocates into the nucleus to perform its transcriptional duty. Plays a role in the positive regulation of IFNG transcription in T- helper 1 cells as part of an IFNG promoter-binding complex with PARP1 and EEF1A1. Within the complex, phosphorylates both PARP1 and EEF1A1. Also phosphorylates key sites in LCP2 leading to the up-regulation of Th1 preferred cytokine IL-2. Phosphorylates 'Tyr-201' of CTLA4 which leads to the association of PI-3 kinase with the CTLA4 receptor.
Human Protein Atlas · Open Targets · UniProt
Gene annotation from the Human Protein Atlas and UniProt; see sources & licences.