ILK: a tyrosine kinase-like kinase of the MLK family. Couples integrins and growth factors to downstream pathways involved in cell survival, cell cycle control, cell-cell adhesion and cell motility. Functions as a scaffold bridging the extra-cellular matrix and growth factor receptors to the actin cytoskeleton through interactions with the ILK-PINCH complex. This complex, which includes integrin, PINCH (which links ILK to receptor tyrosine kinases via Nck2), PARVA and affixin, is considered to be one of the convergence points of integrin- and growth factor-signaling pathways. May be implicated in mediating cell architecture, adhesion to integrin substrates and anchorage-dependent growth in epithelial cells. Stimulated downstream of PI3 kinase. Increased expression is correlated with progression of several tumor types, including breast, prostate, and colon carcinomas. Overexpression drives anchorage-independent growth and faster cell cycle.
Protein type: Kinase, protein; Protein kinase, TKL; Protein kinase, Ser/Thr (non-receptor); EC 2.7.11.1; TKL group; MLK family; ILK subfamily
Chromosomal Location of Human Ortholog: 11p15.4
Cellular Component: cell junction; cell soma; costamere; cytoplasm; cytosol; dendritic shaft; extracellular matrix; focal adhesion; intercellular junction; lamellipodium; membrane; nucleoplasm; plasma membrane; protein complex; sarcomere; stress fiber; terminal button
Molecular Function: ATP binding; integrin binding; protein binding; protein kinase binding; protein serine/threonine kinase activity; SH3 domain binding; signal transducer activity
Biological Process: cell aging; cell cycle arrest; cell proliferation; cell-matrix adhesion; establishment and/or maintenance of epithelial cell polarity; fibril organization and biogenesis; integrin-mediated signaling pathway; myelin formation; myelination in the peripheral nervous system; negative regulation of neuron apoptosis; negative regulation of protein kinase activity; negative regulation of smooth muscle cell migration; negative regulation of smooth muscle cell proliferation; nerve development; neurite morphogenesis; peptidyl-serine phosphorylation; positive regulation of axon extension; positive regulation of BMP signaling pathway; positive regulation of cell migration; positive regulation of cell proliferation; positive regulation of cell-matrix adhesion; positive regulation of dendrite morphogenesis; positive regulation of MAP kinase activity; positive regulation of myoblast differentiation; positive regulation of osteoblast differentiation; positive regulation of phosphorylation; positive regulation of protein kinase B signaling cascade; positive regulation of transcription, DNA-dependent; protein amino acid phosphorylation; protein heterooligomerization; protein kinase B signaling cascade; regulation of actin cytoskeleton organization and biogenesis; ureteric bud branching
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