Integrin-Linked Kinase (ILK) Recombinant Protein

This gene encodes a protein with a kinase-like domain and four ankyrin-like repeats. The encoded protein associates at the cell membrane with the cytoplasmic domain of beta integrins, where it regulates integrin-mediated signal transduction. Activity of this protein is important in the epithelial to mesenchymal transition, and over-expression of this gene is implicated in tumor growth and metastasis. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jun 2013]

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: costamere; protein complex; focal adhesion; terminal button; intercellular junction; cytosol; nucleoplasm; sarcomere; membrane; cell soma; lamellipodium; cytoplasm; plasma membrane; stress fiber; dendritic shaft; cell junction

Molecular Function: integrin binding; protein serine/threonine kinase activity; signal transducer activity; protein binding; protein kinase binding; SH3 domain binding; ATP binding

Biological Process: negative regulation of smooth muscle cell proliferation; protein heterooligomerization; cell-matrix adhesion; positive regulation of transcription, DNA-dependent; positive regulation of axon extension; negative regulation of smooth muscle cell migration; protein amino acid phosphorylation; positive regulation of MAP kinase activity; myelin formation; positive regulation of cell proliferation; protein kinase B signaling cascade; fibril organization and biogenesis; negative regulation of neuron apoptosis; positive regulation of cell-matrix adhesion; cell cycle arrest; positive regulation of BMP signaling pathway; integrin-mediated signaling pathway; cell aging; positive regulation of dendrite morphogenesis; positive regulation of myoblast differentiation; myelination in the peripheral nervous system; establishment and/or maintenance of epithelial cell polarity; cell proliferation; positive regulation of osteoblast differentiation; positive regulation of protein kinase B signaling cascade; peptidyl-serine phosphorylation; ureteric bud branching; regulation of actin cytoskeleton organization and biogenesis; negative regulation of protein kinase activity; nerve development; positive regulation of phosphorylation; neurite morphogenesis; positive regulation of cell migration