Leukocyte Tyrosine Kinase Receptor (LTK) ELISA Kit for Human

The protein encoded by this gene is a member of the ros/insulin receptor family of tyrosine kinases. Tyrosine-specific phosphorylation of proteins is a key to the control of diverse pathways leading to cell growth and differentiation. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Oct 2008]

LTK: Orphan receptor with a tyrosine-protein kinase activity. The exact function of this protein is not known. Studies with chimeric proteins (replacing its extracellular region with that of several known growth factor receptors, such as EGFR and CSFIR) demonstrate its ability to promote growth and specifically neurite outgrowth, and cell survival. Signaling appears to involve the PI3 kinase pathway. Involved in regulation of the secretory pathway involving endoplasmic reticulum (ER) export sites (ERESs) and ER to Golgi transport. Homodimer when bound to ligand (Probable). Part a complex including LTK, TNK2 and GRB2, in which GRB2 promotes LTK recruitment by TNK2. Expressed in non-hematopoietic cell lines and T- and B-cell lines. Belongs to the protein kinase superfamily. Tyr protein kinase family. Insulin receptor subfamily. 4 isoforms of the human protein are produced by alternative splicing.

Protein type: Protein kinase, TK; Kinase, protein; Protein kinase, tyrosine (receptor); EC 2.7.10.1; Membrane protein, integral; TK group; Alk family

Chromosomal Location of Human Ortholog: 15q15.1-q21.1

Cellular Component: integral to plasma membrane; intracellular; membrane; plasma membrane

Molecular Function: ATP binding; protein kinase activity; protein-tyrosine kinase activity; transmembrane receptor protein tyrosine kinase activity

Biological Process: cell proliferation; negative regulation of apoptosis; peptidyl-tyrosine phosphorylation; phosphoinositide 3-kinase cascade; protein amino acid phosphorylation; signal transduction; transmembrane receptor protein tyrosine kinase signaling pathway