Skip to main content

TYRO3

Function

Receptor tyrosine kinase that transduces signals from the extracellular matrix into the cytoplasm by binding to several ligands including TULP1 or GAS6. Regulates many physiological processes including cell survival, migration and differentiation. Ligand binding at the cell surface induces dimerization and autophosphorylation of TYRO3 on its intracellular domain that provides docking sites for downstream signaling molecules. Following activation by ligand, interacts with PIK3R1 and thereby enhances PI3-kinase activity. Activates the AKT survival pathway, including nuclear translocation of NF-kappa-B and up-regulation of transcription of NF-kappa-B-regulated genes. TYRO3 signaling plays a role in various processes such as neuron protection from excitotoxic injury, platelet aggregation and cytoskeleton reorganization. Plays also an important role in inhibition of Toll-like receptors (TLRs)-mediated innate immune response by activating STAT1, which selectively induces production of suppressors of cytokine signaling SOCS1 and SOCS3.

(Microbial infection) Acts as a receptor for lassa virus and lymphocytic choriomeningitis virus, possibly through GAS6 binding to phosphatidyl-serine at the surface of virion envelope.

(Microbial infection) Acts as a receptor for Ebolavirus, possibly through GAS6 binding to phosphatidyl-serine at the surface of virion envelope.

Post-translational modifications

Autophosphorylated.

Sequence similarities

Belongs to the protein kinase superfamily. Tyr protein kinase family. AXL/UFO subfamily.

Tissue specificity

Abundant in the brain and lower levels in other tissues.

Cellular localization

  • Cell membrane
  • Single-pass type I membrane protein

Alternative names

  • Tyrosine-protein kinase receptor TYRO3
  • Tyrosine-protein kinase BYK
  • Tyrosine-protein kinase DTK
  • Tyrosine-protein kinase RSE
  • Tyrosine-protein kinase SKY
  • Tyrosine-protein kinase TIF
  • TYRO3
  • BYK
  • TIF
  • SKY
  • RSE
  • DTK

Target type

Proteins

Molecular weight

96905Da