PLXNB3
Function
Receptor for SEMA5A that plays a role in axon guidance, invasive growth and cell migration. Stimulates neurite outgrowth and mediates Ca(2+)/Mg(2+)-dependent cell aggregation. In glioma cells, SEMA5A stimulation of PLXNB3 results in the disassembly of F-actin stress fibers, disruption of focal adhesions and cellular collapse as well as inhibition of cell migration and invasion through ARHGDIA-mediated inactivation of RAC1.
Sequence Similarities
Belongs to the plexin family.
Tissue Specificity
Expression detected in Purkinje and granular cells in cerebellum, and in brain neocortex but not in corpus callosum. Expressed in glioma cells and embryonic kidney cells (at protein level). Expressed in brain, liver, pancreas and placenta, with weak expression detected also in lung and kidney. Expressed in several glioma cell lines.
Cellular localization
- Cell membrane
- Single-pass type I membrane protein
- Colocalizes with RIT2/RIN at the plasma membrane.
Alternative names
KIAA1206, PLXN6, PLXNB3, Plexin-B3