5e6p

Structural highlights

Function

[PLXB2_MOUSE] Cell surface receptor for SEMA4C, SEMA4D and SEMA4G that plays an important role in cell-cell signaling. Binding to class 4 semaphorins promotes downstream activation of RHOA and phosphorylation of ERBB2 at 'Tyr-1248'. Required for normal differentiation and migration of neuronal cells during brain corticogenesis and for normal embryonic brain development. Regulates the migration of cerebellar granule cells in the developing brain. Plays a role in RHOA activation and subsequent changes of the actin cytoskeleton. Plays a role in axon guidance, invasive growth and cell migration. May modulate the activity of RAC1 and CDC42. Down-regulates macrophage migration in wound-healing assays (in vitro).^{[1] [2] [3] [4]} [ARHGB_HUMAN] May play a role in the regulation of RhoA GTPase by guanine nucleotide-binding alpha-12 (GNA12) and alpha-13 (GNA13). Acts as guanine nucleotide exchange factor (GEF) for RhoA GTPase and may act as GTPase-activating protein (GAP) for GNA12 and GNA13.

References

1. ↑ Deng S, Hirschberg A, Worzfeld T, Penachioni JY, Korostylev A, Swiercz JM, Vodrazka P, Mauti O, Stoeckli ET, Tamagnone L, Offermanns S, Kuner R. Plexin-B2, but not Plexin-B1, critically modulates neuronal migration and patterning of the developing nervous system in vivo. J Neurosci. 2007 Jun 6;27(23):6333-47. PMID:17554007 doi:http://dx.doi.org/10.1523/JNEUROSCI.5381-06.2007
2. ↑ Hirschberg A, Deng S, Korostylev A, Paldy E, Costa MR, Worzfeld T, Vodrazka P, Wizenmann A, Gotz M, Offermanns S, Kuner R. Gene deletion mutants reveal a role for semaphorin receptors of the plexin-B family in mechanisms underlying corticogenesis. Mol Cell Biol. 2010 Feb;30(3):764-80. doi: 10.1128/MCB.01458-09. Epub 2009 Nov, 30. PMID:19948886 doi:http://dx.doi.org/10.1128/MCB.01458-09
3. ↑ Maier V, Jolicoeur C, Rayburn H, Takegahara N, Kumanogoh A, Kikutani H, Tessier-Lavigne M, Wurst W, Friedel RH. Semaphorin 4C and 4G are ligands of Plexin-B2 required in cerebellar development. Mol Cell Neurosci. 2011 Feb;46(2):419-31. doi: 10.1016/j.mcn.2010.11.005. Epub, 2010 Nov 29. PMID:21122816 doi:http://dx.doi.org/10.1016/j.mcn.2010.11.005
4. ↑ Roney KE, O'Connor BP, Wen H, Holl EK, Guthrie EH, Davis BK, Jones SW, Jha S, Sharek L, Garcia-Mata R, Bear JE, Ting JP. Plexin-B2 negatively regulates macrophage motility, Rac, and Cdc42 activation. PLoS One. 2011;6(9):e24795. doi: 10.1371/journal.pone.0024795. Epub 2011 Sep 23. PMID:21966369 doi:http://dx.doi.org/10.1371/journal.pone.0024795