Plexin B1 is a protein of the plexin family that in humans is encoded by the PLXNB1 gene.[5][6][7]
Within neural tissues, the plexin family serves as transmembrane receptors for Semaphorins.[8] Outside of neural tissues, Plexin B1 is implicated in the control of cell migration.[9]
PLXNB1 has been shown to interact with ARHGEF12,[10] Rnd1[11] and ARHGEF11.[10][11][12][13]