Rho GTPase-activating protein SYDE1 (SYDE1)

Rho GTPase-activating protein SYDE1 (SYDE1) is a cytoplasmic enzyme that acts as a GTPase activator for Rho-type GTPases, facilitating the inactivation of these signaling molecules by promoting GTP hydrolysis[4][5][1][3][10]. SYDE1 plays a critical role in regulating cytoskeletal dynamics, including cell adhesion, motility, and synaptic organization[2][4][5]. It is especially important in placental development, controlling trophoblast cell migration and cytoskeletal remodeling as a downstream effector of the transcription factor GCM1[3][4][5][10]. SYDE1 is highly expressed in the placenta and brain, and its function includes mediating neuronal differentiation, synaptic exocytosis, and dendritogenesis[2][6]. Mutations or decreased expression of SYDE1 are implicated in several human diseases, including intrauterine growth restriction, osteogenesis imperfecta, and hypophosphatasia[4][8]. The protein features a RhoGAP domain essential for its activity toward RhoA-family GTPases and is involved in post-translational regulatory networks affecting synaptic plasticity and cellular architecture[2][4]. No drugs are currently known to specifically interact with SYDE1, and it is not a common biomarker for drug selection or monitoring.

Other names

Synapse defective protein 1 homolog 1Protein syd-1 homolog 1SYD17h3FLJ13511synapse defective 1Rho GTPase homolog 1SYDE1