The Ras-like GTPase Rem2 is a potent endogenous inhibitor of calcium/calmodulin-dependent kinase II activity
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Activation of calcium/calmodulin-dependent kinase II following bovine rotavirus enterotoxin NSP4 expression
Objective(s): The rotavirus nonstructural protein 4 (NSP4) is responsible for the increase in cytoplasmic calcium concentration through a phospholipase C-dependent and phospholipase C-independent pathways in infected cells. It is shown that increasing of intracellular calcium concentration in rotavirus infected cells is associated with the activation of some members of protein kinases family su...
متن کاملPhosphorylation of critical serine residues in Gem separates cytoskeletal reorganization from down-regulation of calcium channel activity.
Gem is a small GTP-binding protein that has a ras-like core and extended chains at each terminus. The primary structure of Gem and other RGK family members (Rad, Rem, and Rem2) predicts a GTPase deficiency, leading to the question of how Gem functional activity is regulated. Two functions for Gem have been demonstrated, including inhibition of voltage-gated calcium channel activity and inhibiti...
متن کاملCaMKII-dependent phosphorylation of the GTPase Rem2 is required to restrict dendritic complexity.
The morphogenesis of the dendritic arbor is a critical aspect of neuronal development, ensuring that proper neural networks are formed. However, the molecular mechanisms that underlie this dendritic remodeling remain obscure. We previously established the activity-regulated GTPase Rem2 as a negative regulator of dendritic complexity. In this study, we identify a signaling pathway whereby Rem2 r...
متن کامل14-3-3 and calmodulin control subcellular distribution of Kir/Gem and its regulation of cell shape and calcium channel activity.
Individual members of the RGK family of Ras-related GTPases, which comprise Rad, Gem/Kir, Rem and Rem2, have been implicated in important functions such as the regulation of voltage-gated calcium channel activity and remodeling of cell shape. The GTPase Kir/Gem inhibits the activity of calcium channels by interacting with the beta-subunit and also regulates cytoskeleton dynamics by inhibiting t...
متن کاملSmall GTPase Rin induces neurite outgrowth through Rac/Cdc42 and calmodulin in PC12 cells
The novel Ras-like small GTPase Rin is expressed prominently in adult neurons, and binds calmodulin (CaM) through its COOH-terminal-binding motif. It might be involved in calcium/CaM-mediated neuronal signaling, but Rin-mediated signal transduction pathways have not yet been elucidated. Here, we show that expression of Rin induces neurite outgrowth without nerve growth factor or mitogen-activat...
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تاریخ انتشار 2017