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• W2111663695 abstract "Synapses mediate information flow between neurons and undergo plastic changes in response to experience, which is critical for learning and memory. Conversely, synaptic defects impair information processing and underlie many brain pathologies. Rho-family GTPases control synaptogenesis by transducing signals from extracellular stimuli to the cytoskeleton and nucleus. The Rho-GTPases Rac1 and Cdc42 promote synapse development and the growth of axons and dendrites, while RhoA antagonizes these processes. Despite its importance, many aspects of Rho-GTPase signaling remain relatively unknown. Rho-GTPases are activated by guanine nucleotide exchange factors (GEFs) and inhibited by GTPase-activating proteins (GAPs). Though the number of both GEFs and GAPs greatly exceeds that of Rho-GTPases, loss of even a single GEF or GAP often has profound effects on cognition and behavior. Here, we explore how the actions of specific GEFs and GAPs give rise to the precise spatiotemporal activation patterns of Rho-GTPases in neurons. We consider the effects of coupling GEFs and GAPs targeting the same Rho-GTPase and the modular pathways that connect specific cellular stimuli with a given Rho-GTPase via different GEFs. We discuss how the creation of sharp borders between Rho-GTPase activation zones is achieved by pairing a GEF for one Rho-GTPase with a GAP for another and the extensive crosstalk between different Rho-GTPases. Given the importance of synapses for cognition and the fundamental roles that Rho-GTPases play in regulating them, a detailed understanding of Rho-GTPase signaling is essential to the progress of neuroscience." @default.
• W2111663695 created "2016-06-24" @default.
• W2111663695 creator A5008908314 @default.
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• W2111663695 creator A5050964703 @default.
• W2111663695 creator A5066150586 @default.
• W2111663695 creator A5076987985 @default.
• W2111663695 date "2015-08-01" @default.
• W2111663695 modified "2023-09-24" @default.
• W2111663695 title "Mechanisms for spatiotemporal regulation of Rho-GTPase signaling at synapses" @default.
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• W2111663695 doi "https://doi.org/10.1016/j.neulet.2015.05.034" @default.
• W2111663695 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/4513188" @default.
• W2111663695 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/26003445" @default.
• W2111663695 hasPublicationYear "2015" @default.
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