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Protein-coding gene in the species Homo sapiens
Rap guanine nucleotide exchange factor 5 is a protein that in humans is encoded by the RAPGEF5 gene .[ 5] [ 6] [ 7]
Members of the RAS subfamily (see HRAS ; MIM 190020) of GTPases function in signal transduction as GTP/GDP-regulated switches that cycle between inactive GDP- and active GTP-bound states. Guanine nucleotide exchange factors (GEFs), such as RAPGEF5, serve as RAS activators by promoting acquisition of GTP to maintain the active GTP-bound state and are the key link between cell surface receptors and RAS activation (Rebhun et al., 2000).[supplied by OMIM][ 7]
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