RASGRF1
Reactivity: Mouse
ELISA, IHC, IF
Host: Rabbit
Polyclonal
unconjugated
Application Notes
Immunohistochemistry on paraffin sections: 1: 50 - 1: 200. Other applications not tested. Optimal dilutions are dependent on conditions and should be determined by the user.
A critical step in signal transduction responses to stimulation of cell surface receptors by their ligands involves the accumulation of Ras proteins in their active GTP-bound state. To reach their active GTP-bound state, Ras proteins must first release bound GDP, a rate limiting step mediated by a guanine nucleotide releasing factor (GRF). The mammalian Ras p21 GRF protein has been designated Ras-GRF1 p140. Ras-GRF1 accelerates release of GDP from H- and N-Ras p21 protein in vitro, but not from the related Ral A or Cdc42Hs GTP-binding proteins. Of interest, a region mapping within the amino terminal domain of Ras-GRF1 is similar to both the human breakpoint cluster protein, Bcr, and the Dbl proto-oncogene product, a guanine nucleotide-releasing factor for Cdc42Hs. Ras-GRF2 p135 has also been identified. Ras-GRF2 p135 is highly homologous to Ras-GRF1 p140 except in the region between the REM and CDC25 domains and appears to function similarly to Ras-GRF1 p140.Synonyms: CDC25, GNRP, GRF1, Guanine nucleotide-releasing protein, Ras-GRF1, Ras-specific guanine nucleotide-releasing factor 1, Ras-specific nucleotide exchange factor CDC25