| RASGRF1 | 
|---|
|  | 
|  | 
| Identifiers | 
|---|
| Aliases | RASGRF1, CDC25, CDC25L, GNRP, GRF1, GRF55, H-GRF55, PP13187, ras-GRF1, Ras protein specific guanine nucleotide releasing factor 1 | 
|---|
| External IDs | OMIM: 606600; MGI: 99694; HomoloGene: 74972; GeneCards: RASGRF1; OMA:RASGRF1 - orthologs | 
|---|
|  | 
| | Gene location (Mouse) | 
|---|
 |  |  | Chr. | Chromosome 9 (mouse) | 
|---|
 |  |  | Band | 9 E3.1|9 47.31 cM | Start | 89,791,961 bp | 
|---|
 | End | 89,909,030 bp | 
|---|
 | 
| | RNA expression pattern | 
|---|
 | Bgee | | Human | Mouse (ortholog) | 
|---|
 | | Top expressed in |  | C1 segment
 right hemisphere of cerebellum
 prefrontal cortex
 right frontal lobe
 Brodmann area 9
 cingulate gyrus
 anterior cingulate cortex
 postcentral gyrus
 islet of Langerhans
 superior frontal gyrus
 | 
 | | Top expressed in |  | pontine nuclei
 paraventricular nucleus of hypothalamus
 dorsal tegmental nucleus
 dorsomedial hypothalamic nucleus
 subiculum
 motor neuron
 arcuate nucleus
 suprachiasmatic nucleus
 lateral hypothalamus
 anterior amygdaloid area
 | 
 |  | More reference expression data | 
 | 
|---|
 | BioGPS |  | 
|---|
 | 
|  | 
|  | 
| Wikidata | 
|  | 
Ras protein-specific guanine nucleotide-releasing factor 1 is a protein in humans that is encoded by the RASGRF1 gene.
The protein encoded by this gene is a guanine nucleotide exchange factor (GEF) similar to the Saccharomyces cerevisiae CDC25 gene product. Functional analysis has demonstrated that this protein stimulates the dissociation of GDP from RAS protein. 
The studies of the similar gene in mice suggested that the Ras-GEF activity of this protein in the brain can be activated by Ca2+ influx, muscarinic receptors, and G protein beta-gamma subunit. Mouse studies also indicated that the Ras-GEF signaling pathway mediated by this protein may be important for long-term memory. Alternatively spliced transcript variants encoding distinct isoforms have been reported. [provided by RefSeq, Mar 2009].