RAPGEF2
protein-codingRap guanine nucleotide exchange factor 2, the group of MicroRNA protein coding host genes|PDZ domain containing
Gene summary
Members of the RAS (see HRAS; MIM 190020) subfamily 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 RAPGEF2, 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 [PubMed 10934204]).[supplied by OMIM, Mar 2008]
- PDZGEF1
MANE transcript
Inheritance
ClinVar variants
Top phenotype
gnomAD constraint
Max pathogenic AF
Genomic locus
External References & Databases
Transcript & Mutation Effects
hg38 • Region Span ~257.2 kbGenCC Phenotypes & Disease Associations
Curated gene-disease validity assertions and inheritance patterns
Inheritance Pattern: AD
Disease ID:MONDO:0054847
Submitter: Labcorp Genetics (formerly Invitae)
Inheritance Pattern: AD
Disease ID:MONDO:0004976
Submitter: Ambry Genetics
Clinical Genomic Database (CGD)
Manifestation: Neurologic
Intervention: General
Rationale: Genetic knowledge may be beneficial related to issues such as selection of optimal supportive care, informed medical decision-making, prognostic considerations, and avoidance of unnecessary testing
ClinVar Associated Diseases & Phenotypes
Reported disease conditions connected to RAPGEF2 variants in ClinVar
ClinVar Variants & Pathogenicity by Type
Statistics based on transcript NM_001394067.2. Only rare variants are included.
We include only reliable ClinVar variants with their consequences to MANE Select, MANE Plus Clinical transcripts, or transcripts with TSL equal to 1. Click a count to filter the variants table below.
Slight differences between displayed counts and ClinVar may occur due to a different transcript/consequence chosen by our variant effect predictor, or because we classify Benign/Likely benign as Likely benign and Pathogenic/Likely pathogenic as Likely pathogenic.
| Effect | PathogenicP | Likely pathogenicLP | VUS | Likely benignLB | BenignB | Sum |
|---|---|---|---|---|---|---|
| synonymous | 5 | 23 | 5 | 33 | ||
| missense | 131 | 3 | 134 | |||
| nonsense | 0 | |||||
| start loss | 0 | |||||
| frameshift | 2 | 2 | ||||
| splice donor/acceptor (+/-2bp) | 4 | 4 | ||||
| Total | 0 | 0 | 142 | 26 | 5 | 173 |
Transcript Catalog
Annotated transcript isoforms across RefSeq and Ensembl databases
| Transcript ID | Source | Protein ID | Coding Exons | MANE Status |
|---|---|---|---|---|
| RefSeq | NP_001380996.1 | 30 | MANE Select | |
| Ensembl | ENSP00000510694.1 | 30 | MANE Select | |
| RefSeq | NP_001338653.1 | 31 | Standard | |
| RefSeq | NP_001338654.1 | 26 | Standard |
Model Organisms & Knockout Phenotypes
Observed phenotypic effects in mouse and zebrafish models
| Gene / Model | Organism | Observed Phenotype |
|---|---|---|
| rapgef2 | Danio rerio | Structure: pronephric glomerulus Quality: permeability abnormal |
Gene Ontology (GO) Annotations & Pathways
Biological processes, molecular functions, cellular components and pathways
Pathways ConsensusPathDB
- Tight junction - Homo sapiens (human)
- Rap1 signaling pathway - Homo sapiens (human)
- MAPK signaling pathway - Homo sapiens (human)
- Intracellular Signalling Through Adenosine Receptor A2b and Adenosine
- Intracellular Signalling Through Adenosine Receptor A2a and Adenosine
Biological Process
- MAPK cascade
- blood vessel development
- neuron migration
- G protein-coupled receptor signaling pathway
- neuropeptide signaling pathway
Molecular Function
- Ras guanyl-nucleotide exchange factor activity
- GTPase activator activity
- calcium ion binding
- protein binding
- Rap guanyl-nucleotide exchange factor activity
Cellular Component
- cytoplasm
- late endosome
- cytosol
- plasma membrane
- integral component of plasma membrane
gnomAD Constraint
Source:
- Gene type
- protein_coding
- Transcript type
- protein_coding
- Transcript
- ENST00000264431
- Coding exons
- 24
- Length
- 255992
- Individuals with no LoFs
- 124782
- Homozygous LoFs
- 0
- Heterozygous LoFs
- 12
- Defined
- 124794
- p
- 0.0000481
| Z-Score | Observed | Expected | Observed/Expected | Mutation Rate | Total Possible | |
|---|---|---|---|---|---|---|
| Missense | 3.62 | 532 | 824 | 0.645 | 0.0000442 | 9877 |
| Missense (PolyPhen) | 103 | 268.7 | 0.38332 | 3432 | ||
| Synonymous | -0.378 | 307 | 299 | 1.03 | 0.0000171 | 2871 |
| Loss of Function | 7.06 | 8 | 73.1 | 0.109 | 0.00000427 | 834 |
Population LoF Frequency
| Population | CAF | p-value | Status |
|---|---|---|---|
| African | 0 | 0.0 | absent |
| Latino/Admixed American | 0 | 0.0 | absent |
| Ashkenazi Jewish | 0.000099 | 0.000099 | rare |
| East Asian | 0.00011 | 0.00011 | rare |
| Finnish | 0 | 0.0 | absent |
| European (Non-Finnish) | 0.000063 | 0.000062 | rare |
| South Asian | 0.000037 | 0.000033 | rare |
| Other | 0.00017 | 0.00016 | rare |
dbNSFP Gene Annotations
Source:
- Function
- FUNCTION: Functions as a guanine nucleotide exchange factor (GEF), which activates Rap and Ras family of small GTPases by exchanging bound GDP for free GTP in a cAMP-dependent manner. Serves as a link between cell surface receptors and Rap/Ras GTPases in intracellular signaling cascades. Acts also as an effector for Rap1 by direct association with Rap1-GTP thereby leading to the amplification of Rap1-mediated signaling. Shows weak activity on HRAS. It is controversial whether RAPGEF2 binds cAMP and cGMP (PubMed:23800469, PubMed:10801446) or not (PubMed:10608844, PubMed:10548487, PubMed:11359771). Its binding to ligand-activated beta-1 adrenergic receptor ADRB1 leads to the Ras activation through the G(s)-alpha signaling pathway. Involved in the cAMP- induced Ras and Erk1/2 signaling pathway that leads to sustained inhibition of long term melanogenesis by reducing dendrite extension and melanin synthesis. Provides also inhibitory signals for cell proliferation of melanoma cells and promotes their apoptosis in a cAMP-independent nanner. Regulates cAMP-induced neuritogenesis by mediating the Rap1/B-Raf/ERK signaling through a pathway that is independent on both PKA and RAPGEF3/RAPGEF4. Involved in neuron migration and in the formation of the major forebrain fiber connections forming the corpus callosum, the anterior commissure and the hippocampal commissure during brain development. Involved in neuronal growth factor (NGF)-induced sustained activation of Rap1 at late endosomes and in brain- derived neurotrophic factor (BDNF)-induced axon outgrowth of hippocampal neurons. Plays a role in the regulation of embryonic blood vessel formation and in the establishment of basal junction integrity and endothelial barrier function. May be involved in the regulation of the vascular endothelial growth factor receptor KDR and cadherin CDH5 expression at allantois endothelial cell-cell junctions. {ECO:0000269|PubMed:10548487, ECO:0000269|PubMed:10608844, ECO:0000269|PubMed:10608883, ECO:0000269|PubMed:10801446, ECO:0000269|PubMed:10934204, ECO:0000269|PubMed:11359771, ECO:0000269|PubMed:12391161, ECO:0000269|PubMed:16272156, ECO:0000269|PubMed:17724123, ECO:0000269|PubMed:21840392, ECO:0000269|PubMed:23800469}.;
Recessive Scores
- pRec
- 0.133
Intolerance Scores
- LoFtool
- 0.255
- RVIS EVS
- -1.66
- RVIS percentile EVS
- 2.72
Essentials
- Essential (CRISPR)
- N
- Essential (CRISPR2)
- N
- Essential (gene trap)
- N
- Indispensability pred.
- E
- Indispensability score
- 0.828
Gene Damage Prediction
| All | Recessive | Dominant | |
|---|---|---|---|
| Mendelian | Medium | Medium | Medium |
| Primary Immunodeficiency | Medium | Medium | Medium |
| Cancer | Medium | Medium | Medium |