• Product name

    Anti-RAPGEF2 antibody
  • Description

    Rabbit polyclonal to RAPGEF2
  • Host species

  • Tested applications

    Suitable for: IHC-Pmore details
  • Species reactivity

    Reacts with: Human
    Predicted to work with: Mouse, Rabbit, Horse, Guinea pig, Dog, Pig, Chimpanzee, Rhesus monkey, Gorilla, Chinese hamster, Elephant
  • Immunogen

    Synthetic peptide, corresponding to a region within the internal sequence amino acids 975-1025 of Human RAPGEF2 (NP_055062.1, GeneID 9693).

  • Positive control

    • Human Anaplastic Thyroid Carcinoma, Breast Carcinoma, Colon Carcinoma, Lung Adenocarcinoma and Ovarian Carcinoma



Our Abpromise guarantee covers the use of ab105110 in the following tested applications.

The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.

Application Abreviews Notes
IHC-P 1/100 - 1/500. Perform heat mediated antigen retrieval with Tris/EDTA buffer pH 9.0 before commencing with IHC staining protocol. ab105110 is likely to work with frozen sections too.


  • 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.
  • Tissue specificity

    Expressed in primary neuronal and endocrine cells (at protein level). Highest expression levels in brain. Lower expression levels in heart, kidney, lung, placenta and blood leukocytes.
  • Sequence similarities

    Belongs to the RAPGEF2 family.
    Contains 1 cyclic nucleotide-binding domain.
    Contains 1 N-terminal Ras-GEF domain.
    Contains 1 PDZ (DHR) domain.
    Contains 1 Ras-associating domain.
    Contains 1 Ras-GEF domain.
  • Domain

    The Ras-associating domain is necessary for the Rap guanine nucleotide exchange activity. The N-terminal regionis necessary for cAMP-binding. The PDZ domain is necessary for its targeting to the cell membrane.
  • Post-translational

    Ubiquitinated by NEDD4, leading to proteasomal degradation.
    Phosphorylation by PLK2 promotes its activity.
  • Cellular localization

    Cytoplasm. Cytoplasm, perinuclear region. Cell membrane. Late endosome. Cell junction. Associated with the synaptic plasma membrane. Colocalizes with ADRB1 at the plasma membrane. Synaptosome. Enriched in synaptic plasma membrane and neuronal cell body. Colocalized with CTNNB1 at cell-cell contacts (By similarity). Localized diffusely in the cytoplasm before neuronal growth factor (NGF) stimulation. Recruited to late endosomes after NGF stimulation. Colocalized with the high affinity nerve growth factor receptor NTRK1 at late endosomes. Translocated to the perinuclear region in a RAP1A-dependent manner. Translocated to the cell membrane.
  • Information by UniProt
  • Database links

  • Alternative names

    • CNrasGEF antibody
    • Cyclic nucleotide ras GEF antibody
    • KIAA0313 antibody
    • Neural RAP guanine nucleotide exchange protein antibody
    • nRap GEP antibody
    • NRAPGEP antibody
    • PDZ domain containing guanine nucleotide exchange factor 1 antibody
    • PDZ domain-containing guanine nucleotide exchange factor 1 antibody
    • PDZ GEF1 antibody
    • PDZ-GEF1 antibody
    • PDZGEF1 antibody
    • RA GEF antibody
    • RA-GEF-1 antibody
    • Rap guanine nucleotide exchange factor 2 antibody
    • Rapgef2 antibody
    • Ras/Rap1-associating GEF-1 antibody
    • RPGF2_HUMAN antibody
    see all


  • ab105110, at a 1/250 dilution, staining RAPGEF2 in formalin fixed, paraffin embedded Human lung adenocarcinoma tissue by Immunohistochemistry. Detection: DAB staining


ab105110 has not yet been referenced specifically in any publications.

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