• Product name

  • Description

    Rabbit polyclonal to CalDAG-GEFI
  • Host species

  • Tested applications

    Suitable for: WBmore details
  • Species reactivity

    Reacts with: Mouse, Human
    Predicted to work with: Rat, Cow, Pig
  • Immunogen

    Recombinant fragment corresponding to Human CalDAG-GEFI aa 299-609.

  • Positive control

    • MOLT4, Raji and Mouse liver whole cell lysates.
  • General notes

    Protein previously labeled as RASGRP2.



Our Abpromise guarantee covers the use of ab137608 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
WB 1/500 - 1/3000. Predicted molecular weight: 69 kDa.


  • Function

    Functions as a calcium- and DAG-regulated nucleotide exchange factor specifically activating Rap through the exchange of bound GDP for GTP. May also activates other GTPases such as RRAS, RRAS2, NRAS, KRAS but not HRAS. Functions in aggregation of platelets and adhesion of T-lymphocytes and neutrophils probably through inside-out integrin activation. May function in the muscarinic acetylcholine receptor M1/CHRM1 signaling pathway.
  • Tissue specificity

    Detected in platelets, neutrophils and T lymphocytes (at protein level). Expressed in brain where it is enriched in the striatum. Also expressed in the hematopoietic system. Detected in heart, brain, lung, placenta, liver, skeletal muscle and kidney.
  • Sequence similarities

    Belongs to the RASGRP family.
    Contains 2 EF-hand domains.
    Contains 1 N-terminal Ras-GEF domain.
    Contains 1 phorbol-ester/DAG-type zinc finger.
    Contains 1 Ras-GEF domain.
  • Developmental stage

    Expressed in fetal brain, lung, liver and kidney.
  • Domain

    The N-terminal Ras-GEF domain mediates association with F-actin.
  • Post-translational

    Isoform 2 is palmitoylated and myristoylated while isoform 1.
  • Cellular localization

    Cytoplasm > cytosol. Cell membrane. Cell junction > synapse > synaptosome. Cell projection > ruffle membrane. Found both in the cytosol and associated with membranes. Isoform 2 mainly localizes to the cell membrane. Enriched at juxtamembrane areas and membrane ruffles through association with F-actin. Localizes to the cell bodies and axons of striatal neurons.
  • Information by UniProt
  • Database links

  • Alternative names

    • Calcium and DAG-regulated antibody
    • Calcium and DAG-regulated guanine nucleotide exchange factor I antibody
    • Calcium-and diacylglycerol-regulated guanine nucleotide exchange factor I antibody
    • CalDAG-GEFI antibody
    • Cdc25 like protein antibody
    • Cdc25-like protein antibody
    • F25B3.3 kinase like protein antibody
    • F25B3.3 kinase-like protein antibody
    • GRP2_HUMAN antibody
    • HCDC25L antibody
    • RAS guanyl releasing protein 2 antibody
    • RAS guanyl-releasing protein 2 antibody
    • Rasgrp2 antibody
    see all


  • Anti-CalDAG-GEFI antibody (ab137608) at 1/1000 dilution + Raji whole cell lysate at 30 µg

    Predicted band size: 69 kDa

    7.5% SDS PAGE
  • Anti-CalDAG-GEFI antibody (ab137608) at 1/1000 dilution + Mouse liver lysate at 50 µg

    Predicted band size: 69 kDa

    7.5% SDS PAGE


This product has been referenced in:

  • Vanshylla K  et al. Grb2 and GRAP connect the B cell antigen receptor to Erk MAP kinase activation in human B cells. Sci Rep 8:4244 (2018). Read more (PubMed: 29523808) »
  • Edelmann B  et al. JAK2-V617F promotes venous thrombosis through ß1/ß2 integrin activation. J Clin Invest 128:4359-4371 (2018). Read more (PubMed: 30024857) »
See all 3 Publications for this product

Customer reviews and Q&As

There are currently no Customer reviews or Questions for ab137608.
Please use the links above to contact us or submit feedback about this product.

For licensing inquiries, please contact partnerships@abcam.com

Sign up