Date published: 2026-4-25

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Orai2 Antibody (G-5): sc-376757

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Datasheets
  • Orai2 Antibody (G-5) is a mouse monoclonal IgG1 κ Orai2 antibody, cited in 1 publications, provided at 200 µg/ml
  • raised against amino acids 1-49 mapping at the N-terminus of Orai2 of human origin
  • Orai2 Antibody (G-5) is recommended for detection of Orai2 of mouse, rat and human origin by WB, IP, IF, IHC(P) and ELISA
  • Anti-Orai2 Antibody (G-5) is available conjugated to agarose for IP; HRP for WB, IHC(P) and ELISA; and to either phycoerythrin or FITC for IF, IHC(P) and FCM
  • also available conjugated to Alexa Fluor® 488, Alexa Fluor® 546, Alexa Fluor® 594 or Alexa Fluor® 647 for WB (RGB), IF, IHC(P) and FCM, and for use with RGB fluorescent imaging systems, such as iBright™ FL1000, FluorChem™, Typhoon, Azure and other comparable systems
  • also available conjugated to Alexa Fluor® 680 or Alexa Fluor® 790 for WB (NIR), IF and FCM; for use with Near-Infrared (NIR) detection systems, such as LI-COR®Odyssey®, iBright™ FL1000, FluorChem™, Typhoon, Azure and other comparable systems
  • m-IgG Fc BP-HRP is the preferred secondary detection reagent for Orai2 Antibody (G-5) for WB and IHC(P) applications. This reagent is now offered in a bundle with Orai2 Antibody (G-5) (see ordering information below).
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Orai2 Antibody (G-5) is a mouse monoclonal IgG1 kappa light chain antibody that detects Orai2 of mouse, rat, and human origin by western blotting (WB), immunoprecipitation (IP), immunofluorescence (IF), immunohistochemistry, and enzyme-linked immunosorbent assay (ELISA). anti-Orai2 antibody (G-5) is available in both non-conjugated and various conjugated forms, including agarose, horseradish peroxidase (HRP), phycoerythrin (PE), fluorescein isothiocyanate (FITC), and multiple Alexa Fluor® conjugates. Orai2, also known as orai calcium release-activated calcium modulator 2, CBCIP2 (CAP-binding protein complex-interacting protein 2), or TMEM142B (transmembrane protein 142B), is a 254 amino acid multi-pass membrane protein that regulates calcium influx in cells. Orai2 is primarily located in the plasma membrane, where Orai2 plays a vital role in store-operated calcium (SOC) entry, a mechanism that replenishes calcium stores depleted by inositol 1,4,5-trisphosphate and other calcium-mobilizing agents. Orai2 forms calcium release-activated calcium (CRAC) channels, which are essential for mediating calcium influx in T-cells and are integral to the immune response. Through interaction with calcium sensor Stim1, Orai2 enhances the Ca2+-selective current, facilitating critical cellular processes that depend on calcium signaling.

For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.

Alexa Fluor® is a trademark of Molecular Probes Inc., OR., USA

LI-COR® and Odyssey® are registered trademarks of LI-COR Biosciences

Orai2 Antibody (G-5) References:

  1. A mutation in Orai1 causes immune deficiency by abrogating CRAC channel function.  |  Feske, S., et al. 2006. Nature. 441: 179-85. PMID: 16582901
  2. Large store-operated calcium selective currents due to co-expression of Orai1 or Orai2 with the intracellular calcium sensor, Stim1.  |  Mercer, JC., et al. 2006. J Biol Chem. 281: 24979-90. PMID: 16807233
  3. Calcium inhibition and calcium potentiation of Orai1, Orai2, and Orai3 calcium release-activated calcium channels.  |  DeHaven, WI., et al. 2007. J Biol Chem. 282: 17548-56. PMID: 17452328
  4. 2-Aminoethoxydiphenyl borate directly facilitates and indirectly inhibits STIM1-dependent gating of CRAC channels.  |  Peinelt, C., et al. 2008. J Physiol. 586: 3061-73. PMID: 18403424
  5. A reciprocal shift in transient receptor potential channel 1 (TRPC1) and stromal interaction molecule 2 (STIM2) contributes to Ca2+ remodeling and cancer hallmarks in colorectal carcinoma cells.  |  Sobradillo, D., et al. 2014. J Biol Chem. 289: 28765-82. PMID: 25143380
  6. Identification of TRPCs genetic variants that modify risk for lung cancer based on the pathway and two-stage study.  |  Zhang, Z., et al. 2016. Meta Gene. 9: 191-6. PMID: 27617218
  7. Expression Profiling of Calcium Channels and Calcium-Activated Potassium Channels in Colorectal Cancer.  |  Ibrahim, S., et al. 2019. Cancers (Basel). 11: PMID: 31010205
  8. ORAI2 Promotes Gastric Cancer Tumorigenicity and Metastasis through PI3K/Akt Signaling and MAPK-Dependent Focal Adhesion Disassembly.  |  Wu, S., et al. 2021. Cancer Res. 81: 986-1000. PMID: 33310726
  9. Extracellular cysteines C226 and C232 mediate hydrogen sulfide-dependent inhibition of Orai3-mediated store-operated calcium entry.  |  Fresquez, AM. and White, C. 2022. Am J Physiol Cell Physiol. 322: C38-C48. PMID: 34788146
  10. Orai2 Modulates Store-Operated Ca2+ Entry and Cell Cycle Progression in Breast Cancer Cells.  |  Sanchez-Collado, J., et al. 2021. Cancers (Basel). 14: PMID: 35008277
  11. Peritoneal high-fat environment promotes peritoneal metastasis of gastric cancer cells through activation of NSUN2-mediated ORAI2 m5C modification.  |  Liu, K., et al. 2023. Oncogene. 42: 1980-1993. PMID: 37130916
  12. A Newly Established Cuproptosis-Related Gene Signature for Predicting Prognosis and Immune Infiltration in Uveal Melanoma.  |  Huang, W., et al. 2023. Int J Mol Sci. 24: PMID: 37511120

Ordering Information

Product NameCatalog #UNITPriceQtyFAVORITES

Orai2 Antibody (G-5)

sc-376757
200 µg/ml
$322.00

Orai2 Antibody (G-5): m-IgG Fc BP-HRP Bundle

sc-526047
200 µg Ab; 10 µg BP
$361.00

Orai2 Antibody (G-5) AC

sc-376757 AC
500 µg/ml, 25% agarose
$424.00

Orai2 Antibody (G-5) HRP

sc-376757 HRP
200 µg/ml
$322.00

Orai2 Antibody (G-5) FITC

sc-376757 FITC
200 µg/ml
$336.00

Orai2 Antibody (G-5) PE

sc-376757 PE
200 µg/ml
$349.00

Orai2 Antibody (G-5) Alexa Fluor® 488

sc-376757 AF488
200 µg/ml
$364.00

Orai2 Antibody (G-5) Alexa Fluor® 546

sc-376757 AF546
200 µg/ml
$364.00

Orai2 Antibody (G-5) Alexa Fluor® 594

sc-376757 AF594
200 µg/ml
$364.00

Orai2 Antibody (G-5) Alexa Fluor® 647

sc-376757 AF647
200 µg/ml
$364.00

Orai2 Antibody (G-5) Alexa Fluor® 680

sc-376757 AF680
200 µg/ml
$364.00

Orai2 Antibody (G-5) Alexa Fluor® 790

sc-376757 AF790
200 µg/ml
$364.00

I am using Orai2 (G-5): sc-376757 monoclonal antibody to stain paraffin embedded tissue. Do you recommend antigen retrieval when using this antibody?

Asked by: TinTin
We recommend performing antigen retrieval with sodium citrate buffer (pH 6) and heat. The full protocol can be found here: https://www.scbt.com/scbt/resources/protocols/immunoperoxidase-staining
Answered by: Technical Support
Date published: 2017-02-25
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Rated 5 out of 5 by from WELL FOR WBIT WORKED WELL BY WB IN LAB, WILL PURCHASE IT IN THE FUTURE
Date published: 2017-02-20
Rated 5 out of 5 by from Excellent immunoperoxidase cytoplasmic stainingExcellent immunoperoxidase cytoplasmic staining in formalin fixed, paraffin-embedded human kidney tissue. -SCBT QC
Date published: 2015-04-07
Rated 5 out of 5 by from Satisfactory Western Blot data of Orai2 expressionSatisfactory Western Blot data of Orai2 expression in MCF7 whole cell lysate. -SCBT QC
Date published: 2014-10-04
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Orai2 Antibody (G-5) is rated 5.0 out of 5 by 3.
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