Date published: 2026-4-24

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Orai1 Antibody (G-2): sc-377281

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Datasheets
  • Orai1 Antibody (G-2) is a mouse monoclonal IgG1 κ Orai1 antibody, cited in 26 publications, provided at 200 µg/ml
  • raised against amino acids 256-301 mapping at the C-terminus of Orai1 of human origin
  • Orai1 Antibody (G-2) is recommended for detection of Orai1 of human origin by WB, IP, IF, IHC(P) and ELISA; also reactive with additional species, including and equine, bovine and porcine
  • Anti-Orai1 Antibody (G-2) 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, m-IgG1 BP-HRP and m-IgGκ BP-HRP are the preferred secondary detection reagents for Orai1 Antibody (G-2) for WB and IHC(P) applications. These reagents are now offered in bundles with Orai1 Antibody (G-2) (see ordering information below).
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Orai1 Antibody (G-2) is a mouse monoclonal IgG1 kappa light chain antibody that detects the Orai1 protein of human origin by western blotting (WB), immunoprecipitation (IP), immunofluorescence (IF), immunohistochemistry with paraffin-embedded sections (IHCP), and enzyme-linked immunosorbent assay (ELISA). Orai1 (G-2) antibody 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. Orai1 protein, also known as ORAI calcium release-activated calcium modulator 1, ORAT1, or TMEM142A, is a 301 amino acid multi-pass membrane protein that is crucial for the process of store-operated calcium entry (SOCE). Located at the plasma membrane, Orai1 serves as a pore-forming subunit of the calcium release-activated calcium (CRAC) channel, which is vital for mediating calcium influx in T-cells and thus plays a significant role in the immune response. Proper functioning of Orai1 is essential for maintaining calcium homeostasis within cells, and mutations in the gene encoding Orai1 can lead to severe combined immunodeficiency (SCID), highlighting Orai1′s importance in immune system functionality. Using anti-Orai1 antibody (G-2) in research can provide valuable insights into calcium signaling mechanisms and their implications in various physiological and pathological processes.

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

Orai1 Antibody (G-2) References:

  1. Biochemical properties and cellular localisation of STIM proteins.  |  Dziadek, MA. and Johnstone, LS. 2007. Cell Calcium. 42: 123-32. PMID: 17382385
  2. Molecular evolution and structural analysis of the Ca(2+) release-activated Ca(2+) channel subunit, Orai.  |  Cai, X. 2007. J Mol Biol. 368: 1284-91. PMID: 17400243
  3. Dissecting ICRAC, a store-operated calcium current.  |  Hogan, PG. and Rao, A. 2007. Trends Biochem Sci. 32: 235-45. PMID: 17434311
  4. 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
  5. Coupling Ca2+ store release to Icrac channel activation in B lymphocytes requires the activity of Lyn and Syk kinases.  |  Chung, SC., et al. 2007. J Cell Biol. 177: 317-28. PMID: 17452533
  6. Murine ORAI2 splice variants form functional Ca2+ release-activated Ca2+ (CRAC) channels.  |  Gross, SA., et al. 2007. J Biol Chem. 282: 19375-84. PMID: 17463004
  7. Dynamic simulation of the effect of calcium-release activated calcium channel on cytoplasmic Ca2+ oscillation.  |  Chen, XF., et al. 2008. Biophys Chem. 136: 87-95. PMID: 18538916
  8. Hair loss and defective T- and B-cell function in mice lacking ORAI1.  |  Gwack, Y., et al. 2008. Mol Cell Biol. 28: 5209-22. PMID: 18591248
  9. Orai1 Inhibitors as Potential Treatments for Pulmonary Arterial Hypertension.  |  Masson, B., et al. 2022. Circ Res. 131: e102-e119. PMID: 36164973
  10. Astrocyte reactivity and inflammation-induced depression-like behaviors are regulated by Orai1 calcium channels.  |  Novakovic, MM., et al. 2023. Nat Commun. 14: 5500. PMID: 37679321
  11. PGE2 Potentiates Orai1-Mediated Calcium Entry Contributing to Peripheral Sensitization.  |  Wei, D., et al. 2024. J Neurosci. 44: PMID: 37952941
  12. Orai1/STIMs modulators in pulmonary vascular diseases.  |  Saint-Martin Willer, A., et al. 2024. Cell Calcium. 121: 102892. PMID: 38735127

Ordering Information

Product NameCatalog #UNITPriceQtyFAVORITES

Orai1 Antibody (G-2)

sc-377281
200 µg/ml
$322.00

Orai1 Antibody (G-2): m-IgG Fc BP-HRP Bundle

sc-529999
200 µg Ab; 10 µg BP
$361.00

Orai1 Antibody (G-2): m-IgGκ BP-HRP Bundle

sc-523263
200 µg Ab, 40 µg BP
$361.00

Orai1 Antibody (G-2): m-IgG1 BP-HRP Bundle

sc-543811
200 µg Ab; 20 µg BP
$361.00

Orai1 Antibody (G-2) AC

sc-377281 AC
500 µg/ml, 25% agarose
$424.00

Orai1 Antibody (G-2) HRP

sc-377281 HRP
200 µg/ml
$322.00

Orai1 Antibody (G-2) FITC

sc-377281 FITC
200 µg/ml
$336.00

Orai1 Antibody (G-2) PE

sc-377281 PE
200 µg/ml
$349.00

Orai1 Antibody (G-2) Alexa Fluor® 488

sc-377281 AF488
200 µg/ml
$364.00

Orai1 Antibody (G-2) Alexa Fluor® 546

sc-377281 AF546
200 µg/ml
$364.00

Orai1 Antibody (G-2) Alexa Fluor® 594

sc-377281 AF594
200 µg/ml
$364.00

Orai1 Antibody (G-2) Alexa Fluor® 647

sc-377281 AF647
200 µg/ml
$364.00

Orai1 Antibody (G-2) Alexa Fluor® 680

sc-377281 AF680
200 µg/ml
$364.00

Orai1 Antibody (G-2) Alexa Fluor® 790

sc-377281 AF790
200 µg/ml
$364.00

请问这个货号抗体能否检测大鼠的样品?

Asked by: Sumatra
感谢您的提问。Orai1 抗体 (G-2): sc-377281不推荐检测大鼠的样品。 Thank you for your question. Orai1 antibody (G-2): sc-377281 is not recommended to detect rat sample.
Answered by: Technical Service SH
Date published: 2025-08-11

I am using the LiCor/Odyssey system. Which secondary antibody do you recommend using with Orai1 (G-2): sc-377281 monoclonal antibody?

Asked by: jenni
We recommend using one of our our exclusive Mouse IgG Binding Proteins (m-IgGκ) conjugated to CFL 680 or CFL 790. They are suitable for use with Near-Infrared (NIR) detection systems, such as LI-COR/Odyssey and other comparable systems. A complete list of available binding proteins is available on our website here: https://www.scbt.com/scbt/browse/support-products-mouse-igg-binding-proteins/_/N-ecrety
Answered by: Technical Support 5
Date published: 2017-01-18
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Rated 5 out of 5 by from Good effectGood effect, used for immunofluorescence, immunoprecipitation and western blotting
Date published: 2023-05-30
Rated 1 out of 5 by from Does not work for flow cytometryTested this antibody in FCM assay with HFF cells, but did not work.
Date published: 2018-11-15
Rated 1 out of 5 by from didn't workWe tried a free sample for Jurkat cell lysate and the antibody (1:200)didn't work for us. It was very dirty and smeary.
Date published: 2018-04-30
Rated 4 out of 5 by from Orai1 monoclonal antibodyI got a free testing sample and the result is good
Date published: 2017-12-19
Rated 4 out of 5 by from 期待的效果关于Orai1的抗体先后试了很多个,感觉这个抗体产品的条带相对比较单一,不过有时候可能和样品的种类有关。我们主要用于血管组织总蛋白的检测,偶尔也会有杂带干扰,不过总体感觉相对好一些,好的抗体省时省力,我们会继续关注此类抗体。
Date published: 2017-10-03
Rated 5 out of 5 by from 做WB检测OK之前使用了试用装,进行了WB实验,与其他的国产抗体相比较,感觉条带比较单一,几乎没有杂带。效果不错,想再次订购一只
Date published: 2017-05-02
Rated 5 out of 5 by from Great westernVery clear western blot data; strong signal with little to no background
Date published: 2017-02-01
Rated 5 out of 5 by from Recommended for WBThis antibody is recommended for detection of Orai1 of human origin by WB, IP, IF and ELISA; also reactive with additional species, including and equine, bovine and porcine
Date published: 2016-12-23
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Orai1 Antibody (G-2) is rated 3.9 out of 5 by 9.
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