Date published: 2026-4-5

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Calnexin Antibody (AF18): sc-23954

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Datasheets
  • Calnexin Antibody (AF18) is a mouse monoclonal IgG1 κ Calnexin antibody, cited in 186 publications, provided at 200 µg/ml
  • raised against human hepatoma cell line
  • Calnexin Antibody (AF18) is recommended for detection of Calnexin of mouse, rat and human origin by WB, IP, IF and IHC(P)
  • Anti-Calnexin Antibody (AF18) 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 Calnexin Antibody (AF18) for WB and IHC(P) applications. These reagents are now offered in bundles with Calnexin Antibody (AF18) (see ordering information below).
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Calnexin Antibody (AF18) is a mouse monoclonal IgG1 kappa light chain antibody raised against a human hepatoma cell line, reactive with Calnexin in mouse, rat, and human samples. Calnexin, also known as CNX, IP90, P90, or CANX, is a calcium-binding chaperone protein localized in the endoplasmic reticulum (ER) membrane. As a type I integral membrane protein, Calnexin plays a crucial role in the quality control system of the ER by interacting with newly synthesized N-linked glycoproteins, ensuring their proper folding and assembly. This function is important because it prevents the accumulation of misfolded proteins, which can lead to cellular stress and diseases such as neurodegeneration. Calnexin binds to monoglucosylated glycoproteins, retaining them in the ER until they achieve their correct conformation. By facilitating the maturation of glycoproteins, Calnexin maintains protein homeostasis within the cell. Anti-Calnexin antibody (AF18) is suitable for applications including western blotting (WB), immunoprecipitation (IP), immunofluorescence (IF), and immunohistochemistry with paraffin-embedded sections (IHCP), making this antibody a valuable tool for researchers studying protein folding, ER stress, and related cellular 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

Calnexin Antibody (AF18) References:

  1. Multiple zones in the sequence of calreticulin (CRP55, calregulin, HACBP), a major calcium binding ER/SR protein.  |  Smith, MJ. and Koch, GL. 1989. EMBO J. 8: 3581-6. PMID: 2583110
  2. The Merck Frosst Award Lecture 1994/La conference Merck Frosst 1994. Calnexin: a molecular chaperone with a taste for carbohydrate.  |  Williams, DB. 1995. Biochem Cell Biol. 73: 123-32. PMID: 7576485
  3. Chaperone function of calreticulin when expressed in the endoplasmic reticulum as the membrane-anchored and soluble forms.  |  Wada, I., et al. 1995. J Biol Chem. 270: 20298-304. PMID: 7657600
  4. Human, mouse, and rat calnexin cDNA cloning: identification of potential calcium binding motifs and gene localization to human chromosome 5.  |  Tjoelker, LW., et al. 1994. Biochemistry. 33: 3229-36. PMID: 8136357
  5. 2,4,6-Trinitrobenzenesulfonic acid modification of the carboxyl-terminal region (C-domain) of calreticulin.  |  Breier, A. and Michalak, M. 1994. Mol Cell Biochem. 130: 19-28. PMID: 8190118
  6. Interaction with newly synthesized and retained proteins in the endoplasmic reticulum suggests a chaperone function for human integral membrane protein IP90 (calnexin).  |  David, V., et al. 1993. J Biol Chem. 268: 9585-92. PMID: 8486646

Ordering Information

Product NameCatalog #UNITPriceQtyFAVORITES

Calnexin Antibody (AF18)

sc-23954
200 µg/ml
$322.00

Calnexin Antibody (AF18): m-IgG Fc BP-HRP Bundle

sc-528384
200 µg Ab; 10 µg BP
$361.00

Calnexin Antibody (AF18): m-IgGκ BP-HRP Bundle

sc-520750
200 µg Ab, 40 µg BP
$361.00

Calnexin Antibody (AF18): m-IgG1 BP-HRP Bundle

sc-542910
200 µg Ab; 20 µg BP
$361.00

Calnexin Antibody (AF18) AC

sc-23954 AC
500 µg/ml, 25% agarose
$424.00

Calnexin Antibody (AF18) HRP

sc-23954 HRP
200 µg/ml
$322.00

Calnexin Antibody (AF18) FITC

sc-23954 FITC
200 µg/ml
$336.00

Calnexin Antibody (AF18) PE

sc-23954 PE
200 µg/ml
$349.00

Calnexin Antibody (AF18) Alexa Fluor® 488

sc-23954 AF488
200 µg/ml
$364.00

Calnexin Antibody (AF18) Alexa Fluor® 546

sc-23954 AF546
200 µg/ml
$364.00

Calnexin Antibody (AF18) Alexa Fluor® 594

sc-23954 AF594
200 µg/ml
$364.00

Calnexin Antibody (AF18) Alexa Fluor® 647

sc-23954 AF647
200 µg/ml
$364.00

Calnexin Antibody (AF18) Alexa Fluor® 680

sc-23954 AF680
200 µg/ml
$364.00

Calnexin Antibody (AF18) Alexa Fluor® 790

sc-23954 AF790
200 µg/ml
$364.00

Where can I find SDS ans CoA documents for Santa cruz antibodies?

Asked by: Anonymous
Thank you for contacting Santa Cruz Biotechnology. We do not offer an SDS or COA for antibodies.Primary antibodies are manufactured in our in-house laboratory and are provided in a solution of 1x PBS, 0.1% sodium azide, and 0.1% gelatin. Our antibodies are non-hazardous and do not require an SDS or COA.
Answered by: BlakeJ
Date published: 2026-03-19

Is it possible to obtain a custom-conjugated version of this antibody with Alexa 568?

Asked by: Laet
Thank you for your question. For further assistance please contact our special orders department for a price quote and ship date. Please email specialorders@scbt.com.
Answered by: BlakeJ
Date published: 2025-01-15

Has this antibody been used in Drosophila?

Asked by: Roger
Thank you for your question. Calnexin (AF18) has not been validated for Drosophila. Drosophila has a 50% homology. We only recommend a specie if the homology is 95% or higher.
Answered by: BlakeJ
Date published: 2024-12-12

Is this probing the N- or C-terminus of Calnexin?

Asked by: psatpute
Thank you for your question. No epitope mapping has been performed for Calnexin Antibody (AF18): sc-23954, so this antibody's epitope region is not known. For an N-terminal Calnexin antibody, check out Calnexin Antibody (E-10): sc-46669 (epitope region corresponding to amino acids 1-70) or see Calnexin Antibody (TO-5): sc-80645 for a C-terminally binding option (epitope region 529-544).
Answered by: Tech Support Europe
Date published: 2020-07-06

I am looking for an antibody that could serve as a negative control for exosomal markers in WB. Some papers have recommended Calnexin as one. I have a podocyte cell lysate as a positive cont for calnexin. Will AF18 be suitable?

Asked by: zrnt
Thank you for your question. We have not evaluated this antibody in a similar research application. This mouse monoclonal antibody, Calnexin (AF18): sc-23954, is specific for the detection of Calnexin in mouse, rat and human samples, and it is suitable for Western blotting. We have excellent data in a variety of whole cell lysates that we would recommend using as a positive control with this antibody.
Answered by: Technical Support
Date published: 2017-08-03

Can you recommend a positive control to use with Calnexin Antibody (AF18): sc-23954 for Western blot?

Asked by: jenni
We recommend A-431: sc-2201, Jurkat: sc-2204 or K-562: sc-2203 or HeLa: sc-2200 whole cell lysates to use as positive controls as we have great Western blot data showing specific detection of Calnexin in these cell lines.
Answered by: Technical Support 15
Date published: 2017-01-09
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Rated 3 out of 5 by from Does not work for Felis catus proteinWe tested it against Felis catus CrFK cells and it did not detected the protein by WB nor IF. However it reacted nicely with human HEK 293 cells.
Date published: 2024-03-28
Rated 5 out of 5 by from calnexin antibody for organelle fractionsInstrumental in detecting proteins within membrane organelle fractions, the Cnx antibody enabled effective comparison between conditions by providing defined bands for normalization. Its contribution to our research was essential in understanding variations in organelle protein composition.
Date published: 2024-01-04
Rated 3 out of 5 by from Nice antibody to be used at high concentrationThe antibody works well and gives one single band!
Date published: 2023-01-31
Rated 5 out of 5 by from Works well in western blotDetects calnexin at the expected moecular weight and a dillution of 1:500 1H at room temp.
Date published: 2020-09-18
Rated 1 out of 5 by from WB反応なしTHP細胞Lysate 4 ug/wellでWestern blot。推奨濃度の抗体と最適化した二次抗体を用いる。検出はECLprime + LAS4010。シグナルなし。一方で同時に評価したE-10は強い単一バンドのシグナル。
Date published: 2019-12-10
Rated 5 out of 5 by from Calnexin Antibody (AF18)Calnexin Antibody (AF18) worked great for IHC. Highly recommended.
Date published: 2019-12-04
Rated 5 out of 5 by from Perfect ER organelle antibodyI used this successfully for western blotting and immunocytostaining. This antibody worked both in human and mouse. This antibody also worked in COS-7 cells which is an African green monkey cells.
Date published: 2019-08-28
Rated 5 out of 5 by from Funziona ottimamente per immunofluorescenzaHo ricevuto come campione gratuito questo Ab e l'ho utilizzato per immunofluorescenza di cellule endoteliali primarie fissate con PFA.
Date published: 2018-05-04
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Calnexin Antibody (AF18) is rated 4.4 out of 5 by 36.
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