Date published: 2025-9-9

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Op18 Antibody (A-4): sc-48362

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Datasheets
  • Op18 Antibody (A-4) is a mouse monoclonal IgG2b κ, cited in 12 publications, provided at 200 µg/ml
  • raised against amino acids 1-149 representing full length Op18 of human origin
  • Anti-Op18 Antibody (A-4) is recommended for detection of Op18 and other stathmin family members including stathmin-like protein RB3 and SCG10-like protein of mouse, rat and human origin by WB, IP, IF, IHC(P) and ELISA
  • Anti-Op18 Antibody (A-4) 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
  • Contact our Technical Service Department (or your local Distributor) for more information on how to receive a FREE 10 µg sample of Op18 (A-4): sc-48362.
  • m-IgG Fc BP-HRP and m-IgGκ BP-HRP are the preferred secondary detection reagents for Op18 Antibody (A-4) for WB and IHC(P) applications. These reagents are now offered in bundles with Op18 Antibody (A-4) (see ordering information below).

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SEE ALSO...

Op18 Antibody (A-4) is a mouse monoclonal IgG2b kappa light chain antibody that detects Op18, along with other stathmin family members such as stathmin-like protein RB3 and SCG10-like protein, in mouse, rat, and human samples through applications including western blotting (WB), immunoprecipitation (IP), immunofluorescence (IF), immunohistochemistry, and enzyme-linked immunosorbent assay (ELISA). Op18 (A-4) 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. Op18, also known as oncoprotein 18, stathmin, prosolin, or metablastin, is a highly conserved, tubulin-associated intracellular phosphoprotein that plays a pivotal role in regulating microtubule dynamics. Op18 (A-4) monoclonal antibody functions by modulating the stability and organization of microtubules, which are essential for various cellular processes, including mitosis and intracellular transport. Op18 exists in multiple phosphorylated forms and is expressed as two distinct isoforms, with activity being tightly regulated by phosphorylation events. Notably, Op18 is downregulated by the tumor suppressor protein p53, linking Op18 to critical cell signaling pathways that influence cell proliferation and differentiation. Op18 overexpression is associated with several cancers, including breast carcinomas and various subtypes of acute leukemia, highlighting Op18′s potential as a biomarker and therapeutic target in oncology.

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

Op18 Antibody (A-4) References:

  1. Down-regulation of the stathmin/Op18 and FKBP25 genes following p53 induction.  |  Ahn, J., et al. 1999. Oncogene. 18: 5954-8. PMID: 10557083

Ordering Information

Product NameCatalog #UNITPriceQtyFAVORITES

Op18 Antibody (A-4)

sc-48362
200 µg/ml
$316.00

Op18 Antibody (A-4): m-IgG Fc BP-HRP Bundle

sc-528530
200 µg Ab; 10 µg BP
$354.00

Op18 Antibody (A-4): m-IgGκ BP-HRP Bundle

sc-520926
200 µg Ab, 40 µg BP
$354.00

Op18 Antibody (A-4) AC

sc-48362 AC
500 µg/ml, 25% agarose
$416.00

Op18 Antibody (A-4) HRP

sc-48362 HRP
200 µg/ml
$316.00

Op18 Antibody (A-4) FITC

sc-48362 FITC
200 µg/ml
$330.00

Op18 Antibody (A-4) PE

sc-48362 PE
200 µg/ml
$343.00

Op18 Antibody (A-4) Alexa Fluor® 488

sc-48362 AF488
200 µg/ml
$357.00

Op18 Antibody (A-4) Alexa Fluor® 546

sc-48362 AF546
200 µg/ml
$357.00

Op18 Antibody (A-4) Alexa Fluor® 594

sc-48362 AF594
200 µg/ml
$357.00

Op18 Antibody (A-4) Alexa Fluor® 647

sc-48362 AF647
200 µg/ml
$357.00

Op18 Antibody (A-4) Alexa Fluor® 680

sc-48362 AF680
200 µg/ml
$357.00

Op18 Antibody (A-4) Alexa Fluor® 790

sc-48362 AF790
200 µg/ml
$357.00

What is the complete reactivity of this antibody?

Asked by: AbPolly
Thank you for your question. This antibody is recommended for detection of Op18 and other stathmin family members including stathmin-like protein RB3 and SCG10-like protein. For homology and alignments with other specific protein targets, please contact our Technical Service department.
Answered by: Technical Support 15
Date published: 2017-02-07
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Rated 5 out of 5 by from Excellent results with WBGot strong bands of OP18 in Western blot, used at 1:500 dilution
Date published: 2018-01-27
Rated 4 out of 5 by from Good for IFThis Op18 Antibody (A-4) shows strong specific signal in IF staining in primary rat motor neuron.
Date published: 2017-12-04
Rated 4 out of 5 by from Works by IFThis antibody worked decently in cryosectioned and paraformaldehyde fixed human epidermis, but it was a bit weak at a 1:100 dilution.
Date published: 2017-08-31
Rated 1 out of 5 by from Didn't work-Western BlotWe tried a sample of this antibody when we ran out of our regular anti-stathmin antibody that we normally buy from a different company. This antibody didn't work on our lysates (A20). It only gave a small smudge plus a few dark background bands.
Date published: 2017-08-24
Rated 3 out of 5 by from clear bandwork not very well in A549 cells and Hela cells,diluted at 1:1000
Date published: 2017-07-11
Rated 5 out of 5 by from Very popular choice for IHC(P)This mouse monoclonal Op18 antibody, clone (A-4), is a very popular choice for immunohistochemistry on formalin-fixed paraffin-embedded tissue sections, or IHC(P).
Date published: 2017-01-24
Rated 5 out of 5 by from Great immunoperoxidase cytoplasmic stainingGreat immunoperoxidase cytoplasmic staining in formalin fixed, paraffin-embedded human lymph node tissue. -SCBT QC
Date published: 2015-05-15
Rated 4 out of 5 by from Nice band detected in WB using KNice band detected in WB using K-562 whole cell lysate. -SCBT QC
Date published: 2015-04-17
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Op18 Antibody (A-4) is rated 3.9 out of 5 by 9.
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