Overview

  • Product nameAnti-MUC1 antibody [EPR1023]
    See all MUC1 primary antibodies
  • Description
    Rabbit monoclonal [EPR1023] to MUC1
  • Specificityab109185 detects the full-length MUC1 and the 17 kDa carboxy-terminal subunit (subunit beta).
  • Tested applicationsSuitable for: ICC/IF, WB, IP, IHC-P, Flow Cytmore details
  • Species reactivity
    Reacts with: Human
  • Immunogen

    Synthetic peptide (the amino acid sequence is considered to be commercially sensitive) corresponding to Human MUC1 aa 1200-1300 (C terminal).

  • Positive control
    • T47-D cell lysate, colon cancer lysate, Human breast carcinoma tissue, Human normal breast tissue.
  • General notes

    Produced using Abcam's RabMAb® technology. RabMAb® technology is covered by the following U.S. Patents, No. 5, 675, 063 and/or 7, 429, 487.

    We are constantly working hard to ensure we provide our customers with best in class antibodies. As a result of this work we are pleased to now offer this antibody in purified format. We are in the process of updating our datasheets. The purified format is designated 'PUR' on our product labels. If you have any questions regarding this update, please contact our Scientific Support team.

    This product is a recombinant rabbit monoclonal antibody.

Properties

Applications

Our Abpromise guarantee covers the use of ab109185 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
ICC/IF 1/1000.

For unpurified use at 1/100 - 1/250.

WB 1/1000 - 1/5000. Predicted molecular weight: 122 kDa.
IP 1/20.

For unpurified use at 1/10 - 1/100.

IHC-P 1/250 - 1/500. Perform heat mediated antigen retrieval before commencing with IHC staining protocol.

See protocols (link: http://www.abcam.com/protocols/ihc-antigen-retrieval-protocol).

Flow Cyt 1/30.

For unpurified use at 1/100 - 1/1000.

ab172730 - Rabbit monoclonal IgG, is suitable for use as an isotype control with this antibody.

Target

  • FunctionThe alpha subunit has cell adhesive properties. Can act both as an adhesion and an anti-adhesion protein. May provide a protective layer on epithelial cells against bacterial and enzyme attack.
    The beta subunit contains a C-terminal domain which is involved in cell signaling, through phosphorylations and protein-protein interactions. Modulates signaling in ERK, SRC and NF-kappa-B pathways. In activated T-cells, influences directly or indirectly the Ras/MAPK pathway. Promotes tumor progression. Regulates TP53-mediated transcription and determines cell fate in the genotoxic stress response. Binds, together with KLF4, the PE21 promoter element of TP53 and represses TP53 activity.
  • Tissue specificityExpressed on the apical surface of epithelial cells, especially of airway passages, breast and uterus. Also expressed in activated and unactivated T-cells. Overexpressed in epithelial tumors, such as breast or ovarian cancer and also in non-epithelial tumor cells. Isoform Y is expressed in tumor cells only.
  • Involvement in diseaseMUC1/CA 15-3 is used as a serological clinical marker of breast cancer to monitor response to breast cancer treatment and disease recurrence (PubMed:20816948). Decreased levels over time may be indicative of a positive response to treatment. Conversely, increased levels may indicate disease progression. At an early stage disease, only 21% of patients exhibit high MUC1/CA 15-3 levels, that is why CA 15-3 is not a useful screening test. Most antibodies target the highly immunodominant core peptide domain of 20 amino acid (APDTRPAPGSTAPPAHGVTS) tandem repeats. Some antibodies recognize glycosylated epitopes.
    Medullary cystic kidney disease 1
  • Sequence similaritiesContains 1 SEA domain.
  • Developmental stageDuring fetal development, expressed at low levels in the colonic epithelium from 13 weeks of gestation.
  • Post-translational
    modifications
    Highly glycosylated (N- and O-linked carbohydrates and sialic acid). O-glycosylated to a varying degree on serine and threonine residues within each tandem repeat, ranging from mono- to penta-glycosylation. The average density ranges from about 50% in human milk to over 90% in T47D breast cancer cells. Further sialylation occurs during recycling. Membrane-shed glycoproteins from kidney and breast cancer cells have preferentially sialyated core 1 structures, while secreted forms from the same tissues display mainly core 2 structures. The O-glycosylated content is overlapping in both these tissues with terminal fucose and galactose, 2- and 3-linked galactose, 3- and 3,6-linked GalNAc-ol and 4-linked GlcNAc predominating. Differentially O-glycosylated in breast carcinomas with 3,4-linked GlcNAc. N-glycosylation consists of high-mannose, acidic complex-type and hybrid glycans in the secreted form MUC1/SEC, and neutral complex-type in the transmembrane form, MUC1/TM.
    Proteolytic cleavage in the SEA domain occurs in the endoplasmic reticulum by an autoproteolytic mechanism and requires the full-length SEA domain as well as requiring a Ser, Thr or Cys residue at the P + 1 site. Cleavage at this site also occurs on isoform MUC1/X but not on isoform MUC1/Y. Ectodomain shedding is mediated by ADAM17.
    Dual palmitoylation on cysteine residues in the CQC motif is required for recycling from endosomes back to the plasma membrane.
    Phosphorylated on tyrosines and serine residues in the C-terminal. Phosphorylation on tyrosines in the C-terminal increases the nuclear location of MUC1 and beta-catenin. Phosphorylation by PKC delta induces binding of MUC1 to beta-catenin/CTNNB1 and thus decreases the formation of the beta-catenin/E-cadherin complex. Src-mediated phosphorylation inhibits interaction with GSK3B. Src- and EGFR-mediated phosphorylation on Tyr-1229 increases binding to beta-catenin/CTNNB1. GSK3B-mediated phosphorylation on Ser-1227 decreases this interaction but restores the formation of the beta-cadherin/E-cadherin complex. On T-cell receptor activation, phosphorylated by LCK. PDGFR-mediated phosphorylation increases nuclear colocalization of MUC1CT and CTNNB1.
    The N-terminal sequence has been shown to begin at position 24 or 28.
  • Cellular localizationSecreted; Cell membrane. Cytoplasm. Nucleus. On EGF and PDGFRB stimulation, transported to the nucleus through interaction with CTNNB1, a process which is stimulated by phosphorylation. On HRG stimulation, colocalizes with JUP/gamma-catenin at the nucleus and Apical cell membrane. Exclusively located in the apical domain of the plasma membrane of highly polarized epithelial cells. After endocytosis, internalized and recycled to the cell membrane. Located to microvilli and to the tips of long filopodial protusions.
  • Information by UniProt
  • Database links
  • Alternative names
    • ADMCKD antibody
    • ADMCKD1 antibody
    • Breast carcinoma associated antigen DF3 antibody
    • Breast carcinoma-associated antigen DF3 antibody
    • CA 15-3 antibody
    • CA15 3 antibody
    • CA15 3 antigen antibody
    • CA15.3 antibody
    • Cancer antigen 15-3 antibody
    • Carcinoma associated mucin antibody
    • Carcinoma-associated mucin antibody
    • CD 227 antibody
    • CD227 antibody
    • DF3 antigen antibody
    • EMA antibody
    • Episialin antibody
    • H23 antigen antibody
    • H23AG antibody
    • KL 6 antibody
    • KL-6 antibody
    • KL6 antibody
    • Krebs von den Lungen-6 antibody
    • MAM 6 antibody
    • MAM6 antibody
    • MCD antibody
    • MCKD antibody
    • MCKD1 antibody
    • Medullary cystic kidney disease 1 (autosomal dominant) antibody
    • Medullary cystic kidney disease, autosomal dominant antibody
    • MUC 1 antibody
    • MUC-1 antibody
    • MUC-1/SEC antibody
    • MUC-1/X antibody
    • MUC1 antibody
    • MUC1-alpha antibody
    • MUC1-beta antibody
    • MUC1-CT antibody
    • MUC1-NT antibody
    • MUC1/ZD antibody
    • MUC1_HUMAN antibody
    • Mucin 1 antibody
    • Mucin 1 transmembrane antibody
    • Mucin 1, cell surface associated antibody
    • Mucin-1 subunit beta antibody
    • Peanut reactive urinary mucin antibody
    • Peanut-reactive urinary mucin antibody
    • PEM antibody
    • PEMT antibody
    • Polymorphic epithelial mucin antibody
    • PUM antibody
    • Tumor associated epithelial membrane antigen antibody
    • Tumor associated epithelial mucin antibody
    • Tumor associated mucin antibody
    • Tumor-associated epithelial membrane antigen antibody
    • Tumor-associated mucin antibody
    see all

Anti-MUC1 antibody [EPR1023] images

  • Anti-MUC1 antibody [EPR1023] (ab109185) at 1/1000 dilution (Purified antibody) + Colon cancer at 10 µg

    Secondary
    Anti-Rabbit IgG (HRP), specific to the non-reduced form of IgG at 1/1000 dilution

    Predicted band size : 122 kDa
    Observed band size : 24 kDa (why is the actual band size different from the predicted?)

    Blocking buffer: 5% NFDM/TBST

    Dilution buffer: 5% NFDM/TBST

  • Immunohistochemical staining of paraffin embedded human endometrium with purified ab109185 at a working dilution of 1 in 500. The secondary antibody used is a HRP polymer for rabbit IgG. The sample is counter-stained with hematoxylin. Antigen retrieval was perfomed using Tris-EDTA buffer, pH 9.0. PBS was used instead of the primary antibody as the negative control, and is shown in the inset.

  • Immunohistochemical staining of paraffin embedded mouse lung with purified ab109185 at a working dilution of 1 in 500. The secondary antibody used is a HRP polymer for rabbit IgG. The sample is counter-stained with hematoxylin. Antigen retrieval was perfomed using Tris-EDTA buffer, pH 9.0. PBS was used instead of the primary antibody as the negative control, and is shown in the inset.

  • Immunohistochemical staining of paraffin embedded rat kidney with purified ab109185 at a working dilution of 1 in 500. The secondary antibody used is a HRP polymer for rabbit IgG. The sample is counter-stained with hematoxylin. Antigen retrieval was perfomed using Tris-EDTA buffer, pH 9.0. PBS was used instead of the primary antibody as the negative control, and is shown in the inset.

  • Immunofluorescence staining of A431 cells with purified ab109185 at a working dilution of 1 in 1000, counter-stained with DAPI. The secondary antibody was Alexa Fluor® 555 goat anti rabbit, used at a dilution of 1 in 400. The cells were fixed in 4% PFA and permeabilized using 0.1% Triton X 100. The negative control is shown in bottom right hand panel - for the negative control, purified ab109185 was used at a dilution of 1/200 followed by an Alexa Fluor® 555 goat anti-mouse antibody at a dilution of 1/500.

  • Anti-MUC1 antibody [EPR1023] (ab109185) at 1/5000 dilution (Purified) + T47D cell lysate at 10 µg

    Secondary
    Secondary ab: Anti-Rabbit IgG (HRP), specific to the non-reduced form of IgG at 1/1000 dilution

    Predicted band size : 122 kDa
    Observed band size : 18-25 kDa (why is the actual band size different from the predicted?)

    Blocking buffer: 5% NFDM/TBST

    Dilution buffer: 5% NFDM/TBST

  • ab109185 (unpurified) showing positive staining in Breast ductal infiltrating carcinoma tissue.

  • ab109185 (unpurified) showing positive staining in Normal stomach tissue.

  • ab109185 (purified) at 1/20 immunoprecipitating MUC1 in T47-D (Lane 1). Lane 2 - PBS. For western blotting, a HRP-conjugated anti-rabbit IgG, specific to the non-reduced form of IgG was used as the secondary antibody (1/1500).

    Blocking buffer and concentration: 5% NFDM/TBST.

    Diluting buffer and concentration: 5% NFDM /TBST.

  • Overlay histogram showing MCF7 cells fixed in 2% PFA and stained with purified ab109185 at a dilution of 1 in 30 (pink line). The secondary antibody used was FITC goat anti-rabbit at a dilution of 1 in 150. Rabbit monoclonal IgG was used as an isotype control.

  • All lanes : Anti-MUC1 antibody [EPR1023] (ab109185) at 1/1000 dilution (Unpurified)

    Lane 1 : T47-D cell lysate
    Lane 2 : Human colon cancer lysate

    Lysates/proteins at 10 µg per lane.


    Performed under reducing conditions.

    Predicted band size : 122 kDa
    Additional bands at : 17 kDa (possible cleavage fragment).
  • Overlay histogram showing MCF7 cells stained with unpurified ab109185 (red line). The cells were fixed with 80% methanol (5 min) and then permeabilized with 0.1% PBS-Tween for 20 min. The cells were then incubated in 1x PBS / 10% normal goat serum / 0.3M glycine to block non-specific protein-protein interactions followed by the antibody (ab109185, 1/1000 dilution) for 30 min at 22°C. The secondary antibody used was Alexa Fluor® 488 goat anti-rabbit IgG (H&L) (ab150077) at 1/2000 dilution for 30 min at 22°C. Isotype control antibody (black line) was rabbit IgG (monoclonal) (0.1μg/1x106 cells) used under the same conditions. Unlabelled sample (blue line) was also used as a control. Acquisition of >5,000 events were collected using a 20mW Argon ion laser (488nm) and 525/30 bandpass filter. This antibody gave a positive signal in MCF7 cells fixed with 4% paraformaldehyde (10 min)/permeabilized with 0.1% PBS-Tween for 20 min used under the same conditions.

  • Equilibrium disassociation constant (KD) of unpurified ab109185.
    Learn more about KD

    Click here to learn more about KD

References for Anti-MUC1 antibody [EPR1023] (ab109185)

This product has been referenced in:
  • Li J  et al. Combination of curcumin and bicalutamide enhanced the growth inhibition of androgen-independent prostate cancer cells through SAPK/JNK and MEK/ERK1/2-mediated targeting NF-?B/p65 and MUC1-C. J Exp Clin Cancer Res 34:46 (2015). Human . Read more (PubMed: 25971429) »
  • Cyr AR  et al. TFAP2C governs the luminal epithelial phenotype in mammary development and carcinogenesis. Oncogene N/A:N/A (2014). Human . Read more (PubMed: 24469049) »

See all 3 Publications for this product

Product Wall

The MUC1 antibody ab109185 should be capable of detecting all isoforms of human MUC1 that are listed in the UniProt entry for accession P15941, http://www.uniprot.org/uniprot/P15941, with the exception of isoforms 5, M6, ZD, and J13, which are missing ...

Read More


MUC1 has at least 10 isoforms with molecular weights around either 400 kDa or 20 kDa. ab109185 is designed to recognize a 25 kDa C-term cleaved fragment which is why the observed band is at ˜ 25 KDa.

Thank you for your enquiry and your interest in our products.

The immunogen used to raise this antibody was a synthetic peptide, corresponding to residues from the C-terminus of Human MUC1. The exact sequence is commercially sensitive informa...

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Thank you for your inquiry.

Unfortunately, we do not offer a MUC1 fulllength protein. The MUC1 protein (ab80082) is only a recombinant fragment and all others are peptides. I am sorry for the inconvenience but I cannot recommend any of these ...

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I can confirm that these two antibodies were not tested in sandwich ELISA yet. Unfortunately, we cannot give any discount. But there would be the possiblity to take part in our testing discount programm and to rec...

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Please note: All products are "FOR RESEARCH USE ONLY AND ARE NOT INTENDED FOR DIAGNOSTIC OR THERAPEUTIC USE"