Recombinant Anti-Smad3 antibody [EP568Y] (ab40854)
Key features and details
- Produced recombinantly (animal-free) for high batch-to-batch consistency and long term security of supply
- Rabbit monoclonal [EP568Y] to Smad3
- Suitable for: Flow Cyt (Intra), WB, IHC-P, Sandwich ELISA, ICC/IF
- Knockout validated
- Reacts with: Rat, Human
Related conjugates and formulations
Overview
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Product name
Anti-Smad3 antibody [EP568Y]
See all Smad3 primary antibodies -
Description
Rabbit monoclonal [EP568Y] to Smad3 -
Host species
Rabbit -
Tested applications
Suitable for: Flow Cyt (Intra), WB, IHC-P, Sandwich ELISA, ICC/IFmore details
Unsuitable for: IP -
Species reactivity
Reacts with: Rat, Human
Predicted to work with: Mouse, Chicken, Pig -
Immunogen
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Positive control
- WB: A549, HeLa, Human Kidney, HT-29, HT-1080 and Jurkat whole cell lysates; Rat liver tissue lysate. IHC-P: Human prostate carcinoma, breast carcinoma, colonic adenocarcinoma, lung adenocarcinoma, gastric adenocarcinoma, glioma and liver tissues. ICC/IF: HepG2 cells. Flow Cyt (intra): HCT116 and HT-29 cells.
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General notes
This product is a recombinant monoclonal antibody, which offers several advantages including:
- - High batch-to-batch consistency and reproducibility
- - Improved sensitivity and specificity
- - Long-term security of supply
- - Animal-free production
Our RabMAb® technology is a patented hybridoma-based technology for making rabbit monoclonal antibodies. For details on our patents, please refer to RabMAb® patents.
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.
Properties
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Form
Liquid -
Storage instructions
Shipped at 4°C. Store at +4°C short term (1-2 weeks). Upon delivery aliquot. Store at -20°C. Avoid freeze / thaw cycle. -
Storage buffer
pH: 7.20
Preservative: 0.01% Sodium azide
Constituents: 40% Glycerol, 0.05% BSA, 59% PBS -
Concentration information loading...
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Purity
Protein A purified -
Clonality
Monoclonal -
Clone number
EP568Y -
Isotype
IgG -
Research areas
Associated products
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Alternative Versions
- Anti-Smad3 antibody [EP568Y] - BSA and Azide free (ab157372)
- Alexa Fluor® 488 Anti-Smad3 antibody [EP568Y] (ab204257)
- Alexa Fluor® 647 Anti-Smad3 antibody [EP568Y] (ab204461)
- HRP Anti-Smad3 antibody [EP568Y] (ab204462)
- Alexa Fluor® 594 Anti-Smad3 antibody [EP568Y] (ab206350)
- Alexa Fluor® 555 Anti-Smad3 antibody [EP568Y] (ab206582)
- PE Anti-Smad3 antibody [EP568Y] (ab208751)
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Compatible Secondaries
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Conjugation kits
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Isotype control
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KO cell lines
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KO cell lysates
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Positive Controls
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Recombinant Protein
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Related Products
Applications
The Abpromise guarantee
Our Abpromise guarantee covers the use of ab40854 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 |
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Flow Cyt (Intra) |
1/50 - 1/210.
ab172730 - Rabbit monoclonal IgG, is suitable for use as an isotype control with this antibody. |
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WB | (7) |
1/1000 - 1/10000. Detects a band of approximately 55 kDa (predicted molecular weight: 48 kDa).
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IHC-P | (1) |
1/500 - 1/2000. Perform heat mediated antigen retrieval with Tris/EDTA buffer pH 9.0 before commencing with IHC staining protocol.
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Sandwich ELISA |
Use a concentration of 0.5 µg/ml.
For sandwich ELISA, use this antibody as Detection at 0.5 µg/ml with Mouse monoclonal [AF9F7] to Smad3 (ab75512) as Capture. |
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ICC/IF | (1) |
1/500 - 1/2000.
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Notes |
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Flow Cyt (Intra)
1/50 - 1/210. ab172730 - Rabbit monoclonal IgG, is suitable for use as an isotype control with this antibody. |
WB
1/1000 - 1/10000. Detects a band of approximately 55 kDa (predicted molecular weight: 48 kDa). |
IHC-P
1/500 - 1/2000. Perform heat mediated antigen retrieval with Tris/EDTA buffer pH 9.0 before commencing with IHC staining protocol. |
Sandwich ELISA
Use a concentration of 0.5 µg/ml. For sandwich ELISA, use this antibody as Detection at 0.5 µg/ml with Mouse monoclonal [AF9F7] to Smad3 (ab75512) as Capture. |
ICC/IF
1/500 - 1/2000. |
Target
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Function
Receptor-regulated SMAD (R-SMAD) that is an intracellular signal transducer and transcriptional modulator activated by TGF-beta (transforming growth factor) and activin type 1 receptor kinases. Binds the TRE element in the promoter region of many genes that are regulated by TGF-beta and, on formation of the SMAD3/SMAD4 complex, activates transcription. Also can form a SMAD3/SMAD4/JUN/FOS complex at the AP-1/SMAD site to regulate TGF-beta-mediated transcription. Has an inhibitory effect on wound healing probably by modulating both growth and migration of primary keratinocytes and by altering the TGF-mediated chemotaxis of monocytes. This effect on wound healing appears to be hormone-sensitive. Regulator of chondrogenesis and osteogenesis and inhibits early healing of bone fractures. Positively regulates PDPK1 kinase activity by stimulating its dissociation from the 14-3-3 protein YWHAQ which acts as a negative regulator. -
Involvement in disease
Colorectal cancer
Loeys-Dietz syndrome 3 -
Sequence similarities
Belongs to the dwarfin/SMAD family.
Contains 1 MH1 (MAD homology 1) domain.
Contains 1 MH2 (MAD homology 2) domain. -
Domain
The MH1 domain is required for DNA binding. Also binds zinc ions which are necessary for the DNA binding.
The MH2 domain is required for both homomeric and heteromeric interactions and for transcriptional regulation. Sufficient for nuclear import.
The linker region is required for the TGFbeta-mediated transcriptional activity and acts synergistically with the MH2 domain. -
Post-translational
modificationsPhosphorylated on serine and threonine residues. Enhanced phosphorylation in the linker region on Thr-179, Ser-204 and Ser-208 on EGF and TGF-beta treatment. Ser-208 is the main site of MAPK-mediated phosphorylation. CDK-mediated phosphorylation occurs in a cell-cycle dependent manner and inhibits both the transcriptional activity and antiproliferative functions of SMAD3. This phosphorylation is inhibited by flavopiridol. Maximum phosphorylation at the G(1)/S junction. Also phosphorylated on serine residues in the C-terminal SXS motif by TGFBR1 and ACVR1. TGFBR1-mediated phosphorylation at these C-terminal sites is required for interaction with SMAD4, nuclear location and transactivational activity, and appears to be a prerequisite for the TGF-beta mediated phosphorylation in the linker region. Dephosphorylated in the C-terminal SXS motif by PPM1A. This dephosphorylation disrupts the interaction with SMAD4, promotes nuclear export and terminates TGF-beta-mediated signaling. Phosphorylation at Ser-418 by CSNK1G2/CK1 promotes ligand-dependent ubiquitination and subsequent proteasome degradation, thus inhibiting SMAD3-mediated TGF-beta responses. Phosphorylated by PDPK1.
Acetylation in the nucleus by EP300 in the MH2 domain regulates positively its transcriptional activity and is enhanced by TGF-beta.
Ubiquitinated. Monoubiquitinated, leading to prevent DNA-binding. Deubiquitination by USP15 alleviates inhibition and promotes activation of TGF-beta target genes.
Poly-ADP-ribosylated by PARP1 and PARP2. ADP-ribosylation negatively regulates SMAD3 transcriptional responses during the course of TGF-beta signaling. -
Cellular localization
Cytoplasm. Nucleus. Cytoplasmic and nuclear in the absence of TGF-beta. On TGF-beta stimulation, migrates to the nucleus when complexed with SMAD4 (PubMed:15799969). Through the action of the phosphatase PPM1A, released from the SMAD2/SMAD4 complex, and exported out of the nucleus by interaction with RANBP1 (PubMed:16751101, PubMed:19289081). Co-localizes with LEMD3 at the nucleus inner membrane (PubMed:15601644). MAPK-mediated phosphorylation appears to have no effect on nuclear import (PubMed:19218245). PDPK1 prevents its nuclear translocation in response to TGF-beta (PubMed:17327236). - Information by UniProt
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Database links
- Entrez Gene: 4088 Human
- Entrez Gene: 17127 Mouse
- Entrez Gene: 397260 Pig
- Entrez Gene: 25631 Rat
- Omim: 603109 Human
- SwissProt: P84023 Chicken
- SwissProt: P84022 Human
- SwissProt: Q8BUN5 Mouse
see all -
Alternative names
- DKFZP586N0721 antibody
- DKFZp686J10186 antibody
- hMAD 3 antibody
see all
Images
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All lanes : Anti-Smad3 antibody [EP568Y] (ab40854) at 1/1000 dilution
Lane 1 : Wild-type A549 (Human lung carcinoma cell line) whole cell lysate
Lane 2 : SMAD3 knockout A549 (Human lung carcinoma cell line) whole cell lysate
Lane 3 : HeLa (Human epithelial cell line from cervix adenocarcinoma) whole cell lysate
Lane 4 : Human Kidney cell lysate
Lysates/proteins at 20 µg per lane.
Performed under reducing conditions.
Predicted band size: 48 kDa
Observed band size: 50 kDa why is the actual band size different from the predicted?Lanes 1 - 4: Merged signal (red and green). Green - ab40854 observed at 48 kDa. Red - loading control, ab8245 (Mouse anti-GAPDH antibody [6C5]) observed at 37kDa.
ab40854 was shown to react with Smad3 in western blot. Membranes were blocked in 3% milk in TBS-T (0.1% Tween®) before incubation with ab40854 and ab8245 (Mouse anti-GAPDH antibody [6C5]) overnight at 4°C at a 1 in 1000 Dilution and a 1 in 20000 dilution respectively. Blots were incubated with Goat anti-Rabbit IgG H&L (IRDye® 800CW) preabsorbed (ab216773) and Goat anti-Mouse IgG H&L (IRDye® 680RD) preabsorbed (ab216776) secondary antibodies at 1 in 20000 dilution for 1 hour at room temperature before imaging.
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Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-Smad3 antibody [EP568Y] (ab40854)
Immunohistochemical analysis of paraffin-embedded human colonic adenocarcinoma tissue labelling Smad3 with unpurified ab40854.
Perform heat mediated antigen retrieval with Tris/EDTA buffer pH 9.0 before commencing with IHC staining protocol.
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Immunocytochemsitry/Immunofluorescence analysis of HepG2 cells labelling Smad3 (green) with purified ab40854 at 1/2000 . Cells were fixed with 4% paraformaldehyde. An Alexa Fluor® 488-conjugated goat anti-rabbit IgG (1/200) was used as the secondary antibody (green, left panel). Counterstained with DAPI (blue, right panel).
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Overlay histogram showing HCT116 cells stained with unpurifiedab40854 (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 (ab40854, 1/100 dilution) for 30 min at 22°C. The secondary antibody used was DyLight® 488 goat anti-rabbit IgG (H+L) (ab96899) at 1/500 dilution for 30 min at 22°C. Isotype control antibody (black line) was rabbit IgG (monoclonal) (1µg/1x106 cells) used under the same conditions. Acquisition of >5,000 events was performed.
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Standard Curve for Smad3 (Analyte: Smad3 protein (His tag) (ab89353, unpurified)); dilution range 1pg/ml to 1µg/ml using Capture Antibody Mouse monoclonal [AF9F7] to Smad3 (ab75512) at 5µg/ml and Detector Antibody Rabbit monoclonal [EP568Y] to Smad3 (ab40854) at 0.5µg/ml.
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Immunocytochemistry/ Immunofluorescence - Anti-Smad3 antibody [EP568Y] (ab40854)This image is courtesy of an Abreview submitted by Francesco Elia Marino
ab40854 staining Smad3 in human granulosa cells by ICC/IF (Immunocytochemistry/immunofluorescence). Cells were fixed with paraformaldehyde, permeabilized with ethanol and triton and blocked for 1 hour at 26°C. Samples were incubated with primary antibody (1/200) for 16 hours at 4°C. An undiluted IRDye® 800CW-conjugated goat anti-rabbit IgG (H+L) polyclonal was used as the secondary antibody. Left - negative control (4 replicates).
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All lanes : Anti-Smad3 antibody [EP568Y] (ab40854) at 1/5300 dilution (purified)
Lane 1 : HT-29 cell lysate
Lane 2 : HT-1080 cell lysate
Lysates/proteins at 10 µg per lane.
Secondary
All lanes : Peroxidase-conjugated goat anti-rabbit IgG (H+L) at 1/1000 dilution
Predicted band size: 48 kDa
Observed band size: 58 kDa why is the actual band size different from the predicted?Blocking buffer and concentration: 5% NFDM/TBST.
Diluting buffer and concentration: 5% NFDM /TBST.
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Anti-Smad3 antibody [EP568Y] (ab40854) at 1/5000 dilution (unpurified) + Jurkat cell lysate at 10 µg
Predicted band size: 48 kDa
Observed band size: 55 kDa why is the actual band size different from the predicted? -
Anti-Smad3 antibody [EP568Y] (ab40854) at 1/5300 dilution (purified) + Rat liver tissue lysate at 10 µg
Secondary
Peroxidase-conjugated goat anti-rabbit IgG (H+L) at 1/1000 dilution
Predicted band size: 48 kDa
Observed band size: 58 kDa why is the actual band size different from the predicted?Blocking buffer and concentration: 5% NFDM/TBST.
Diluting buffer and concentration: 5% NFDM /TBST.
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Intracellular Flow Cytometry analysis of HT-29 cells labelling Smad3 with purified ab40854 at 1/210 (red). Cells were fixed with 2% paraformaldehyde. A FITC-conjugated goat anti-rabbit IgG (1/150) was used as the secondary antibody. Green - Isotype control, rabbit monoclonal IgG.
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Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-Smad3 antibody [EP568Y] (ab40854)
Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) analysis of human liver tissue labelling Smad3 with purified ab40854 at 1/2000. Heat mediated antigen retrieval was performed using Tris/EDTA buffer pH 9. A prediluted HRP-polymer conjugated anti-rabbit IgG was used as the secondary antibody. Counterstained with Hematoxylin.
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Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-Smad3 antibody [EP568Y] (ab40854)
Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) analysis of human prostate carcinoma tissue labelling unpurified ab40854 at 1/100 dilution.
Perform heat mediated antigen retrieval with Tris/EDTA buffer pH 9.0 before commencing with IHC staining protocol.
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Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-Smad3 antibody [EP568Y] (ab40854)
Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) analysis of human breast carcinoma tissue labelling unpurified ab40854.
Perform heat mediated antigen retrieval with Tris/EDTA buffer pH 9.0 before commencing with IHC staining protocol.
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Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-Smad3 antibody [EP568Y] (ab40854)
Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) analysis of human lung adenocarcinoma tissue labelling unpurified ab40854.
Perform heat mediated antigen retrieval with Tris/EDTA buffer pH 9.0 before commencing with IHC staining protocol.
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Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-Smad3 antibody [EP568Y] (ab40854)
Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) analysis of human glioma tissue labelling unpurified ab40854.
Perform heat mediated antigen retrieval with Tris/EDTA buffer pH 9.0 before commencing with IHC staining protocol.
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Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-Smad3 antibody [EP568Y] (ab40854)
Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) analysis of human gastric adenocarcinoma tissue labelling unpurified ab40854.
Perform heat mediated antigen retrieval with Tris/EDTA buffer pH 9.0 before commencing with IHC staining protocol.
Datasheets and documents
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SDS download
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Datasheet download
References (222)
ab40854 has been referenced in 222 publications.
- Ren C et al. SHCBP1 Promotes the Progression of Esophageal Squamous Cell Carcinoma Via the TGFß Pathway. Appl Immunohistochem Mol Morphol 29:136-143 (2021). PubMed: 32769441
- Wang H et al. Isolation and identification of goose skeletal muscle satellite cells and preliminary study on the function of C1q and tumor necrosis factor-related protein 3 gene. Anim Biosci 34:1078-1087 (2021). PubMed: 33152229
- Tamura Y et al. Anti-pyroptotic function of TGF-ß is suppressed by a synthetic dsRNA analogue in triple negative breast cancer cells. Mol Oncol 15:1289-1307 (2021). PubMed: 33342034
- Wei X et al. Ultrasound-targeted microbubble destruction-mediated Galectin-7-siRNA promotes the homing of bone marrow mesenchymal stem cells to alleviate acute myocardial infarction in rats. Int J Mol Med 47:677-687 (2021). PubMed: 33416139
- Gori I et al. Mutations in SKI in Shprintzen-Goldberg syndrome lead to attenuated TGF-ß responses through SKI stabilization. Elife 10:N/A (2021). PubMed: 33416497