Human SMAD2 knockout HeLa cell line (ab255430)
Overview
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Product name
Human SMAD2 knockout HeLa cell line
See all Smad2 lysates -
Parental Cell Line
HeLa -
Organism
Human -
Mutation description
Knockout achieved by using CRISPR/Cas9, 1 bp deletion in exon 2 and 1 bp insertion in exon 2 -
Passage number
<20 -
Knockout validation
Sanger Sequencing, Western Blot (WB) -
Tested applications
Suitable for: WBmore details -
Biosafety level
2 -
General notes
Recommended control: Human wild-type HeLa cell line (ab255928). Please note a wild-type cell line is not automatically included with a knockout cell line order, if required please add recommended wild-type cell line at no additional cost using the code WILDTYPE-TMTK1.
Cryopreservation cell medium: Cell Freezing Medium-DMSO Serum free media, contains 8.7% DMSO in MEM supplemented with methyl cellulose.
Culture medium: DMEM (High Glucose) + 10% FBS
Initial handling guidelines: Upon arrival, the vial should be stored in liquid nitrogen vapor phase and not at -80°C. Storage at -80°C may result in loss of viability.
1. Thaw the vial in 37°C water bath for approximately 1-2 minutes.
2. Transfer the cell suspension (0.8 mL) to a 15 mL/50 mL conical sterile polypropylene centrifuge tube containing 8.4 mL pre-warmed culture medium, wash vial with an additional 0.8 mL culture medium (total volume 10 mL) to collect remaining cells, and centrifuge at 201 x g (rcf) for 5 minutes at room temperature. 10 mL represents minimum recommended dilution. 20 mL represents maximum recommended dilution.
3. Resuspend the cell pellet in 5 mL pre-warmed culture medium and count using a haemocytometer or alternative cell counting method. Based on cell count, seed cells in an appropriate cell culture flask at a density of 2x104 cells/cm2. Seeding density is given as a guide only and should be scaled to align with individual lab schedules.
4. Incubate the culture at 37°C incubator with 5% CO2. Cultures should be monitored daily.Subculture guidelines:
- All seeding densities should be based on cell counts gained by established methods.
- A guide seeding density of 2x104 cells/cm2 is recommended.
- A partial media change 24 hours prior to subculture may be helpful to encourage growth, if required.
- Cells should be passaged when they have achieved 80-90% confluence.
This product is subject to limited use licenses from The Broad Institute, ERS Genomics Limited and Sigma-Aldrich Co. LLC, and is developed with patented technology. For full details of the licenses and patents please refer to our limited use license and patent pages.
We will provide viable cells that proliferate on revival.
Properties
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Number of cells
1 x 106 cells/vial, 1 mL -
Adherent /Suspension
Adherent -
Tissue
Cervix -
Cell type
epithelial -
Disease
Adenocarcinoma -
Gender
Female -
STR Analysis
Amelogenin X D5S818: 11, 12 D13S317: 12, 13.3 D7S820: 8, 12 D16S539: 9, 10 vWA: 16, 18 TH01: 7 TPOX: 8,12 CSF1PO: 9, 10 -
Mycoplasma free
Yes -
Storage instructions
Shipped on Dry Ice. Store in liquid nitrogen. -
Storage buffer
Constituents: 8.7% Dimethylsulfoxide, 2% Cellulose, methyl ether -
Research areas
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 SMAD2/SMAD4 complex, activates transcription. May act as a tumor suppressor in colorectal carcinoma. -
Tissue specificity
Expressed at high levels in skeletal muscle, heart and placenta. -
Sequence similarities
Belongs to the dwarfin/SMAD family.
Contains 1 MH1 (MAD homology 1) domain.
Contains 1 MH2 (MAD homology 2) domain. -
Post-translational
modificationsPhosphorylated on one or several of Thr-220, Ser-245, Ser-250, and Ser-255. In response to TGF-beta, phosphorylated on Ser-465/467 by TGF-beta and activin type 1 receptor kinases. Able to interact with SMURF2 when phosphorylated on Ser-465/467, recruiting other proteins, such as SNON, for degradation. In response to decorin, the naturally occurring inhibitor of TGF-beta signaling, phosphorylated on Ser-240 by CaMK2. Phosphorylated by MAPK3 upon EGF stimulation; which increases transcriptional activity and stability, and is blocked by calmodulin.
In response to TGF-beta, ubiquitinated by NEDD4L; which promotes its degradation.
Acetylated on Lys-19 by coactivators in response to TGF-beta signaling, which increases transcriptional activity. Isoform short: Acetylation increases DNA binding activity in vitro and enhances its association with target promoters in vivo. Acetylation in the nucleus by EP300 is enhanced by TGF-beta. -
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. On dephosphorylation by phosphatase PPM1A, released from the SMAD2/SMAD4 complex, and exported out of the nucleus by interaction with RANBP1. - Information by UniProt
Associated products
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KO cell lysates
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Related Products
- Anti-Smad2 antibody [EP784Y] - BSA and Azide free (ab157371)
- Anti-Smad2 antibody [EP567Y] - BSA and Azide free (ab216454)
- Anti-Smad2 (phospho S467) antibody [EPR23681-40] (ab280888)
- Anti-Smad2 (phospho S467) antibody [EPR23681-40] - BSA and Azide free (ab280897)
- Anti-Smad2 antibody [EP567Y] (ab33875)
- Anti-Smad2 antibody [EP784Y] (ab40855)
Applications
The Abpromise guarantee
Our Abpromise guarantee covers the use of ab255430 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 |
|---|---|---|
| WB |
Use at an assay dependent concentration. Predicted molecular weight: 52 kDa.
|
| Notes |
|---|
|
WB
Use at an assay dependent concentration. Predicted molecular weight: 52 kDa. |
Images
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Western blot - Human SMAD2 knockout HeLa cell line (ab255430)All lanes : Anti-Smad2 (phospho S467) antibody [EPR23681-40] (ab280888) at 1/1000 dilution
Lane 1 : Wild-type HeLa (human cervix adenocarcinoma epithelial cell), whole cell lysate
Lane 2 : Wild-type HeLa (human cervix adenocarcinoma epithelial cell) treated with 20 ng/ml TGF beta1 for 15 minutes, whole cell lysate
Lane 3 : Smad2 knockout HeLa (human cervix adenocarcinoma epithelial cell), whole cell lysate
Lane 4 : Smad2 knockout HeLa (human cervix adenocarcinoma epithelial cell), treated with 20 ng/ml TGF beta1 for 15 minutes, whole cell lysate
Lysates/proteins at 20 µg per lane.
Secondary
All lanes : Goat Anti-Rabbit IgG H&L (IRDye® 800CW) (ab216773) and Goat Anti-Mouse IgG H&L (IRDye® 680RD) (ab216776) at 1/20000 dilution
Predicted band size: 52 kDa
Observed band size: 60 kDa why is the actual band size different from the predicted?Blocking and diluting buffer and concentration: Intercept® (TBS) Blocking Buffer diluted with an equal volume of 0.1% TBS
Lanes 1-4: Merged signal (red and green). Green - ab280888 observed at 60 kDa. Red - loading control ab8245 (Mouse monoclonal [6C5] to GAPDH) observed at 36 kDa.
ab280888 Anti-Smad2 (phospho S467) antibody [EPR23681-40] was shown to specifically react with Smad2 in wild-type HeLa cells. Loss of signal was observed when knockout cell line ab255430 (knockout cell lysate ab263833) was used. Wild-type and Smad2 knockout samples were subjected to SDS-PAGE.
ab280888 and Anti-GAPDH antibody [6C5] - Loading Control (ab8245) were incubated at 4? overnight at 1 in 1000 dilution and 1 in 20000 dilution respectively. Blots were developed with Goat anti-Rabbit IgG H&L (IRDye® 800CW) preadsorbed (ab216773) and Goat anti-Mouse IgG H&L (IRDye® 680RD) preadsorbed (ab216776) secondary antibodies at 1 in 10000 dilution for 1 hour at room temperature before imaging.
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Western blot - Human SMAD2 knockout HeLa cell line (ab255430)All lanes : Anti-Smad2 antibody [EP784Y] (ab40855) at 1/2000 dilution
Lane 1 : A549 cell lysate
Lane 2 : Jurkat cell lysate
Lane 3 : Wild-type HeLa cell lysate
Lane 4 : SMAD2 knockout HeLa cell lysate
Lysates/proteins at 20 µg per lane.
Secondary
All lanes : Goat anti-Rabbit IgG H&L (IRDye® 800CW) preadsorbed (ab216773) at 1/20000 dilution
Predicted band size: 52 kDa
Additional bands at: 37 kDa (possible Loading Control)Lanes 1 - 4: Merged signal (red and green). Green - ab40855 observed at 58 kDa. Red - loading control, ab8245 observed at 37 kDa.
ab40855 was shown to react with Smad2 in wild-type HeLa. Loss of signal was observed when knockout cell line ab255430 (knockout cell lysate ab263833) was used. Wild-type and Smad2 knockout samples were subjected to SDS-PAGE. ab40855 and Anti-GAPDH antibody [6C5] - Loading Control (ab8245) were incubated overnight at 4°C at 1 in 2000 dilution and 1 in 20000 dilution respectively. Blots were developed with Goat anti-Rabbit IgG H&L (IRDye® 800CW) preadsorbed (ab216773) and Goat anti-Mouse IgG H&L (IRDye® 680RD) preadsorbed (ab216776) secondary antibodies at 1 in 20000 dilution for 1 hour at room temperature before imaging.
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Western blot - Human SMAD2 knockout HeLa cell line (ab255430)All lanes : Anti-Smad2 antibody [EP567Y] (ab33875) at 1/1000 dilution
Lane 1 : Wild-type A549 cell lysate
Lane 2 : Jurkat cell lysate
Lane 3 : Wild-type HeLa cell lysate
Lane 4 : SMAD2 knockout HeLa cell lysate
Lysates/proteins at 20 µg per lane.
Secondary
All lanes : Goat anti-Rabbit IgG H&L (IRDye® 800CW) preadsorbed (ab216773) at 1/20000 dilution
Performed under reducing conditions.
Predicted band size: 52 kDa
Additional bands at: 37 kDa (possible Loading Control)Lanes 1 - 4: Merged signal (red and green). Green - ab33875 observed at 58 kDa. Red - loading control, ab8245 observed at 37 kDa.
ab33875 was shown to react with Smad2 in wild-type HeLa. Loss of signal was observed when knockout cell line ab255430 (knockout cell lysate ab263833) was used. Wild-type and Smad2 knockout samples were subjected to SDS-PAGE. ab33875 and Anti-GAPDH antibody [6C5] - Loading Control (ab8245) were incubated overnight at 4°C at 1 in 1000 dilution and 1 in 20000 dilution respectively. Blots were developed with Goat anti-Rabbit IgG H&L (IRDye® 800CW) preadsorbed (ab216773) and Goat anti-Mouse IgG H&L (IRDye® 680RD) preadsorbed (ab216776) secondary antibodies at 1 in 20000 dilution for 1 hour at room temperature before imaging.
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Sanger Sequencing - Human SMAD2 knockout HeLa cell line (ab255430)Allele-1: 1 bp deletion in exon 2.
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Sanger Sequencing - Human SMAD2 knockout HeLa cell line (ab255430)Allele-2: 1 bp insertion in exon 2.
Protocols
Datasheets and documents
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SDS download
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Datasheet download
References (0)
ab255430 has not yet been referenced specifically in any publications.