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  1. Link

    products/cell-lines/human-otub1-knockout-hek-293t-cell-line-ab266551.pdf

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Epigenetics and Nuclear Signaling DNA / RNA DNA Damage & Repair Homologous Recomb.
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Human OTUB1 knockout HEK-293T cell line (ab266551)

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Western blot - Human OTUB1 knockout HEK-293T cell line (ab266551)
  • Immunocytochemistry - Human OTUB1 knockout HEK-293T cell line (ab266551)
  • Western blot - Human OTUB1 knockout HEK293T cell line (ab266551)
  • Western blot - Human OTUB1 knockout HEK293T cell line (ab266551)
  • Sanger Sequencing - Human OTUB1 knockout HEK293T cell line (ab266551)
  • Sanger Sequencing - Human OTUB1 knockout HEK293T cell line (ab266551)
  • Cell Culture - Human OTUB1 knockout HEK293T cell line (ab266551)

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Anti-OTUB1 antibody (ab101471)
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Anti-OTUB1 antibody [EPR13028(B)] (ab175200)
Knockout
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Human DNAJA1 knockout HEK-293T cell line (ab266437)

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Overview

  • Product name

    Human OTUB1 knockout HEK-293T cell line
  • Parental Cell Line

    HEK293T
  • Organism

    Human
  • Mutation description

    Knockout achieved by using CRISPR/Cas9, 19 bp deletion in exon 1 and Insertion of the selection cassette in exon 1
  • Passage number

    <20
  • Knockout validation

    Immunocytochemistry (ICC), Sanger Sequencing, Western Blot (WB)
  • Tested applications

    Suitable for: WB, ICCmore details
  • Biosafety level

    2
  • General notes

    Recommended control: Human wild-type HEK293T cell line (ab255449). 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.

Properties

  • Number of cells

    1 x 106 cells/vial, 1 mL
  • Viability

    ~80%
  • Adherent /Suspension

    Adherent
  • Tissue

    Kidney
  • Cell type

    epithelial
  • STR Analysis

    Amelogenin X D5S818: 8, 9 D13S317: 12, 14 D7S820: 11 D16S539: 9, 13 vWA: 16, 19 TH01: 7, 9.3 TPOX: 11 CSF1PO: 11, 12
  • 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

    • Epigenetics and Nuclear Signaling
    • DNA / RNA
    • DNA Damage & Repair
    • Homologous Recomb.
    • Cell Biology
    • Proteolysis / Ubiquitin
    • Proteasome / Ubiquitin
    • Deubiquitination
    • Cell Biology
    • Proteolysis / Ubiquitin
    • Proteolytic enzymes
    • Other proteases
    • Epigenetics and Nuclear Signaling
    • Ubiquitin & Ubiquitin Like Modifiers
    • Deubiquitination

Target

  • Function

    Hydrolase that can remove conjugated ubiquitin from proteins and plays an important regulatory role at the level of protein turnover by preventing degradation. Regulator of T-cell anergy, a phenomenon that occurs when T-cells are rendered unresponsive to antigen rechallenge and no longer respond to their cognate antigen. Acts via its interaction with RNF128/GRAIL, a crucial inductor of CD4 T-cell anergy. Isoform 1 destabilizes RNF128, leading to prevent anergy. In contrast, isoform 2 stabilizes RNF128 and promotes anergy. Surprisingly, it regulates RNF128-mediated ubiquitination, but does not deubiquitinate polyubiquitinated RNF128. Deubiquitinates estrogen receptor alpha (ESR1). Mediates deubiquitination of 'Lys-48'-linked polyubiquitin chains, but not 'Lys-63'-linked polyubiquitin chains. Not able to cleave di-ubiquitin. Also capable of removing NEDD8 from NEDD8 conjugates, but with a nuch lower preference compared to 'Lys-48'-linked ubiquitin.
  • Tissue specificity

    Isoform 1 is ubiquitous. Isoform 2 is expressed only in lymphoid tissues such as tonsils, lymph nodes and spleen, as well as peripheral blood mononuclear cells.
  • Sequence similarities

    Belongs to the peptidase C65 family.
    Contains 1 OTU domain.
  • Domain

    In addition to ubiquitin-binding at the Cys-91 active site, a proximal ubiquitin-binding site is also present at Cys-23 Occupancy of the active site is needed to enable tight binding to the second site. Distinct binding sites for the ubiquitins may allow to discriminate among different isopeptide linkages (i.e. 'Lys-48'-, 'Lys-63'-linked polyubiquitin) in polyubiquitin substrates and achieve linkage-specific deubiquitination.
  • Cellular localization

    Cytoplasm.
  • Target information above from: UniProt accession Q96FW1 The UniProt Consortium
    The Universal Protein Resource (UniProt) in 2010
    Nucleic Acids Res. 38:D142-D148 (2010) .

    Information by UniProt

Associated products

  • KO cell lysates

    • Human OTUB1 knockout HEK-293T cell lysate (ab257569)
  • Related Products

    • Anti-OTUB1 antibody (ab101471)
    • Anti-OTUB1 antibody [EPR13028(B)] (ab175200)
    • Anti-OTUB1 antibody [EPR13028(B)] - BSA and Azide free (ab232581)

Applications

The Abpromise guarantee

Our Abpromise guarantee covers the use of ab266551 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: 31 kDa.
ICC
Use at an assay dependent concentration.
Notes
WB
Use at an assay dependent concentration. Predicted molecular weight: 31 kDa.
ICC
Use at an assay dependent concentration.

Images

  • Western blot - Human OTUB1 knockout HEK-293T cell line (ab266551)
    Western blot - Human OTUB1 knockout HEK-293T cell line (ab266551)
    All lanes : Anti-OTUB1 antibody [EPR24917-75] (ab270959) at 1/1000 dilution

    Lane 1 : Wild-type HEK293T (human embryonic kidney epithelial cell) whole cell lysate
    Lane 2 : OTUB1 knockout HEK293T (ab266551) whole cell lysate
    Lane 3 : HeLa (human cervix adenocarcinoma epithelial cell) 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 1/10000 dilution

    Predicted band size: 31 kDa



    Blocking and diluting buffer and concentration: 5% NFDM/TBST

    Lanes 1-3: Merged signal (red and green). Green -ab270959 observed at 31kDa. Red - loading control ab8245 observed at 36 kDa. ab270959 Anti-OTUB1 antibody [EPR24917-75] was shown to specifically react with OTUB1 in wild-type HEK293T cells. Loss of signal was observed when knockout cell line ab266551 (knockout cell lysate ab257569) was used. Wild-type and OTUB1 knockout samples were subjected to SDS-PAGE.

    ab270959 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 10000 dilution for 1 hour at room temperature before imaging.

  • Immunocytochemistry - Human OTUB1 knockout HEK-293T cell line (ab266551)
    Immunocytochemistry - Human OTUB1 knockout HEK-293T cell line (ab266551)

    Immunofluorescent analysis of 4% Paraformaldehyde-fixed, 0.1% TritonX-100 permeabilized OTUB1 KO HEK293T (ab266551) cells labelling OTUB1 with ab270959 at 1/250 (2.204 ug/ml) dilution, followed by ab150081 Goat Anti-Rabbit IgG H&L (Alexa Fluor® 488) preadsorbed antibody at 1/1000 2 ug/ml dilution (Green). Confocal image showing no staining in OTUB1 KO HEK293T cell line and nuclear and cytoplasmic staining in Parental HEK293T. is observed. ab195889 Anti-alpha Tubulin mouse monoclonal antibody - Microtubule Marker (Alexa Fluor® 594) was used to counterstain tubulin at 1/200 2.5ug/ml dilution (Red). The Nuclear counterstain was DAPI (Blue).

    Secondary antibody only control: Secondary antibody is ab150081 Goat Anti-Rabbit IgG H&L (Alexa Fluor® 488) preadsorbed at 1/1000 2 ug/ml dilution.

  • Western blot - Human OTUB1 knockout HEK293T cell line (ab266551)
    Western blot - Human OTUB1 knockout HEK293T cell line (ab266551)
    All lanes : Anti-OTUB1 antibody [EPR13028(B)] (ab175200) at 1/1000 dilution

    Lane 1 : Wild-type HEK-293T cell lysate
    Lane 2 : OTUB1 knockout HEK-293T cell lysate

    Lysates/proteins at 20 µg per lane.

    Performed under reducing conditions.

    Predicted band size: 31 kDa
    Observed band size: 31 kDa



    Lanes 1-2: Merged signal (red and green). Green - ab175200 observed at 31 kDa. Red - loading control ab8245 observed at 37 kDa.

     ab175200 Anti-OTUB1 antibody [EPR13028(B)] was shown to specifically react with OTUB1 in wild-type HEK-293T cells. Loss of signal was observed when knockout cell line ab266551 (knockout cell lysate ab257569) was used. Wild-type and OTUB1 knockout samples were subjected to SDS-PAGE. ab175200 and Anti-GAPDH antibody [6C5] - Loading Control (ab8245) were incubated overnight at 4°CC 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.

     

  • Western blot - Human OTUB1 knockout HEK293T cell line (ab266551)
    Western blot - Human OTUB1 knockout HEK293T cell line (ab266551)
    All lanes : Anti-OTUB1 antibody (ab101471) at 1/10000 dilution

    Lane 1 : Wild-type HEK-293T cell lysate
    Lane 2 : OTUB1 knockout HEK-293T cell lysate

    Lysates/proteins at 20 µg per lane.

    Performed under reducing conditions.

    Predicted band size: 31 kDa
    Observed band size: 130 kDa why is the actual band size different from the predicted?



    Lanes 1-2: Merged signal (red and green). Green - ab101471 observed at 130 kDa. Red - loading control ab8245 observed at 37 kDa.

     ab101471 Anti-OTUB1 antibody was shown to specifically react with OTUB1 in wild-type HEK-293T cells. Loss of signal was observed when knockout cell line ab266551 (knockout cell lysate ab257569) was used. Wild-type and OTUB1 knockout samples were subjected to SDS-PAGE. ab101471 and Anti-GAPDH antibody [6C5] - Loading Control (ab8245) were incubated overnight at 4°C at 1 in 10000 ug/ml 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.

     

     

  • Sanger Sequencing - Human OTUB1 knockout HEK293T cell line (ab266551)
    Sanger Sequencing - Human OTUB1 knockout HEK293T cell line (ab266551)

    Allele-1: 19 bp deletion in exon 1

     

  • Sanger Sequencing - Human OTUB1 knockout HEK293T cell line (ab266551)
    Sanger Sequencing - Human OTUB1 knockout HEK293T cell line (ab266551)

    Allele-2: Insertion of the selection cassette in exon 1.

     

  • Cell Culture - Human OTUB1 knockout HEK293T cell line (ab266551)
    Cell Culture - Human OTUB1 knockout HEK293T cell line (ab266551)

    Representative images of OTUB1 knockout HEK293T cells, low and high confluency examples (top left and right respectively) and wild-type HEK293T cells, low and high confluency (bottom left and right respectively) showing typical adherent, epithelial-like morphology. Images were captured at 10X magnification using a EVOS XL Core microscope.

     

     

Protocols

  • Hemocytometer protocol
  • Mammalian cell tissue culture techniques protocol

Click here to view the general protocols

Datasheets and documents

  • SDS download

  • Datasheet download

    Download

References (0)

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ab266551 has not yet been referenced specifically in any publications.

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