Key features and details
- Produced recombinantly (animal-free) for high batch-to-batch consistency and long term security of supply
- Rabbit monoclonal [EPR6464] to CSN7b
- Suitable for: WB, IHC-P, Flow Cyt
- Knockout validated
- Reacts with: Mouse, Rat, Human
Product nameAnti-CSN7b antibody [EPR6464]
See all CSN7b primary antibodies
DescriptionRabbit monoclonal [EPR6464] to CSN7b
Tested applicationsSuitable for: WB, IHC-P, Flow Cytmore details
Unsuitable for: IP
Species reactivityReacts with: Mouse, Rat, Human
Synthetic peptide within Human CSN7b aa 50-150. The exact sequence is proprietary.
- WB: HEK293T, HAP1, Jurkat and HeLa cell lysates. IHC-P: Human kidney tissue.
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.
Storage instructionsShipped at 4°C. Store at -20°C. Stable for 12 months at -20°C.
Dissociation constant (KD)KD = 1.12 x 10 -10 M Learn more about KD
Storage bufferpH: 7.40
Preservative: 0.05% Sodium azide
Constituents: 40% Glycerol, 9.85% Tris glycine, 50% Tissue culture supernatant
Concentration information loading...
PurityTissue culture supernatant
KO cell lines
KO cell lysates
Our Abpromise guarantee covers the use of ab133548 in the following tested applications.
The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.
|WB||1/10000 - 1/50000. Detects a band of approximately 30 kDa (predicted molecular weight: 30 kDa).|
|IHC-P||1/250 - 1/500. Perform heat mediated antigen retrieval before commencing with IHC staining protocol.|
FunctionComponent of the COP9 signalosome complex (CSN), a complex involved in various cellular and developmental processes. The CSN complex is an essential regulator of the ubiquitin (Ubl) conjugation pathway by mediating the deneddylation of the cullin subunits of SCF-type E3 ligase complexes, leading to decrease the Ubl ligase activity of SCF-type complexes such as SCF, CSA or DDB2. The complex is also involved in phosphorylation of p53/TP53, JUN, I-kappa-B-alpha/NFKBIA, ITPK1 and IRF8/ICSBP, possibly via its association with CK2 and PKD kinases. CSN-dependent phosphorylation of TP53 and JUN promotes and protects degradation by the Ubl system, respectively.
Sequence similaritiesBelongs to the CSN7/EIF3M family. CSN7 subfamily.
Contains 1 PCI domain.
Cellular localizationCytoplasm. Nucleus.
- Information by UniProt
- COP9 Complex Homolog Subunit 7b antibody
- COP9 Constitutive Photomorphogenic Homolog Subunit 7b antibody
- COP9 Signalasome Subunit 7b antibody
All lanes : Anti-CSN7b antibody [EPR6464] (ab133548) at 1/1000 dilution
Lane 1 : Wild-type HEK293T cell lysate
Lane 2 : COPS7B knockout HEK293T cell lysate
Lane 3 : HeLa cell lysate
Lane 4 : HAP1 cell lysate
Lysates/proteins at 20 µg per lane.
All lanes : Goat anti-Rabbit IgG H&L (IRDye® 800CW) preadsorbed (ab216773) at 1/10000 dilution
Predicted band size: 30 kDa
Observed band size: 32 kDa why is the actual band size different from the predicted?
Lanes 1-4: Merged signal (red and green). Green - ab133548 observed at 32 kDa. Red - loading control ab8245 observed at 36 kDa.
ab133548 Anti-CSN7b antibody [EPR6464] was shown to specifically react with CSN7b in wild-type HEK293T cells. Loss of signal was observed when knockout cell line ab266646 (knockout cell lysate ab257895) was used. Wild-type and CSN7b knockout samples were subjected to SDS-PAGE. ab133548 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.
Lane 1: Wild-type HAP1 cell lysate (20 µg)
Lane 2: CSN7b knockout HAP1 cell lysate (20 µg)
Lane 3: HeLa cell lysate (20 µg)
Lanes 1 - 3: Merged signal (red and green). Green - ab133548 observed at 32 kDa. Red - loading control, ab18058, observed at 124 kDa.
ab133548 was shown to specifically react with CSN7b when CSN7b knockout samples were used. Wild-type and CSN7b knockout samples were subjected to SDS-PAGE. ab133548 and ab18058 (loading control to vinculin) were both diluted 1/10000 and incubated overnight at 4°C. 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 1/10000 dilution for 1 hour at room temperature before imaging.
Flow Cytometry analysis of HeLa (human cervix adenocarcinoma) cells labeling CSN7b with unpurified ab133548 at 1/200 dilution (10ug/ml) (red). Cells were fixed with 4% paraformaldehyde and permeabilised with 90% methanol. A Goat anti-rabbit IgG (Alexa Fluor® 488)(1/2000 dilution) was used as the secondary antibody. Rabbit monoclonal IgG (Black) was used as the isotype control, cells without incubation with primary antibody and secondary antibody (Blue) were used as the unlabeled control.
Immunohistochemical analysis of paraffin embedded Human kidney tissue labelling CSN7b with ab133548 antibody at a dilution of 1/250.
Perform heat mediated antigen retrieval before commencing with IHC staining protocol.
All lanes : Anti-CSN7b antibody [EPR6464] (ab133548) at 1/10000 dilution
Lane 1 : Jurkat cell lysate
Lane 2 : HeLa cell lysate
Lysates/proteins at 10 µg per lane.
All lanes : HRP labelled goat anti-rabbit at 1/2000 dilution
Predicted band size: 30 kDa
Observed band size: 30 kDa
Equilibrium disassociation constant (KD)
Learn more about KD
Click here to learn more about KD
ab133548 has been referenced in 1 publication.
- Liu J et al. A genome-scale CRISPR-Cas9 screening in myeloma cells identifies regulators of immunomodulatory drug sensitivity. Leukemia N/A:N/A (2018). PubMed: 30026574