Rabbit Polyclonal E1 Ubiquitin Activating Enzyme 1/UBA1 antibody. Suitable for WB, IHC-P, ICC/IF and reacts with Human samples. Cited in 9 publications. Immunogen corresponding to Recombinant Full Length Protein corresponding to Human UBA1.
pH: 7.2
Preservative: 0.01% Sodium azide
Constituents: 0.88% Sodium chloride, 0.424% Potassium phosphate solution
WB | IHC-P | ICC/IF | |
---|---|---|---|
Human | Tested | Tested | Tested |
Mouse | Predicted | Predicted | Predicted |
Dog | Predicted | Predicted | Predicted |
Rabbit | Predicted | Predicted | Predicted |
Species | Dilution info | Notes |
---|---|---|
Species Human | Dilution info 1/1000 - 1/5000 | Notes - |
Species | Dilution info | Notes |
---|---|---|
Species Mouse, Rabbit, Dog | Dilution info - | Notes - |
Species | Dilution info | Notes |
---|---|---|
Species Human | Dilution info 2-20 µg/mL | Notes - |
Species | Dilution info | Notes |
---|---|---|
Species Mouse, Rabbit, Dog | Dilution info - | Notes - |
Species | Dilution info | Notes |
---|---|---|
Species Human | Dilution info 5 µg/mL | Notes - |
Species | Dilution info | Notes |
---|---|---|
Species Mouse, Rabbit, Dog | Dilution info - | Notes - |
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Catalyzes the first step in ubiquitin conjugation to mark cellular proteins for degradation through the ubiquitin-proteasome system (PubMed:1447181, PubMed:1606621, PubMed:33108101). Activates ubiquitin by first adenylating its C-terminal glycine residue with ATP, and thereafter linking this residue to the side chain of a cysteine residue in E1, yielding a ubiquitin-E1 thioester and free AMP (PubMed:1447181). Essential for the formation of radiation-induced foci, timely DNA repair and for response to replication stress. Promotes the recruitment of TP53BP1 and BRCA1 at DNA damage sites (PubMed:22456334).
A1S9T, UBE1, UBA1, Ubiquitin-like modifier-activating enzyme 1, Protein A1S9, Ubiquitin-activating enzyme E1
Rabbit Polyclonal E1 Ubiquitin Activating Enzyme 1/UBA1 antibody. Suitable for WB, IHC-P, ICC/IF and reacts with Human samples. Cited in 9 publications. Immunogen corresponding to Recombinant Full Length Protein corresponding to Human UBA1.
pH: 7.2
Preservative: 0.01% Sodium azide
Constituents: 0.88% Sodium chloride, 0.424% Potassium phosphate solution
A BLAST analysis was used to suggest that this antibody would react with Ubiquitin Activating Enzyme E1 protein from human (100%) rabbit (96%), mouse (95%), rat (95%) and dog (93%) based on a high degree of sequence homology. Cross reactivity against this protein from other sources has not been determined.
The product was purified from monospecific antiserum by a multi step procedure.
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The E1 Ubiquitin Activating Enzyme 1 also known as UBA1 performs the initial step in the ubiquitination process. This enzyme activates ubiquitin a small protein that tags other proteins for degradation by the proteasome. UBA1 binds to ubiquitin in an ATP-dependent manner facilitating its transfer to E2 ubiquitin-conjugating enzymes. UBA1 has a molecular mass of approximately 117 kDa and shows expression in various tissues particularly in actively dividing cells.
The enzyme plays an essential role in protein homeostasis by initiating the ubiquitin-proteasome system. UBA1 actively contributes to cellular regulation by targeting damaged or misfolded proteins for degradation thereby maintaining protein quality control. The enzyme is part of a complex alongside other proteins involved in the ubiquitination pathway which include E2 enzymes and E3 ubiquitin ligases that work together to achieve selective protein ubiquitination.
E1 Ubiquitin Activating Enzyme 1 functions centrally in the ubiquitin-proteasome pathway a major mechanism governing protein turnover. It cooperates with other enzymes such as E2 and E3 to form a cascade that ensures substrate specificity and timely degradation. The enzyme also connects to the NF-kB signaling pathway where it regulates the stability of inhibitor kB proteins influencing immune responses and inflammation processes.
Mutations or dysregulation of UBA1 contribute to spinal muscular atrophy (SMA) and X-linked spinal muscular atrophy (XL-SMA). These conditions involve motor neuron degeneration linked to the impaired ubiquitin-proteasome function. Additionally alterations in UBA1 activity can impact B-cell-activation through the NF-kB pathway possibly leading to autoimmune disorders. Understanding the interactions of UBA1 with associated proteins provides insight into potential therapeutic targets for treating these diseases.
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This species and application combination has not been tested, but we predict it will work based on strong homology. However, this combination is not covered by our product promise.
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All lanes: Western blot - Anti-E1 Ubiquitin Activating Enzyme 1/UBA1 antibody (ab34711) at 1 µg/mL
Lane 1: Human brain tissue lysate - total protein (ab29466) at 10 µg/mL
Lane 2: Human liver tissue lysate - total protein (ab29889) at 10 µg/mL
Lane 3: HeLa (Human epithelial carcinoma cell line) Whole Cell Lysate at 10 µg/mL
Lane 4: MCF7 (Human breast adenocarcinoma cell line) Whole Cell Lysate at 10 µg/mL
All lanes: Western blot - Goat Anti-Rabbit IgG H&L (HRP) preadsorbed (Goat Anti-Rabbit IgG H&L (HRP) preadsorbed ab97080) at 1/5000 dilution
Developed using the ECL technique.
Performed under reducing conditions.
Predicted band size: 118 kDa
Observed band size: 118 kDa, 35 kDa, 53 kDa
Exposure time: 1min
This image shows human lung tissue stained with ab34711 at 10μg/ml. In many cells apunctate nuclear staining was observed. Other cells showed both cytoplasmic and nuclear staining.
ICC/IF image of ab34711 stained MCF7 cells. The cells were 100% methanol fixed (5 min) and then incubated in 1%BSA / 10% normal goat serum / 0.3M glycine in 0.1% PBS-Tween for 1h to permeabilise the cells and block non-specific protein-protein interactions. The cells were then incubated with the antibody (ab34711, 5µg/ml) overnight at +4°C. The secondary antibody (green) was Alexa Fluor® 488 goat anti-rabbit IgG (H+L) used at a 1/1000 dilution for 1h. Alexa Fluor® 594 WGA was used to label plasma membranes (red) at a 1/200 dilution for 1h. DAPI was used to stain the cell nuclei (blue) at a concentration of 1.43µM.
ab34711 (4µg/ml) staining E1 Ubiquitin activating enzyme in human testis using an automated system (DAKO Autostainer Plus). Using this protocol there is nuclear and weak cytoplasmic staining.
Sections were rehydrated and antigen retrieved with the Dako 3 in 1 AR buffer EDTA pH 9.0 in a DAKO PT link. Slides were peroxidase blocked in 3% H2O2 in methanol for 10 mins. They were then blocked with Dako Protein block for 10 minutes (containing casein 0.25% in PBS) then incubated with primary antibody for 20 min and detected with Dako envision flex amplification kit for 30 minutes. Colorimetric detection was completed with Diaminobenzidine for 5 minutes. Slides were counterstained with Haematoxylin and coverslipped under DePeX. Please note that, for manual staining, optimization of primary antibody concentration and incubation time is recommended. Signal amplification may be required.
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