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| Catalog # | Availability | Size | Quantity | Unit Price | Save For Later Wish List | |
|---|---|---|---|---|---|---|
| ABZ1157-100 | 2 weeks | 100 µL | $499.00 |
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| ABZ1157-20 | 2 weeks | 20 µL | $149.00 | |||
| ABZ1157-50 | 2 weeks | 50 µL | $325.00 |
Product Overview | |
| Name | [KO] OTUB1 Mouse mAb |
|---|---|
| Accession (Primary) | Q96FW1 |
| Host Species | Mouse |
| Isotype | IgG1 |
| Immunogen | |
| Full length human recombinant protein of human OTUB1 produced in 293T cell. | |
| Species Reactivity | |
| Reacts With | Rat |
| Calculated MW | |
| Calculated MW: 31 kDa; Observed MW: 36 kDa | |
| Buffer System | |
| Liquid in PBS containing 50% glycerol, 1% BSA and 0.02% sodium azide, pH 7.3. | |
| Storage | |
| Store at 4°C short term. Aliquot and store at -20°C long term. Avoid freeze/thaw cycles. | |
| Recommended Dilution | |
| WB: 1/500-1/1000; IHC: 1/50-1/100 | |
| Clonality No. | |
| 1E3 | |
| Purification | |
| Affinity Purified | |
| Conjugation | |
| Unconjugated | |
| Modification | |
| Unmodified | |
| Form | |
| Liquid | |
| Background | |
| Hydrolase that can specifically remove 'Lys-48'-linked 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 much lower preference compared to 'Lys-48'-linked ubiquitin.Plays a key non-catalytic role in DNA repair regulation by inhibiting activity of RNF168, an E3 ubiquitin-protein ligase that promotes accumulation of 'Lys-63'-linked histone H2A and H2AX at DNA damage sites. Inhibits RNF168 independently of ubiquitin thioesterase activity by binding and inhibiting UBE2N/UBC13, the E2 partner of RNF168, thereby limiting spreading of 'Lys-63'-linked histone H2A and H2AX marks. Inhibition occurs by binding to free ubiquitin: free ubiquitin acts as an allosteric regulator that increases affinity for UBE2N/UBC13 and disrupts interaction with UBE2V1. The OTUB1-UBE2N/UBC13-free ubiquitin complex adopts a configuration that mimics a cleaved 'Lys48'-linked di-ubiquitin chain.MiscellaneousIn the structure described by PubMed:18954305, the His-265 active site of the catalytic triad is located too far to interact directly with the active site Cys-91. A possible explanation is that OTUB1 is in inactive conformation in absence of ubiquitin and a conformation change may move His-265 in the proximity of Cys-91 in presence of ubiquitin substrate. | |
| Research Field | |
| Epigenetics and Nuclear Signaling | |
Target Information: ( Q96FW1 ) | |
| Name | OTUB1 |
| Other Names | |
| OTUB1; OTB1; OTU1; HSPC263; Ubiquitin thioesterase OTUB1; Deubiquitinating enzyme OTUB1; OTU domain-containing ubiquitin aldehyde-binding protein 1; Otubain-1; hOTU1; Ubiquitin-specific-processing protease OTUB1 | |
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