You have no items in your shopping cart.
You have no items in your shopping cart.
Catalog Number | orb1731582 |
---|---|
Category | Antibodies |
Description | 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. |
Species/Host | Rabbit |
Clonality | Monoclonal |
Tested applications | IP, WB |
Reactivity | Human, Mouse, Rat |
Isotype | Rabbit IgG |
Immunogen | A synthetic peptide of human OTUB1 |
Concentration | 1mg/ml |
Dilution range | IP: 1/20; WB: 1/500-1/1000 |
Conjugation | Unconjugated |
MW | Calculated MW: 31 kDa; Observed MW: 31 kDa |
Entrez | 55611 |
UniProt ID | Q96FW1 |
Storage | Store at 4°C short term. Aliquot and store at -20°C long term. Avoid freeze/thaw cycles. |
Buffer/Preservatives | 50mM Tris-Glycine(pH 7.4), 0.15M NaCl, 40% Glycerol, 0.01% Sodium azide and 0.05% rAlbumin |
Alternative names | OTUB1; OTB1; OTU1; HSPC263; Ubiquitin thioesterase Read more... |
Note | For research use only |
Expiration Date | 12 months from date of receipt. |
ELISA, IHC, WB | |
Human | |
Rabbit | |
Polyclonal | |
Unconjugated |
ELISA, IHC, WB | |
Human, Mouse, Rat | |
Rabbit | |
Polyclonal | |
Unconjugated |
Filter by Rating