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OTUB1 Rabbit mAb [061W]Cat NO.: A84088

Western blot(SDS PAGE) analysis of extracts from  WT HEK293T cells.Using OTUB1Rabbit mAb [061W] at dilution of 1:1000 incubated at 4℃ over night.

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Product information

Protein names :OTUB1,OTB1,OTU1,HSPC263,OTUB1_HUMAN,Ubiquitin thioesterase OTUB1

UniProtID :Q96FW1

MASS(da) :31,284

MW(kDa) :31 kDa

Form :Liquid

Purification :Protein A purification

Host :Rabbit

Isotype :IgG

sensitivity :Endogenous

Reactivity :Human,Mouse,Rat

  • ApplicationDilution
  • 免疫印迹(WB)1:1000-2000
  • 免疫荧光(ICC/IF) 1:100
  • The optimal dilutions should be determined by the end user

Specificity :Antibody is produced by immunizing animals with a synthetic peptide at the sequence of human OTUB1

Storage :Antibody store in 10 mM PBS, 0.5mg/ml BSA, 50% glycerol. Shipped at 4°C. Store at-20°C or -80°C. Products are valid for one natural year of receipt.Avoid repeated freeze / thaw cycles.

WB Positive detected : WT HEK293T cells

Function : 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.

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..

Subcellular locationi :Cytoplasm.

IMPORTANT: For western blots, incubate membrane with diluted primary antibody in 1% w/v BSA, 1X TBST at 4°C overnight.