This antibody gave a positive signal in the following whole cell lysates:
HeLa (Human epithelial carcinoma cell line)
Jurkat (Human T cell lymphoblast-like cell line)
A431 (Human epithelial carcinoma cell line)
NIH 3T3 (Mouse embryonic fibroblast cell line)
MEF1 (Mouse embryonic fibroblast cell line)
PC12 (Rat adrenal pheochromocytoma cell line)
This antibody gave a positive signal in the following tissue lysate:
Testis (Mouse) Tissue Lysate - normal tissue
Storage instructionsShipped at 4°C. Store at +4°C short term (1-2 weeks). Upon delivery aliquot. Store at -20°C or -80°C. Avoid freeze / thaw cycle.
Batches of this product that have a concentration < 1mg/ml may have BSA added as a stabilising agent. If you would like information about the formulation of a specific lot, please contact our scientific support team who will be happy to help.
FunctionAccepts the ubiquitin-like proteins SUMO1, SUMO2, SUMO3 and SUMO4 from the UBLE1A-UBLE1B E1 complex and catalyzes their covalent attachment to other proteins with the help of an E3 ligase such as RANBP2 or CBX4. Necessary for sumoylation of FOXL2 and KAT5. Essential for nuclear architecture and chromosome segregation.
Tissue specificityExpressed in heart, skeletal muscle, pancreas, kidney, liver, lung, placenta and brain. Also expressed in testis and thymus.
PathwayProtein modification; protein sumoylation.
Sequence similaritiesBelongs to the ubiquitin-conjugating enzyme family.
Cellular localizationNucleus. Cytoplasm. Mainly nuclear. In spermatocytes, localizes in synaptonemal complexes. Recruited by BCL11A into the nuclear body.
UBE2I / UBC9 was immunoprecipitated using 0.5mg Hela whole cell extract, 5µg of Rabbit polyclonal to UBE2I / UBC9 and 50µl of protein G magnetic beads (+). No antibody was added to the control (-). The antibody was incubated under agitation with Protein G beads for 10min, Hela whole cell extract lysate diluted in RIPA buffer was added to each sample and incubated for a further 10min under agitation. Proteins were eluted by addition of 40µl SDS loading buffer and incubated for 10min at 70oC; 10µl of each sample was separated on a SDS PAGE gel, transferred to a nitrocellulose membrane, blocked with 5% BSA and probed with ab33044. Secondary: Clean blot (HRP conjugate) at 1/1000 dilution. Band: 18kDa: UBE2I / UBC9.
ICC/IF image of ab33044 stained human HeLa cells. The cells were PFA fixed (10 min), permabilised in TBS-T (20 min) and incubated with the antibody (ab33044, 1µg/ml) for 1h at room temperature. 1%BSA / 10% normal goat serum / 0.3M glycine was used to quench autofluorescence and block non-specific protein-protein interactions. 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). DAPI was used to stain the cell nuclei (blue).
IHC image of ab33044 staining UBE2I / UBC9 in Human kidney formalin fixed paraffin embedded tissue section, performed on a Leica BondTM system using the standard protocol F. The section was pre-treated using heat mediated antigen retrieval with sodium citrate buffer (pH6, epitope retrieval solution 1) for 20 mins. The section was then incubated with ab33044, 5µg/ml, for 15 mins at room temperature and detected using an HRP conjugated compact polymer system. DAB was used as the chromogen. The section was then counterstained with haematoxylin and mounted with DPX.
For other IHC staining systems (automated and non-automated) customers should optimize variable parameters such as antigen retrieval conditions, primary antibody concentration and antibody incubation times.
References for Anti-UBE2I / UBC9 antibody (ab33044)
Kelley JB et al. The defective nuclear lamina in hutchinson-gilford progeria syndrome disrupts the nucleocytoplasmic ran gradient and inhibits nuclear localization of ubc9. Mol Cell Biol31:3378-95 (2011).
Read more (PubMed: 21670151) »