Product nameAnti-eIF3B antibody
See all eIF3B primary antibodies
DescriptionRabbit polyclonal to eIF3B
Tested applicationsSuitable for: WB, ICC/IFmore details
Species reactivityReacts with: Human
Predicted to work with: Mouse, Rat, Cow, Drosophila melanogaster
- This antibody gave a positive signal in the following whole cell lysates; HEK293, HepG2, SHSY-5Y and U2OS. IF/ICC: HeLa cell line.
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.
Storage bufferPreservative: 0.02% Sodium Azide
Constituents: 1% BSA, PBS, pH 7.4
Concentration information loading...
PurityImmunogen affinity purified
Our Abpromise guarantee covers the use of ab40799 in the following tested applications.
The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.
|WB||Use a concentration of 1 µg/ml. Detects a band of approximately 110 kDa (predicted molecular weight: 92 kDa).|
|ICC/IF||Use a concentration of 5 µg/ml.|
FunctionComponent of the eukaryotic translation initiation factor 3 (eIF-3) complex, which is required for several steps in the initiation of protein synthesis. The eIF-3 complex associates with the 40S ribosome and facilitates the recruitment of eIF-1, eIF-1A, eIF-2:GTP:methionyl-tRNAi and eIF-5 to form the 43S preinitiation complex (43S PIC). The eIF-3 complex stimulates mRNA recruitment to the 43S PIC and scanning of the mRNA for AUG recognition. The eIF-3 complex is also required for disassembly and recycling of post-termination ribosomal complexes and subsequently prevents premature joining of the 40S and 60S ribosomal subunits prior to initiation.
Sequence similaritiesBelongs to the eIF-3 subunit B family.
Contains 1 RRM (RNA recognition motif) domain.
Contains 5 WD repeats.
DomainThe RRM domain mediates interaction with EIF3J.
modificationsPhosphorylated. Phosphorylation is enhanced upon serum stimulation.
- Information by UniProt
- eIF-3-eta antibody
- eIF3 eta antibody
- eIF3 p110 antibody
ICC/IF image of ab40799 stained MCF7 cells. The cells were 4% formaldehyde fixed (10 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 (ab40799, 5µg/ml) overnight at +4°C. The secondary antibody (green) was ab96899, DyLight® 488 goat anti-rabbit IgG (H+L) used at a 1/250 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.
All lanes : Anti-eIF3B antibody (ab40799) at 1 µg/ml
Lane 1 : HEK293 (Human embryonic kidney cell line) Whole Cell Lysate
Lane 2 : HepG2 (Human hepatocellular liver carcinoma cell line) Whole Cell Lysate
Lane 3 : SHSY-5Y (Human neuroblastoma cell line) Whole Cell Lysate
Lane 4 : U2OS (Human osteosarcoma cell line) Whole Cell Lysate
Lysates/proteins at 10 µg per lane.
All lanes : IRDye 680 Conjugated Goat Anti-Rabbit IgG (H+L) at 1/10000 dilution
Performed under reducing conditions.
Predicted band size: 92 kDa
Observed band size: 110 kDa why is the actual band size different from the predicted?
This antibody was raised against an immunogen that is predicted to cross react with both isoforms 1 and 2 of eIF3B. We believe that the band observed is isoform 2 due to its higher molecular weight of 110 kDa. Predicted molecular weights of the isoforms are 92 kDa and 99 kDa respectively.
This product has been referenced in:
- Wang L & Ouyang L Effects of EIF3B gene downregulation on apoptosis and proliferation of human ovarian cancer SKOV3 and HO-8910 cells. Biomed Pharmacother 109:831-837 (2019). Read more (PubMed: 30551537) »
- Fathinajafabadi A et al. CERKL, a retinal disease gene, encodes an mRNA-binding protein that localizes in compact and untranslated mRNPs associated with microtubules. PLoS One 9:e87898 (2014). WB ; Human . Read more (PubMed: 24498393) »