Key features and details
- Rabbit polyclonal to Rb (phospho S780)
- Suitable for: WB, IHC-P, ICC/IF
- Reacts with: Mouse, Rat, Human
- Isotype: IgG
Product nameAnti-Rb (phospho S780) antibody
See all Rb primary antibodies
DescriptionRabbit polyclonal to Rb (phospho S780)
Specificityab131264 detects endogenous levels of Rb only when phosphorylated at serine 780.
Tested applicationsSuitable for: WB, IHC-P, ICC/IFmore details
Species reactivityReacts with: Mouse, Rat, Human
- 3T3 cell extract treated with UV; HeLa cells; Human breast carcinoma tissue
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Storage instructionsShipped at 4°C. Store at -20°C. Stable for 12 months at -20°C.
Storage bufferpH: 7.40
Preservative: 0.02% Sodium azide
Constituents: 49% PBS, 50% Glycerol (glycerin, glycerine), 0.88% Sodium chloride
PBS is without Mg2+ and Ca2+
Concentration information loading...
PurityImmunogen affinity purified
Purification notesab131264 was purified by affinity-chromatography using epitope-specific phosphopeptide. Non-phospho specific antibodies were removed by chromatography using non-phosphopeptide.
Our Abpromise guarantee covers the use of ab131264 in the following tested applications.
The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.
|WB||1/500 - 1/1000. Detects a band of approximately 110 kDa (predicted molecular weight: 106 kDa).|
|IHC-P||1/50 - 1/100.|
|ICC/IF||1/100 - 1/200.|
FunctionKey regulator of entry into cell division that acts as a tumor suppressor. Promotes G0-G1 transition when phosphorylated by CDK3/cyclin-C. Acts as a transcription repressor of E2F1 target genes. The underphosphorylated, active form of RB1 interacts with E2F1 and represses its transcription activity, leading to cell cycle arrest. Directly involved in heterochromatin formation by maintaining overall chromatin structure and, in particular, that of constitutive heterochromatin by stabilizing histone methylation. Recruits and targets histone methyltransferases SUV39H1, KMT5B and KMT5C, leading to epigenetic transcriptional repression. Controls histone H4 'Lys-20' trimethylation. Inhibits the intrinsic kinase activity of TAF1. Mediates transcriptional repression by SMARCA4/BRG1 by recruiting a histone deacetylase (HDAC) complex to the c-FOS promoter. In resting neurons, transcription of the c-FOS promoter is inhibited by BRG1-dependent recruitment of a phospho-RB1-HDAC1 repressor complex. Upon calcium influx, RB1 is dephosphorylated by calcineurin, which leads to release of the repressor complex (By similarity). In case of viral infections, interactions with SV40 large T antigen, HPV E7 protein or adenovirus E1A protein induce the disassembly of RB1-E2F1 complex thereby disrupting RB1's activity.
Tissue specificityExpressed in the retina.
Involvement in diseaseChildhood cancer retinoblastoma
Sequence similaritiesBelongs to the retinoblastoma protein (RB) family.
DomainThe Pocket domain binds to the threonine-phosphorylated domain C, thereby preventing interaction with heterodimeric E2F/DP transcription factor complexes.
modificationsPhosphorylated by CDK6 and CDK4, and subsequently by CDK2 at Ser-567 in G1, thereby releasing E2F1 which is then able to activate cell growth. Dephosphorylated at the late M phase. SV40 large T antigen, HPV E7 and adenovirus E1A bind to the underphosphorylated, active form of pRb. Phosphorylation at Thr-821 and Thr-826 promotes interaction between the C-terminal domain C and the Pocket domain, and thereby inhibits interactions with heterodimeric E2F/DP transcription factor complexes. Dephosphorylated at Ser-795 by calcineruin upon calcium stimulation. CDK3/cyclin-C-mediated phosphorylation at Ser-807 and Ser-811 is required for G0-G1 transition. Phosphorylated by CDK1 and CDK2 upon TGFB1-mediated apoptosis.
N-terminus is methylated by METTL11A/NTM1 (By similarity). Monomethylation at Lys-810 by SMYD2 enhances phosphorylation at Ser-807 and Ser-811, and promotes cell cycle progression. Monomethylation at Lys-860 by SMYD2 promotes interaction with L3MBTL1.
Acetylation at Lys-873 and Lys-874 regulates subcellular localization, at least during keratinocytes differentiation.
- Information by UniProt
- Exon 17 tumor GOS561 substitution mutation causes premature stop antibody
- GOS563 exon 17 substitution mutation causes premature stop antibody
- OSRC antibody
Immunohistochemical analysis of paraffin-embedded Human breast carcinoma tissue labelling Rb (phospho S780) with ab131264 at 1/50 dilution. Right panel was preincubated with blocking peptide.
All lanes : Anti-Rb (phospho S780) antibody (ab131264) at 1/500 dilution
Lane 1 : 3T3 cell extract untreated
Lane 2 : 3T3 cell extract treated with UV
Predicted band size: 106 kDa
Observed band size: 110 kDa why is the actual band size different from the predicted?
Immunofluorescence analysis of methanol-fixed HeLa cells labelling Rb (phospho S780) with ab131264 at 1/100 dilution.
ab131264 has not yet been referenced specifically in any publications.