Anti-Rb (phospho S780) antibody (ab47763)
- Datasheet
- References (23)
- Protocols
Overview
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Product nameAnti-Rb (phospho S780) antibody
See all Rb primary antibodies -
DescriptionRabbit polyclonal to Rb (phospho S780)
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Host speciesRabbit
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SpecificityThis antibody detects Rb only when phosphorylated at Serine 780.
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Tested applicationsSuitable for: WB, IHC-P, ELISA, IHC-Frmore details
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Species reactivityReacts with: Mouse, Rat, Human
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Immunogen
Synthetic peptide corresponding to Human Rb (phospho S780).
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Positive control
- K562 cell extract, human breast carcinoma tissue.
Properties
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FormLiquid
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Storage instructionsShipped at 4°C. Store at +4°C short term (1-2 weeks). Upon delivery aliquot. Store at -20°C. Avoid freeze / thaw cycle.
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Storage bufferpH: 7.40
Preservative: 0.02% Sodium azide
Constituents: 49% PBS, 50% Glycerol, 0.87% Sodium chloride
PBS Without Mg+2 and Ca+2 -
Concentration information loading... -
PurityImmunogen affinity purified
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Purification notesThe antibody was affinity-purified from rabbit antiserum by affinity-chromatography using epitope-specific phosphopeptide. The antibody against non-phosphopeptide was removed by chromatography using non-phosphopeptide corresponding to the phosphorylation site.
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ClonalityPolyclonal
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IsotypeIgG
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Research areas
Associated products
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Compatible Secondaries
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Isotype control
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Positive Controls
Applications
Our Abpromise guarantee covers the use of ab47763 in the following tested applications.
The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.
| Application | Abreviews | Notes |
|---|---|---|
| WB | 1/500 - 1/1000. Detects a band of approximately 125 kDa (predicted molecular weight: 106 kDa). | |
| IHC-P | 1/50 - 1/100. | |
| ELISA | 1/4000. | |
| IHC-Fr | Use at an assay dependent concentration. PubMed: 17690131 |
Target
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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.
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Tissue specificityExpressed in the retina.
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Involvement in diseaseChildhood cancer retinoblastoma
Bladder cancer
Osteogenic sarcoma -
Sequence similaritiesBelongs to the retinoblastoma protein (RB) family.
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DomainThe Pocket domain binds to the threonine-phosphorylated domain C, thereby preventing interaction with heterodimeric E2F/DP transcription factor complexes.
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Post-translational
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. -
Cellular localizationNucleus.
- Information by UniProt
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Database links
- Entrez Gene: 5925 Human
- Entrez Gene: 19645 Mouse
- Entrez Gene: 24708 Rat
- Omim: 614041 Human
- SwissProt: P06400 Human
- SwissProt: P13405 Mouse
- SwissProt: P33568 Rat
- Unigene: 408528 Human
see all -
Alternative names
- Exon 17 tumor GOS561 substitution mutation causes premature stop antibody
- GOS563 exon 17 substitution mutation causes premature stop antibody
- OSRC antibody
see all
Images
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Western blot - Anti-Rb (phospho S780) antibody (ab47763)All lanes : Anti-Rb (phospho S780) antibody (ab47763) at 1/500 dilution
Lane 1 : K562 cell extract treated with serum for 20 hours
Lane 2 : K562 cell extract
Predicted band size: 106 kDa
Typically 5-30ug of total protein was loaded per lane of the gel. -
Western blot - Anti-Rb (phospho S780) antibody (ab47763)Western blot analysis of extracts from K562 cells treated or untreated with serum using Rb antibody and ab47763.
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Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-Rb (phospho S780) antibody (ab47763)ab47763 at 1/50 dilution staining paraffin-embedded human breast carcinoma; left without and right with immunising peptide.
Datasheets and documents
References
This product has been referenced in:
- Yu X et al. Baicalein induces cervical cancer apoptosis through the NF-?B signaling pathway. Mol Med Rep 17:5088-5094 (2018). Read more (PubMed: 29393414) »
- Wang H et al. Mangiferin induces islet regeneration in aged mice through regulating p16INK4a. Int J Mol Med 41:3231-3242 (2018). Read more (PubMed: 29512742) »
