• Product name
    Anti-Rb (phospho S780) antibody
    See all Rb primary antibodies
  • Description
    Rabbit polyclonal to Rb (phospho S780)
  • Host species
  • Specificity
    This antibody detects Rb only when phosphorylated at Serine 780.
  • Tested applications
    Suitable for: WB, IHC-P, ELISA, IHC-Frmore details
  • Species reactivity
    Reacts with: Mouse, Rat, Human
  • Immunogen

    Synthetic peptide corresponding to Human Rb (phospho S780).

  • Positive control
    • K562 cell extract, human breast carcinoma tissue.



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


  • Function
    Key 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 specificity
    Expressed in the retina.
  • Involvement in disease
    Childhood cancer retinoblastoma
    Bladder cancer
    Osteogenic sarcoma
  • Sequence similarities
    Belongs to the retinoblastoma protein (RB) family.
  • Domain
    The Pocket domain binds to the threonine-phosphorylated domain C, thereby preventing interaction with heterodimeric E2F/DP transcription factor complexes.
  • Post-translational
    Phosphorylated 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 localization
  • Information by UniProt
  • Database links
  • Alternative names
    • Exon 17 tumor GOS561 substitution mutation causes premature stop antibody
    • GOS563 exon 17 substitution mutation causes premature stop antibody
    • OSRC antibody
    • Osteosarcoma antibody
    • p105-Rb antibody
    • P105RB antibody
    • PP105 antibody
    • pp110 antibody
    • PPP1R130 antibody
    • pRb antibody
    • Prepro retinoblastoma associated protein antibody
    • Protein phosphatase 1 regulatory subunit 130 antibody
    • Rb antibody
    • RB transcriptional corepressor 1 antibody
    • RB_HUMAN antibody
    • RB1 antibody
    • RB1 gene antibody
    • Retinoblastoma 1 antibody
    • Retinoblastoma suspectibility protein antibody
    • Retinoblastoma-associated protein antibody
    see all


  • 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.
  • ab47763 at 1/50 dilution staining paraffin-embedded human breast carcinoma; left without and right with immunising peptide.


This product has been referenced in:
  • Tian C  et al. ABCG1 as a potential oncogene in lung cancer. Exp Ther Med 13:3189-3194 (2017). Read more (PubMed: 28588672) »
  • Gravina GL  et al. Episode-like pulse testosterone supplementation induces tumor senescence and growth arrest down-modulating androgen receptor through modulation of p-ERK1/2, pARser81and CDK1 signaling: biological implications for men treated with testosterone replacement therapy. Oncotarget 8:113792-113806 (2017). Read more (PubMed: 29371946) »

See all 20 Publications for this product

Customer reviews and Q&As

Thank you for calling Abcam earlier today.
I am sorry about the issues you were having with ab47763 in western blotting. As we discussed, I am sending you an aliquot of ab32513 as a free of charge replacement. Your new order number is *.
If the...

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Abcam guarantees this product to work in the species/application used in this Abreview.
Western blot
Human Cell lysate - whole cell (MCF-7)
Loading amount
5 µg
CDK7 inhibitor
Gel Running Conditions
Reduced Denaturing (10)
Blocking step
BSA as blocking agent for 12 hour(s) and 0 minute(s) · Concentration: 5% · Temperature: 4°C

Dr. Dean Heathcote

Verified customer

Submitted Oct 28 2009


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