Anti-RNA polymerase II CTD repeat YSPTSPS (phospho S5) antibody (ab93282)

Overview

  • Product nameAnti-RNA polymerase II CTD repeat YSPTSPS (phospho S5) antibodySee all RNA polymerase II CTD repeat YSPTSPS primary antibodies ...
  • Description
    Rabbit polyclonal to RNA polymerase II CTD repeat YSPTSPS (phospho S5)
  • Tested applicationsIHC-P more details
  • Species reactivity
    Reacts with: Mouse, Human
    Predicted to work with: Rat, Rabbit, Cow, Dog, Pig, Xenopus laevis, Chimpanzee, Fruit fly (Drosophila melanogaster), Plants, Zebrafish, Rhesus monkey, Gorilla, Orangutan
  • Immunogen

    Synthetic phosphopeptide, corresponding to a portion of Human RNA Polymerase II around Serine 5 of the C terminal repeat YSPTSPS.

  • Positive control
    • Human: anaplastic thyroid carcinoma, breast carcinoma, colon carcinoma, non-small cell lung cancer, ovarian carcinoma, pancreatic islet cell tumor, prostate carcinoma, small cell lung cancer, stomach adenocarcinoma, testicular seminoma. Mouse: colon carcinoma CT26, renal cell carcinoma, teratoma.

Properties

Applications

Our Abpromise guarantee covers the use of ab93282 in the following tested applications.

The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.

Application Notes
IHC-P
  • Application notesIHC-P: 1/100 - 1/500. Perform antigen retrieval with citrate bufferbefore commencing with IHC staining protocol.


    Not yet tested in other applications.
    Optimal dilutions/concentrations should be determined by the end user.
  • Target

    • FunctionDNA-dependent RNA polymerase catalyzes the transcription of DNA into RNA using the four ribonucleoside triphosphates as substrates. Largest and catalytic component of RNA polymerase II which synthesizes mRNA precursors and many functional non-coding RNAs. Forms the polymerase active center together with the second largest subunit. Pol II is the central component of the basal RNA polymerase II transcription machinery. It is composed of mobile elements that move relative to each other. RPB1 is part of the core element with the central large cleft, the clamp element that moves to open and close the cleft and the jaws that are thought to grab the incoming DNA template. At the start of transcription, a single-stranded DNA template strand of the promoter is positioned within the central active site cleft of Pol II. A bridging helix emanates from RPB1 and crosses the cleft near the catalytic site and is thought to promote translocation of Pol II by acting as a ratchet that moves the RNA-DNA hybrid through the active site by switching from straight to bent conformations at each step of nucleotide addition. During transcription elongation, Pol II moves on the template as the transcript elongates. Elongation is influenced by the phosphorylation status of the C-terminal domain (CTD) of Pol II largest subunit (RPB1), which serves as a platform for assembly of factors that regulate transcription initiation, elongation, termination and mRNA processing. Acts as a RNA-dependent RNA polymerase when associated with small delta antigen of Hepatitis delta virus, acting both as a replicate and transcriptase for the viral RNA circular genome.
    • Sequence similaritiesBelongs to the RNA polymerase beta' chain family.
    • Post-translational
      modifications
      The tandem 7 residues repeats in the C-terminal domain (CTD) can be highly phosphorylated. The phosphorylation activates Pol II. Phosphorylation occurs mainly at residues 'Ser-2' and 'Ser-5' of the heptapeptide repeat and is mediated, at least, by CDK7 and CDK9. CDK7 phosphorylation of POLR2A associated with DNA promotes transcription initiation by triggering dissociation from DNA. Phosphorylation also takes place at 'Ser-7' of the heptapepdtide repeat, which is required for efficient transcription of snRNA genes and processing of the transcripts. The phosphorylation state is believed to result from the balanced action of site-specific CTD kinases and phosphatases, and a 'CTD code' that specifies the position of Pol II within the transcription cycle has been proposed.
      Dephosphorylated by the protein phosphatase CTDSP1.
      Ubiquitinated by WWP2 leading to proteasomal degradation (By similarity). Following UV treatment, the elongating form of RNA polymerase II (RNA pol IIo) is ubiquitinated UV damage sites without leading to degradation: ubiquitination is facilitated by KIAA1530/UVSSA and promotes RNA pol IIo backtracking to allow access to the nucleotide excision repair machinery.
      Methylated at Arg-1810 by CARM1. Methylation occurs only when the CTD is hypophosphorylated, and phosphorylation at Ser-1805 and Ser-1808 prevent methylation (in vitro). It is assumed that methylation occurs prior to phosphorylation and transcription initiation. CTD methylation may facilitate the expression of select RNAs.
    • Cellular localizationNucleus.
    • Target information above from: UniProt accession P24928 The UniProt Consortium
      The Universal Protein Resource (UniProt) in 2010
      Nucleic Acids Res. 38:D142-D148 (2010) .

      Information by UniProt
    • Database links
      see all
    • Alternative names
      • DNA directed RNA polymerase II A antibody
      • DNA-directed RNA polymerase II largest subunit RNA polymerase II 220 kd subunit antibody
      • DNA-directed RNA polymerase II subunit A antibody
      • DNA-directed RNA polymerase II subunit RPB1 antibody
      • DNA-directed RNA polymerase III largest subunit antibody
      • hRPB220 antibody
      • hsRPB1 antibody
      • POLR2 antibody
      • POLR2A antibody
      • POLRA antibody
      • Polymerase (RNA) II (DNA directed) polypeptide A 220kDa antibody
      • Polymerase (RNA) II (DNA directed) polypeptide A antibody
      • RNA polymerase II subunit B1 antibody
      • RNA-directed RNA polymerase II subunit RPB1 antibody
      • RPB1 antibody
      • RPB1_HUMAN antibody
      • RPBh1 antibody
      • RpIILS antibody
      • RPO2 antibody
      • RPOL2 antibody
      see all

    Anti-RNA polymerase II CTD repeat YSPTSPS (phospho S5) antibody images

    • ab93282, at a 1/100 dilution, staining RNA polymerase II in formalin-fixed paraffin embedded Human prostate carcinoma tissue.
      Red-fluorescent goat anti-rabbit IgG highly cross-adsorbed used at a dilution of 1/100 for detection.
    • ab93282, at a 1/250 dilution, staining RNA polymerase II in Human ovarian carcinoma tissue.
      Left panel: mock phosphatase treated section.
      Right panel: calf intestinal phosphatase-treated section.
      Detection: DAB staining.
    • ab93282, at a 1/250 dilution, staining RNA polymerase II in mouse teratoma tissue.
      Left panel: mock phosphatase treated section.
      Right panel: calf intestinal phosphatase-treated section.
      Detection: DAB staining.

    References for Anti-RNA polymerase II CTD repeat YSPTSPS (phospho S5) antibody (ab93282)

    ab93282 has not yet been referenced specifically in any publications.

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