Anti-Werner's syndrome helicase WRN antibody (ab200)


  • Product name
    Anti-Werner's syndrome helicase WRN antibody
    See all Werner's syndrome helicase WRN primary antibodies
  • Description
    Rabbit polyclonal to Werner's syndrome helicase WRN
  • Host species
  • Tested applications
    Suitable for: ELISA, ICC, IHC-P, ICC/IF, WBmore details
  • Species reactivity
    Reacts with: Human
  • Immunogen

    Synthetic peptide, corresponding to amino acids 1-510 of Human Werner's syndrome helicase WRN

  • Positive control
    • WRN +/+ cells



Our Abpromise guarantee covers the use of ab200 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
ELISA Use at an assay dependent concentration. PubMed: 17118963
ICC Use at an assay dependent concentration.
IHC-P Use at an assay dependent concentration.
ICC/IF Use at an assay dependent concentration.
WB 1/2000. Predicted molecular weight: 162 kDa.


  • Function
    Multifunctional enzyme that has both magnesium and ATP-dependent DNA-helicase activity and 3'->5' exonuclease activity towards double-stranded DNA with a 5'-overhang. Has no nuclease activity towards single-stranded DNA or blunt-ended double-stranded DNA. Binds preferentially to DNA substrates containing alternate secondary structures, such as replication forks and Holliday junctions. May play an important role in the dissociation of joint DNA molecules that can arise as products of homologous recombination, at stalled replication forks or during DNA repair. Alleviates stalling of DNA polymerases at the site of DNA lesions. Important for genomic integrity. Plays a role in the formation of DNA replication focal centers; stably associates with foci elements generating binding sites for RP-A.
  • Involvement in disease
    Defects in WRN are a cause of Werner syndrome (WRN) [MIM:277700]. WRN is a rare autosomal recessive progeroid syndrome characterized by the premature onset of multiple age-related disorders, including atherosclerosis, cancer, non-insulin-dependent diabetes mellitus, ocular cataracts and osteoporosis. The major cause of death, at a median age of 47, is myocardial infarction. Currently all known WS mutations produces prematurely terminated proteins.
    Defects in WRN may be a cause of colorectal cancer (CRC) [MIM:114500].
  • Sequence similarities
    Belongs to the helicase family. RecQ subfamily.
    Contains 1 3'-5' exonuclease domain.
    Contains 1 helicase ATP-binding domain.
    Contains 1 helicase C-terminal domain.
    Contains 1 HRDC domain.
  • Post-translational
    Phosphorylated by PRKDC. Phosphorylated upon DNA damage, probably by ATM or ATR.
  • Cellular localization
    Nucleus > nucleolus. Nucleus.
  • Information by UniProt
  • Database links
  • Alternative names
    • DKFZp686C2056 antibody
    • DNA helicase antibody
    • DNA helicase, RecQ like type 3 antibody
    • Exonuclease WRN antibody
    • HGNC 12791 antibody
    • OTTHUMP00000225301 antibody
    • RecQ protein-like 2 antibody
    • RecQ-like type 3 antibody
    • RecQ3 antibody
    • RECQL2 antibody
    • RECQL3 antibody
    • Werner syndrome ATP-dependent helicase antibody
    • Werner syndrome helicase antibody
    • Werner syndrome protein antibody
    • Werner syndrome, RecQ helicase like antibody
    • WRN antibody
    • WRN_HUMAN antibody
    see all


  • ab200 (1/1000) staining Werner's syndrome helicase WRN in HeLa cells (green). Cells were fixed in methanol, permeabilized with 0.5% Triton X100/ PBS and counterstained with DAPI in order to highlight the nucleus (red). Please refer to abreview for further experimental details.

    See Abreview

  • ab200 (4µg/ml) staining Werner's syndrome helicase WRN in human colon using an automated system (DAKO Autostainer Plus). Using this protocol there is nuclear and some cytoplasmic staining.
    Sections were rehydrated and antigen retrieved with the Dako 3 in 1 AR buffer citrate pH 6.0 in a DAKO PT link. Slides were peroxidase blocked in 3% H2O2 in methanol for 10 mins. They were then blocked with Dako Protein block for 10 minutes (containing casein 0.25% in PBS) then incubated with primary antibody for 20 min and detected with Dako Envision Flex amplification kit for 30 minutes. Colorimetric detection was completed with Diaminobenzidine for 5 minutes. Slides were counterstained with Haematoxylin and coverslipped under DePeX. Please note that, for manual staining, optimization of primary antibody concentration and incubation time is recommended. Signal amplification may be required.
  • All lanes : Anti-Werner's syndrome helicase WRN antibody (ab200) at 1/5000 dilution

    Lane 1 : Human primary fibroblasts whole cell lysate
    Lane 2 : Human primary fibroblasts whole cell lysate - siRNA against WRN

    Lysates/proteins at 30 µg per lane.

    All lanes : Alexa Fluor® 680-conjugated goat anti-rabbit IgG at 1/10000 dilution

    Performed under reducing conditions.

    Predicted band size: 162 kDa
    Observed band size: 160 kDa (why is the actual band size different from the predicted?)

    Exposure time: 2 minutes

    Blocked using LI-COR® Odyssey® Blocking Buffer for 45 minutes at room temperature.

    Primary antibody dilution buffer: Blocker 1:1 in PBS + 0.1% Tween.

    See Abreview


This product has been referenced in:

See all 20 Publications for this product

Customer reviews and Q&As

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There will be a delay in you receiving these antibodies as ab2179 is currently out of stock, but it is due to come in on June 11th and we will hopefully send it to you the same day. I am sorry about the delay.
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Thank you for calling Abcam earlier today.
I am sorry about the difficulty you have been having with a few of our antibodies and below are links to a few that would make a suitable alternative:

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Thank you for your enquiry. You are correct the publication that you refer to; Agrelo R et al. Epigenetic inactivation of the premature aging Werner syndrome gene in human cancer. Proc Natl Acad Sci U S A 103:8822-7 (2006). PubMed: 16723399 ap...

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Thank you for your enquiry. The immunogen used to make this antibody was the N-terminus, amino acids 1-510, of the protein. I hope this information helps, please do not hesitate to contact us if you need any more advice or information.

Thank you for your enquiry and for taking your time to fill in the on-line questionnaire. We are very sorry to her that your customer is having problem with this antibody. Would you be so kind to provide further information about: 1. How much pr...

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N-terminal of WRN. Aminoacids 1- 510

Thanks for your message. If you're having problems with high background, I would recommend blocking with 5% w/v BSA in PBST or TBST, and thus diluting the primary with that. That should help. If you need further assistance, just let us know.

Thank you for your email and I'm sorry to hear that you are experiencing difficulty with this antibody. Ab200 has been tested for application in IF. As stated on the online datasheet, it works well in immunoflouresence on WRN +/+ cells and is negative ...

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There are a number of steps you can take to decrease background bands in WB. I'd recommend that you try using the antibody at a higher dilution say 1:2,500 and/ or increase the stringency of the wash steps.

1-10 of 11 Q&A


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