Anti-DNA-RNA Hybrid [S9.6] Antibody

This mouse monoclonal antibody was generated against a ΦX174 bacteriophage-derived synthetic DNA–RNA antigen and recognizes RNA-DNA hybrids of various lengths.


  • Useful in the detection of R-loops
  • High specificity and affinity for DNA-RNA hybrids
  • Does NOT cross-react with single-stranded DNA or double-stranded DNA
  • Minor cross-reaction (~5-fold less) has been observed for AU-rich double-stranded RNA.
  • High affinity binding shown for hybrids of 8, 10, 15, and 23 base pairs in length

Recombinant versions available from our sister company, Absolute Antibody:

DNA-RNA hybrids are a natural occurrence within eukaryotic cells, with levels of these hybrids increasing at sites with high transcriptional activity, such as during transcription initiation, repression, and elongation. Because RNA-DNA hybrids influence genomic instability, the S9.6 antibody is a useful reagent to help study the consequences of R-loops and lesions formed by these hybrids during DNA replication or other cellular processes. In addition, the S9.6 antibody is effective in recognizing RNA-DNA hybridization for microarray studies.

From the laboratory of Stephen H. Leppla, PhD, National Institute of Allergy and Infectious Diseases/NIH.

Catalog Number Product DataSheet Size AVAILABILITY Price Qty
Anti-DNA-RNA Hybrid [S9.6] Antibody, 1mg (10x100ug)
1mg (10x100ug) In stock
Regular Price:$3,150.00
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Anti-DNA-RNA Hybrid [S9.6] Antibody, 100ug
100ug In stock
Regular Price:$360.00
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Recombinant Anti-[S9.6], Rabbit IgG, 100ug
100ug In stock
Regular Price:$455.00
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Recombinant Anti-[S9.6], Mouse Fab fragment, His-Tagged, Kappa, 100ug
100ug In stock
Regular Price:$455.00
On Sale:
Recombinant Anti-[S9.6], Goat IgG, 100ug
100ug In stock
Regular Price:$455.00
On Sale:
Recombinant Anti-[S9.6], Mouse IgG2a, Kappa, 100ug
100ug In stock
Regular Price:$455.00
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Product Type: Antibody
Name: Anti-DNA-RNA Hybrid [S9.6]
Antigen: S9.6 ΦX174 bacteriophage-derived synthetic DNA–RNA antigen
Isotype: Rabbit IgG
Fusion Tag(s): Mouse Fab version contains His-tag
Clone Name: S9.6
Reactivity: High specificity and affinity for DNA/RNA hybrids and other A-form nucleic acid hybrids
Immunogen: ΦX174 bacteriophage-derived synthetic DNA/RNA
Purification Method: Protein A/G
Buffer: ENHOO1: PBS, 0.05% (w/v) Sodium Azide
Ab01137- : PBS with 0.02% Proclin 300
Tested Applications:

Dot Blot Analysis: 0.2 µg/mL.
Affinity Binding Assay: Clone S9.6 bound the DNA-RNA heteropolymer and poly(I)-poly(dC) equally, but 100-fold higher levels of poly(A)-poly(dT) were required to achieve a similar degree of binding. Single-stranded DNA, double-stranded DNA and RNA, and ribosomal RNA were not bound by clone S9.6 (Boguslawski, S.J., et al. (1986). J. Immunol Methods. 89(1):123-130).
Chromatin Immunoprecipitation (ChIP) Analysis: A representative lot detected increased DNA RNA hybrids at four actively transcribed genes upon shRNA-mediated knockdown of BRCA1 or BRCA2, but not PCID2 or RAD51 in HeLa cells (Bhatia, V., et al. (2014). Nature. 511(7509):362-365).
Chromatin Immunoprecipitation (ChIP) Analysis: A representative lot detected R-loops formed over beta-actin gene using HeLa chromatin preparation. RNase H treatment of the chromatin preparation prevented clone S9.6 from immunoprecipitating target chromatin fragments (Skourti-Stathaki, K., et al. (2011). Mol. Cell. 42(6):794-805).
Chromatin Immunoprecipitation-sequencing (ChIP-seq) Analysis: A representative lot detected genome-wide distribution of DNA-RNA hybrids in budding yeast by ChIP-seq analysis (El Hage, A., et al. (2014). PLoS Genet. 10(10):e1004716).
Immunocytochemistry Analysis: Representative lots immunolocalized nuclear R loops by fluorescent immunocytochemistry staining of methanol-fixed H1 human embryonic stem cells (hESCs) and formaldehyde-fixed HeLa cells (Bhatia, V., et al. (2014). Nature. 511(7509):362-365; Ginno, P.A., et al. (2012). Mol. Cell. 45(6):814-825).
Immunoprecipitation Analysis: A representative lot immunoprecipitated in vitro transcribed R-loop substrate (DNA-RNA hybrid), but not doouble-stranded DNA (dsDNA) (Ginno, P.A., et al. (2012). Mol. Cell. 45(6):814-825).
See also: S9.6 Publications by Application

From the laboratory of Stephen H. Leppla, PhD, National Institute of Allergy and Infectious Diseases/NIH.

PDF Anti-DNA-RNA Hybrid [S9.6] Antibody - Publications by Application »

  1. Phillips DD, Garboczi DN, Singh K, Hu Z, Leppla SH, Leysath CE. The sub-nanomolar binding of DNA-RNA hybrids by the single-chain Fv fragment of antibody S9.6. J Mol Recognit. 2013 Aug;26(8):376-81.
  2. Boguslawski SJ, Smith DE, Michalak MA, Mickelson KE, Yehle CO, Patterson WL, Carrico RJ. Characterization of monoclonal antibody to DNA.RNA and its application to immunodetection of hybrids. J Immunol Methods. 1986 May 1;89(1):123-30.
  3. Yehle CO, Patterson WL, Boguslawski SJ, Albarella JP, Yip KF, Carrico RJ. A solution hybridization assay for ribosomal RNA from bacteria using biotinylated DNA probes and enzyme-labeled antibody to DNA:RNA. Mol Cell Probes. 1987 Jun;1(2):177-93.
  4. Miller CA, Patterson WL, Johnson PK, Swartzell CT, Wogoman F, Albarella JP, Carrico RJ. Detection of bacteria by hybridization of rRNA with DNA-latex and immunodetection of hybrids. J Clin Microbiol. 1988 Jul;26(7):1271-6.
  5. Casebolt DB, Stephensen CB. Monoclonal antibody solution hybridization assay for detection of mouse hepatitis virus infection. J Clin Microbiol. 1992 Mar;30(3):608-12.
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  7. Székvölgyi L, Rákosy Z, Bálint BL, Kókai E, Imre L, Vereb G, Bacsó Z, Goda K, Varga S, Balázs M, Dombrádi V, Nagy L, Szabó G. Ribonucleoprotein-masked nicks at 50-kbp intervals in the eukaryotic genomic DNA. Proc Natl Acad Sci U S A. 2007 Sep 18;104(38):14964-9.
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