• USA Home
  • MABS1291 - Anti-Cas9 Antibody, C-term. clone 10C11-A12

MABS1291 Sigma-Aldrich

Anti-Cas9 Antibody, C-term. clone 10C11-A12

clone 10C11-A12, from mouse

Synonym: CRISPR-associated endonuclease Cas9/Csn1, SpyCas9

  •  eCl@ss 32160702

  •  NACRES NA.41



Related Categories Alphabetical Index, Antibodies, CAM-CB, Primary Antibodies
clone   10C11-A12, monoclonal
biological source   mouse
application(s)   immunocytochemistry: suitable
  immunoprecipitation (IP): suitable
  western blot: suitable
species reactivity   bacteria
shipped in   wet ice
isotype   IgG1κ
Quality Level   100
antibody product type   primary antibodies
NCBI accession no.   NP_269215
UniProt accession no.   Q99ZW2


General description

CRISPR-associated endonuclease Cas9/Csn1 (UniProt Q99ZW2; also known as SpyCas9) is encoded by the Streptococcus pyogenes serotype M1 gene cas9 (also known as csn1) gene (Gene ID 901176). Clustered regularly interspaced short palindromic repeats (CRISPRs) are DNA loci containing short repetitions of base sequences complementary to antecedent mobile elements and target invading nucleic acids. Each repetition is followed by short segments of spacer DNA from previous exposures to a virus. Cas9 is an essential endonuclease in Streptococcus pyogenes serotype M1′s CRISPR immune system that confers resistance to foreign genetic elements such as plasmids and phages. CRISPR clusters are transcribed and processed into CRISPR RNA (crRNA). In type II CRISPR systems, correct processing of pre-crRNA requires a trans-encoded small RNA (tracrRNA), endogenous ribonuclease 3 (rnc), and Cas9. Cas9/crRNA/tracrRNA endonucleolytically cleaves linear or circular dsDNA target complementary to the spacer. The target strand not complementary to crRNA is first cut endonucleolytically, and then trimmed 3′-5′ exonucleolytically.


Clone 10C11-A12 recognizes an epitope located in the C-terminal region of Cas9.


His-tagged recombinant S.pyogenes Cas9 C-terminal fragment.


Anti-Cas9 Antibody, C-term. clone 10C11-A12 is an antibody against Cas9 for use in Immunocytochemistry, Immunoprecipitation, and Western Blotting.

Immunocytochemistry Analysis: 33.5 µg/mL from a representative lot detected doxycycline-induced expression of exogenously transfected S. pyogenes Cas9 construct under the control of the PTight (Tet-ON) promoter by fluorescent immunocytochemistry staining of methanol-fixed, acetone-permeabilized HeLa transfectants (Courtesy of Dr. Stefan Schuechner and Dr. Egon Ogris, Medical University of Vienna, Austria).
Immunoprecipitation Analysis: 13.4 µg from a representative lot immunoprecipitated exogenously expressed Cas9 in 250 µg of lysate from transfected, but not untransfected, HeLa cells (Courtesy of Dr. Stefan Schuechner and Dr. Egon Ogris, Medical University of Vienna, Austria).
Western Blotting Analysis: 1.675 µg/mL from a representative lot detected exogenously expressed Cas9 in 20 µg of lysate from transfected, but not untransfected, HeLa cells (Courtesy of Dr. Stefan Schuechner and Dr. Egon Ogris, Medical University of Vienna, Austria).
Western Blotting Analysis: Clone 10C11-A12 hybridoma culture supernatant detected doxycycline treatment-induced expression of a FLAG-tagged Cas9 construct under the control of the PTight promoter in a HeLa-derived Tet-ON cell line (Courtesy of Dr. Stefan Schuechner and Dr. Egon Ogris, Medical University of Vienna, Austria).

Target description

~158 kDa observed. 158.4 kDa calculated.

Physical form

Format: Purified


Evaluated by Western Blotting in Cas9-transfected HeLa cell lysate.

Western Blotting Analysis: 0.5 µg/mL of this antibody detected the exogenously expressed Cas9 in 10 µg lysate from transfected HeLa cells.

Other Notes

Concentration: Please refer to lot specific datasheet.

Safety & Documentation

Safety Information

Safety Information for this product is unavailable at this time.
Protocols & Articles


Antibody Basics

Immunoglobulins (Igs) are produced by B lymphocytes and secreted into plasma. The Ig molecule in monomeric form is a glycoprotein with a molecular weight of approximately 150 kDa that is shaped more ...
Keywords: Affinity chromatography, Centrifugation, Chromatography, Digestions, Direct immunofluorescence, Gene expression, High performance liquid chromatography, Immunofluorescence, Ion Exchange, Microscopy, Precipitation, Purification, Rheumatology, Scanning electron microscopy


Western Blot Protocol | Immunoblotting Protocol

Western Blotting refers to the electrophoretic transfer of proteins from sodium dodecyl sulfate polyacrylamide gels to sheets of PVDF or nitrocellullose membrane, followed by immunodetection of prote...
Keywords: AGE, Buffers, Cell disruption, Detection methods, Detergents, Dialysis, Electroblotting, Electrophoresis, Enzyme activity, Gel electrophoresis, Immunoprecipitation, PAGE, Protein extraction, Purification, Sample preparations, Western blot

Related Content

Antibody Explorer | Buy Primary Antibodies & Secondary Antibodies

Primary, Secondary and Recombinant Monoclonal Antibodies Providing highly cited primary and secondary antibodies, we have you covered for your ELISA, western blot, immunohistochemistry or other assay...
Keywords: Alzheimer Disease, Cancer, Chromatin immunoprecipitation, Diagnostic, Enzyme-linked immunosorbent assay, Flow cytometry, Immunocytochemistry, Immunofluorescence, Immunohistochemistry, Neuroscience, Western blot

Related Products

Technical Service:

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Bulk Ordering & Pricing:

Need larger quantities for your development, manufacturing or research applications?