Cas9 | CRISPR-associated endonuclease 9 (monoclonal)

AS17 4124 | Clonality: Monoclonal | Host: Mouse | Reactivity: Cas9 from Streptococcus pyogenes

Product Information

Immunogen Recombinant protein part from the N-terminus of Cas9 from Streptococcus pyogenes.

Host Mouse

Clonality Monoclonal

Subclass/isotype IgG1k

Purity Purified on Protein A in PBS with 0.02 % sodium azide.

Format Liquid

Quantity 50 µg

Storage Store lyophilized/reconstituted at -20°C; once reconstituted make aliquots to avoid repeated freeze-thaw cycles. For long term storage -80°C is recommended. Please, remember to spin tubes briefly prior to opening them to avoid any losses that might occur from lyophilized material adhering to the cap or sides of the tubes.

Tested applications Immunofluorescence (IF), Immunoprecipitation (IP), Western blot (WB)

Recommended dilution 1 : 200 (IF), (IP), 1 : 1000-1 : 5000 (WB)

Expected | apparent MW

Depends upon a MW of a protein which is a fusion partner.

Reactivity

Confirmed reactivity Cas9 from Streptococcus pyogenes

Application examples

Application examples Application example

Protein extracts from HEK293 cells were transfected with a myc-tagged Cas9. Visualization was made using monoclonal anti-Cas) antibodies used in annotated dilutions.

Protein samples were separated on 7.5 % SDS-PAGE and blotted 1h to nitrocellulose membrane. Blots were blocked with 3 % non-fat dry milk in PBS+Tween for 1h at room temperature (RT) with agitation. Blot was incubated in the primary antibody at a given dilution for 1h at RT with agitation in PBS-T. The antibody solution was decanted and the blot was rinsed briefly twice, then washed 3 times for 5 min in TBS-T at RT with agitation. Blot was incubated in secondary antibody (anti-rabbit IgG horse radish peroxidase conjugated) diluted to 1:10 000 in for 1h at RT with agitation. The blot was washed as above and incubated in ECL solution followed by exposure to an X-ray film.

western blot using monoclonal anti-Cas9 antibodies Protein extracts from HEK293 cells were transfected with a myc-tagged Cas9. Transfected cells (lane 2 and 4) and untransfected cells (lane 1 and 3) cells. Detection using anti-myc antibody (lane 3 and 4).

immunoprecipitation using monclonal anti-Cas9 antibodies

IP was performed on whole cell extracts (100 μg) from HEK293 cells transfected with a Flag-tagged Cas9 using monoclonal anti-Cas9 antibodies. The immunoprecipitated proteins were subsequently analysed by Western blot with the antibody. Lane 3 and 4 show the result of the IP; a negative IP control (IP on untransfected cells) and the input (15 μg) are shown in lane 2 and 1, respectively.

immunofluorescence using monoclonal anti-Cas9 antibodies

immunofluorescence using monoclonal anti-Cas9 antibodies

Hela cells were transiently transfected with a Flag-tagged Cas9 expression vector. 48 hours post transfection the cells were fixed in 3.7% formaldehyde, permeabilized in 0.5% Triton-X-100 and blocked in PBS containing 2% BSA for 2 hours at RT. The cells were stained with monoclonal anti-Cas9 (A and B) or with an anti- Flag (C) antibody at 4°C O/N, followed by incubation with an anti-mouse secondary antibody coupled to AF488 for 1 h at RT. Nuclei were counter-stained with Hoechst 33342 (bottom).

Additional information

Related products

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Collection of antibodies to tag proteins

Plant and algal protein extraction buffer

Secondary antibodies

Background

Background Cas9 (CRISPR-associated endonuclease 9) is an RNA-guided DNA endonuclease associated with the Clustered Regularly Interspaced Short Palindromic Repeats (CRISPR) type II adaptive immunity system. CRISPR clusters are transcribed and processed into CRISPR RNA (crRNA). Cas9 protein serves as a genome engineering tool to induce site-directed double strand breaks in DNA. Alternative name: Csn1.