Sample Prep & Detection Kits
Conjugation kitsPurification kitsSample preparation kitsChromogen kitsIHC kitsChIP kitsAccessory Reagents & Controls
Accessory reagents & controlsBiochemicals
BiochemicalsProteins and Peptides
Proteins and peptidesAnti-Ly6g antibody [1A8] - mouse IgG2c (Chimeric)
Low endotoxin, Azide free.
Our first-to-market chimera with mouse IgG2c backbone, this functional antibody specifically depletes neutrophils in vivo for up to 72h.
Learn about all product ranges with our product overviews.
Featured events
Make new connections at our global events.
Our programs
New Lab Program
Get a head start with our exclusive new lab discount. Enjoy 20% off and free shipping for three months.
New Biotech Program
Just starting out? Get 15% off and free shipping to your lab for six months.
Product promise
Peace of mind that all products perform as stated.
Product reviews
Leave reviews, get rewarded and help your community.
Trial program
Try untested species and applications to earn money off your next order.
Product Insider Program
Be the first to know about our latest product launches - and unlock exclusive offers and discounts.
Knockout Tested Rabbit Recombinant Monoclonal CD33 antibody. Suitable for IP, Flow Cyt, WB and reacts with Human samples. Cited in 3 publications.
IgG
Rabbit
pH: 7.2 - 7.4
Preservative: 0.01% Sodium azide
Constituents: 59% PBS, 40% Glycerol (glycerin, glycerine), 0.05% BSA
Liquid
Monoclonal
IP | Flow Cyt | WB | IHC-P | |
---|---|---|---|---|
Human | Tested | Tested | Tested | Not recommended |
Mouse | Not recommended | Not recommended | Not recommended | Not recommended |
Species | Dilution info | Notes |
---|---|---|
Species Human | Dilution info 1/10 - 1/100 | Notes - |
Species | Dilution info | Notes |
---|---|---|
Species Mouse | Dilution info - | Notes - |
Species | Dilution info | Notes |
---|---|---|
Species Human | Dilution info 1/500 | Notes - |
Species | Dilution info | Notes |
---|---|---|
Species Mouse | Dilution info - | Notes - |
Species | Dilution info | Notes |
---|---|---|
Species Human | Dilution info 1/1000 - 1/10000 | Notes - |
Species | Dilution info | Notes |
---|---|---|
Species Mouse | Dilution info - | Notes - |
Species | Dilution info | Notes |
---|---|---|
Species Human, Mouse | Dilution info - | Notes - |
Sialic-acid-binding immunoglobulin-like lectin (Siglec) that plays a role in mediating cell-cell interactions and in maintaining immune cells in a resting state (PubMed:10611343, PubMed:15597323, PubMed:11320212). Preferentially recognizes and binds alpha-2,3- and more avidly alpha-2,6-linked sialic acid-bearing glycans (PubMed:7718872). Upon engagement of ligands such as C1q or syalylated glycoproteins, two immunoreceptor tyrosine-based inhibitory motifs (ITIMs) located in CD33 cytoplasmic tail are phosphorylated by Src-like kinases such as LCK (PubMed:28325905, PubMed:10887109). These phosphorylations provide docking sites for the recruitment and activation of protein-tyrosine phosphatases PTPN6/SHP-1 and PTPN11/SHP-2 (PubMed:10556798, PubMed:10206955, PubMed:10887109). In turn, these phosphatases regulate downstream pathways through dephosphorylation of signaling molecules (PubMed:10206955, PubMed:10887109). One of the repressive effect of CD33 on monocyte activation requires phosphoinositide 3-kinase/PI3K (PubMed:15597323).
Myeloid cell surface antigen CD33, Sialic acid-binding Ig-like lectin 3, gp67, Siglec-3, SIGLEC3, CD33
Knockout Tested Rabbit Recombinant Monoclonal CD33 antibody. Suitable for IP, Flow Cyt, WB and reacts with Human samples. Cited in 3 publications.
Myeloid cell surface antigen CD33, Sialic acid-binding Ig-like lectin 3, gp67, Siglec-3, SIGLEC3, CD33
IgG
Rabbit
pH: 7.2 - 7.4
Preservative: 0.01% Sodium azide
Constituents: 59% PBS, 40% Glycerol (glycerin, glycerine), 0.05% BSA
Liquid
Monoclonal
The exact immunogen used to generate this antibody is proprietary information.
EPR4423
Affinity purification Protein A
1.76 x 10-11 M
Blue Ice
1-2 weeks
+4°C
-20°C
Upon delivery aliquot
Stable for 12 months at -20°C
Mouse, Rat: We have preliminary internal testing data to indicate this antibody may not react with these species. Please contact us for more information.
Our RabMAb® technology is a patented hybridoma-based technology for making rabbit monoclonal antibodies. For details on our patents, please refer to RabMAb® patents.
This product is a recombinant monoclonal antibody, which offers several advantages including:
For more information, read more on recombinant antibodies.
We have tested this species and application combination and it works. It is covered by our product promise.
We have not tested this specific species and application combination in-house, but expect it will work. It is covered by our product promise.
This species and application combination has not been tested, but we predict it will work based on strong homology. However, this combination is not covered by our product promise.
We do not recommend this combination. It is not covered by our product promise.
We are dedicated to supporting your work with high quality reagents and we are here for you every step of the way should you need us.
In the unlikely event of one of our products not working as expected, you are covered by our product promise.
Full details and terms and conditions can be found here:
Terms & Conditions.
Flow Cytometry analysis of Jurkat (Human T cell leukemia T lymphocyte, Left) / THP1 (Human monocytic leukemia monocyte, Right) labeling CD33 with ab134115 at 1/500 dilution (red). Goat anti rabbit IgG (Alexa Fluor® 647, ab150079) at 1/2000 dilution was used as the secondary antibody. Rabbit monoclonal IgG (ab172730) was used as isotype control (Black). Unlabelled control: Cell without incubation with primary antibody and secondary antibody (Blue).
Negative control: Jurkat.
Gated on viable cells.
ab134115 (purified) at 1/60 immunoprecipitating CD33 in 10 μg THP-1 (Lanes 1 and 2, observed at 67-75 kDa). Lane 3 - PBS. For western blotting, VeriBlot for IP Detection Reagent (HRP) (ab131366), was used for detection at 1/10,000 dilution. Blocking buffer and concentration: 5% NFDM/TBST Dilution buffer and concentration: 5% NFDM/TBST
All lanes: Immunoprecipitation - Anti-CD33 antibody [EPR4423] (AB134115)
Predicted band size: 40 kDa
Blocking buffer: 5% NFDM/TBST
Dilution buffer: 5% NFDM/TBST
All lanes: Western blot - Anti-CD33 antibody [EPR4423] (AB134115) at 1/5000 dilution
Lane 1: THP-1 cell lysate at 10 µg
Lane 2: U937 cell lysate at 10 µg
All lanes: HRP goat anti-rabbit IgG (H+L) at 1/20000 dilution
Predicted band size: 40 kDa
Observed band size: 67 kDa, 75 kDa
We have systematically measured KD (the equilibrium dissociation constant between the antibody and its antigen), of more than 840 recombinant antibodies to assess not only their individual KD values but also to see the average affinity of antibody.
Based on the comparison with published literature values for mouse monoclonal antibodies, Recombinant antibodies appear to be on average 1-2 order of magnitude higher affinity.
All lanes: Western blot - Anti-CD33 antibody [EPR4423] (AB134115) at 1/1000 dilution
Lane 1: THP1 cell lysate at 10 µg
Lane 2: U937 cell lysate at 10 µg
Lane 3: HL60 cell lysate at 10 µg
Lane 4: HepG2 cell lysate at 10 µg
Lane 5: HeLa cell lysate at 10 µg
All lanes: Goat anti-rabbit HRP conjugated antibody at 1/2000 dilution
Predicted band size: 40 kDa
Observed band size: 67-75 kDa
False colour image of Western blot: Anti-CD33 antibody [EPR4423] staining at 1/1000 dilution, shown in green; Mouse anti-Alpha Tubulin [DM1A] (ab7291) loading control staining at 1/20000 dilution, shown in red. In Western blot, ab134115 was shown to bind specifically to CD33. A band was observed at 60-80 kDa in wild-type THP-1 cell lysates with no signal observed at this size in CD33 knockout cell line ab273831 (knockout cell lysate ab273785). To generate this image, wild-type and CD33 knockout THP-1 cell lysates were analysed. First, samples were run on an SDS-PAGE gel then transferred onto a nitrocellulose membrane. Membranes were blocked in 3 % milk in TBS-0.1 % Tween® 20 (TBS-T) before incubation with primary antibodies overnight at 4 °C. Blots were washed four times in TBS-T, incubated with secondary antibodies for 1 h at room temperature, washed again four times then imaged. Secondary antibodies used were Goat anti-Rabbit IgG H&L 800CW and Goat anti-Mouse IgG H&L 680RD at 1/20000 dilution.
All lanes: Western blot - Anti-CD33 antibody [EPR4423] (AB134115) at 1/1000 dilution
Lane 1: Wild-type THP-1 cell lysate at 10 µg
Lane 3: HL-60 cell lysate at 10 µg
Lane 4: Jurkat cell lysate at 10 µg
All lanes: Goat anti-Rabbit IgG H&L 800CW and Goat anti-Mouse IgG H&L 680RD at 1/20000 dilution
Performed under reducing conditions.
Predicted band size: 40 kDa
Observed band size: 60-80 kDa
Please note: All products are 'FOR RESEARCH USE ONLY. NOT FOR USE IN DIAGNOSTIC OR THERAPEUTIC PROCEDURES'.
For licensing inquiries, please contact partnerships@abcam.com