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CD3e Monoclonal Mouse Antibody (OKT3)

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Product Attributes

Antibody number

#0268

Antibody reactivity (target)

CD3e

Antibody type

Primary

Host species

Mouse

Clonality

Monoclonal

Clone

OKT3

Isotype

IgG2a, kappa

Molecular weight

23 kDa

Synonyms

CD3 epsilon; CD3 TCR complex; CD3e antigen epsilon polypeptide (TiT3 complex); T cell antigen receptor complex epsilon subunit of T3; T-cell surface antigen T3/Leu-4 epsilon chain; T-cell surface glycoprotein CD3 epsilon chain; T3E

Human gene symbol

CD3E

Entrez gene ID

916

SwissProt

P07766

Unigene

3003

Immunogen

Human PBMCs

Verified antibody applications

Flow (surface) (verified), IF (verified)

Antibody target cellular localization

Plasma membrane

Species reactivity

Human

Expected antibody applications

IHC (frozen) (published for clone), Functional studies (published for clone), IP (published for clone)

Positive control

Jurkat cells. Tonsil and lymph node

Shipping condition

Room temperature

Storage Conditions

Note: store BSA-free antibodies at -10 to -35°C, Store at 2 to 8 °C, Protect fluorescent conjugates from light

Regulatory status

For research use only (RUO)

Antibody/conjugate formulation

Conjugates: 0.1 mg/mL in PBS/0.1% BSA/0.05% azide, HRP conjugates: 0.1 mg/mL in PBS/0.05% BSA, Purified: 0.2 mg/mL in PBS/0.05% BSA/0.05% azide, Purified, BSA-free: 1 mg/mL in PBS without azide

Shelf life

Guaranteed for at least 24 months from date of receipt when stored as recommended

Cell/tissue expression

T-cells

Tumor expression

Leukemia/lymphoma

Conjugation
Don’t see what you’re looking for? Contact us for more conjugation options.
Note: Please be advised that primary antibodies with catalog numbers that begin with “BN” will only be offered conjugated to CF®405S, CF®488A, CF®568, CF®594, CF®640R, CF®647, and biotin as of 5/27/2022. However, previously available primary antibody conjugates that are in stock will remain available until inventory is exhausted. Please view the list of available conjugates on the product page. We also recommend our easy-to-use Mix-n-StainTM Antibody Labeling Kits for labeling antibodies with all CF® Dyes. We apologize for the inconvenience.
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Product Description

Recognizes the epsilon-chain of CD3, which consists of five different polypeptide chains (designated as gamma, delta, epsilon, zeta, and eta) with MW ranging from 16-28 kDa. CD3, also known as T3, is a member of the immunoglobulin superfamily that plays a role in antigen recognition, signal transduction, and T cell activation. It is found on all mature T-lymphocytes, NK, T-cells, and some thymocytes, and is expressed, typically at high levels, on peripheral T cells and majority of T cell neoplasms. Thymocytes express CD3 at different level on the cell surface in the course of differentiation and CD3 is predominantly intracytoplasmic in cortical thymus.

Anti-CD3 clone OKT3 has been reported to have potent immunosuppressive properties in vivo and has been proven effective in the treatment of renal, heart and liver allograft rejection. In the crystal structure of the antibody-receptor complex, clone OKT3 was found to bind a conformational epitope on CD3e dominated by a linear stretch in the F-G loop of the subunit.

Primary antibodies are available purified, or with a selection of fluorescent CF® dyes and other labels. CF® dyes offer exceptional brightness and photostability. See the CF® Dye Brochure for more information. Note: Conjugates of blue fluorescent dyes like CF®405S and CF®405M are not recommended for detecting low abundance targets, because blue dyes have lower fluorescence and can give higher non-specific background than other dye colors.

Stock status: Because Biotium offers a large number of antibody and conjugation options, primary antibody conjugates may be made to order. Typical lead times are up to one week for CF® dye and biotin conjugates, and up to 2-3 weeks for fluorescent protein and enzyme conjugates. Please email order@biotium.com to inquire about stock status and lead times before placing your order.

Catalog Number Key for Primary Antibody Conjugates

Antibody # prefixConjugationEx/Em (nm)Laser lineDetection channelDye Features
BNC04CF®405S404/431405DAPI (microscopy), AF405CF®405S Features
BNC88CF®488A490/515488GFP, FITCCF®488A Features
BNC68CF®568562/583532, 561RFP, TRITCCF®568 Features
BNC94CF®594593/614561Texas Red®CF®594 Features
BNC40CF®640R642/662633-640Cy®5CF®640R Features
BNC47CF®647650/665633-640Cy®5CF®647 Features
BNCBBiotinN/AN/AN/A
BNUBPurifiedN/AN/AN/A
BNUMPurified,
BSA-free
N/AN/AN/A
Alexa Fluor, Pacific Blue, Pacific Orange, and Texas Red are trademarks or registered trademarks of Thermo Fisher Scientific; Cy is a registered trademark of Cytiva; IRDye, LI-COR, and Odyssey are registered trademarks of LI-COR Bioscience.

References

Note: References for this clone sold by other suppliers may be listed for expected applications.

  1. J Cell Biol (1992) 267(17): 11685-11688. (immunoprecipitation)
  2. PNAS USA (2004) 101(20): 7675-7680. (crystal structure of antibody/antigen complex)
  3. J Immunol (2005) 174:3773-3780. (IHC, frozen)
  4. Blood (2011) 117: 5463-5472. (in vivo cell depletion)
  5. J Immunol (2012) 188:5538-5546. (functional studies)
 

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