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Key Documents

SAB4700040

Sigma-Aldrich

Monoclonal Anti-CD3 antibody produced in mouse

clone OKT3, purified immunoglobulin, buffered aqueous solution

Synonym(s):

Mouse Anti-T-cell surface antigen T3/Leu-4 epsilon chain, Mouse Monoclonal Anti-T3E

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About This Item

UNSPSC Code:
12352203
NACRES:
NA.41

biological source

mouse

conjugate

unconjugated

antibody form

purified immunoglobulin

antibody product type

primary antibodies

clone

OKT3, monoclonal

form

buffered aqueous solution

species reactivity

human

concentration

1 mg/mL

technique(s)

flow cytometry: suitable

isotype

IgG2a

NCBI accession no.

shipped in

wet ice

storage temp.

2-8°C

target post-translational modification

unmodified

Gene Information

human ... CD3(916)

General description

The CD3 gene is mapped to human chromosome 11q23.3. The encoded protein exists in three isoforms, CD3ε, CD3γ and CD3δ and each contains an N-terminal extracellular domain, a transmembrane segment and a cytoplasmic domain. CD3 is a 20kDa glycoprotein expressed on surface of all human T lymphocytes.
The mouse monoclonal antibody OKT3 recognizes the CD3 antigen of the TCR/CD3 complex on mature human T cells. This antibody, also known as Orthoclone OKT3 or Muromonab-CD3, has been extensively used as a drug for therapy of acute, glucocorticoid resistant rejection of allogenic renal, heart and liver transplants. It has also been investigated for use in treating T-cell acute lymphoblastic leukemia.

Application

Monoclonal Anti-CD3 antibody produced in mouse has been used in proliferation assay.
The reagent is designed for Flow Cytometry analysis. Suggested working dilution is 1 μg/mL of sample. Indicated dilution is recommended starting point for use of this product. Working concentrations should be determined by the investigator.

Biochem/physiol Actions

T-cell receptor-CD3 complex including CD3ε, CD3γ and CD3δ, plays a vital role in inducing early metabolic events that lead to T cell activation. Mutation in the CD3ε has been observed in T-B+ NK+ severe combined immunodeficiency (SCID) patients.

Features and Benefits

Evaluate our antibodies with complete peace of mind. If the antibody does not perform in your application, we will issue a full credit or replacement antibody. Learn more.

Physical form

Solution in phosphate buffered saline, pH 7.4, with 15 mM sodium azide.

Disclaimer

Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.

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Storage Class Code

10 - Combustible liquids

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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The T cell receptor/CD3 complex: a dynamic protein ensemble.
Clevers H
Annual Review of Immunology, 629-662 (1988)
Myeloid-derived suppressor cells suppress CD4+ and CD8+ T cell responses in autoimmune hepatitis
Li H
Molecular Medicine Reports, 12, 3667-3673 (2015)
Stephanie M Stanford et al.
Immunology, 137(1), 1-19 (2012-08-07)
More than half of the known protein tyrosine phosphatases (PTPs) in the human genome are expressed in T cells, and significant progress has been made in elucidating the biology of these enzymes in T-cell development and function. Here we provide
Reem Berro et al.
Journal of virology, 85(16), 8227-8240 (2011-06-18)
Resistance to small-molecule CCR5 inhibitors arises when HIV-1 variants acquire the ability to use inhibitor-bound CCR5 while still recognizing free CCR5. Two isolates, CC101.19 and D1/85.16, became resistant via four substitutions in the gp120 V3 region and three in the
Haiwen Li et al.
Molecular medicine reports, 12(3), 3667-3673 (2015-05-23)
Myeloid-derived suppressor cells (MDSCs) have been demonstrated with possess the ability to suppress T‑cell responses. Therefore, MDSCs are an attractive candidate for immune intervention aimed at reconstituting self‑tolerance in autoimmune conditions. The present study investigated the frequency and function of

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