Skip to Content
Merck
All Photos(1)

Key Documents

MABF412

Sigma-Aldrich

Anti-CD4 Antibody (mouse), FITC, clone GK1.5

clone GK1.5, 0.5 mg/mL, from rat

Synonym(s):

CD44 antigen, Extracellular matrix receptor III, ECMR-III, GP90 lymphocyte homing/adhesion receptor, HUTCH-I, Hermes antigen, Hyaluronate receptor, Lymphocyte antigen 24, Ly-24, Phagocytic glycoprotein 1, PGP-1, Phagocytic glycoprotein I, PGP-I, CD44

Sign Into View Organizational & Contract Pricing


About This Item

UNSPSC Code:
12352203
eCl@ss:
32160702
NACRES:
NA.44

biological source

rat

Quality Level

conjugate

FITC conjugate

antibody form

purified antibody

antibody product type

primary antibodies

clone

GK1.5, monoclonal

species reactivity

mouse

concentration

0.5 mg/mL

technique(s)

flow cytometry: suitable
immunohistochemistry: suitable
immunoprecipitation (IP): suitable

isotype

IgG2bκ

UniProt accession no.

shipped in

wet ice

target post-translational modification

unmodified

Gene Information

mouse ... Cd4(12504)

General description

The GK1.5 antibody reacts with mouse CD4, a 55 kDa protein which acts as a co-receptor for the T cell receptor (TCR) in its interaction with MHC Class II molecules on antigen-presenting cells. The extracellular domain of CD4 binds to the beta-2 domain of MHC Class II, while its cytoplasmic tail provides a binding site for the tyrosine kinase lck, facilitating the signaling cascade that initiates T cell activation. CD4 is typically expressed on thymocytes, certain mature T cell populations such as Th17 and T regulatory (Treg) cells, as well as on dendritic cells.The GK1.5 antibody is widely used as a phenotypic marker for CD4 expression. If used together, the GK1.5 antibody and an alternative antibody, Anti-Mouse CD4 clone RM4-5, will “compete” for binding, i.e. RM4-5 is able to block GK1.5 binding to cells. In contrast, the Anti-Mouse CD4 clone RM4-4 does not block binding of the GK1.5 antibody to cells (Arora S et al. 2006. Infect. Immun. 74: 4339-4348). The GK1.5 antibody is also reported to be cross-reactive with Syrian hamster CD4.

Immunogen

Immunogen information for this antibody is proprietary information.

Application

Research Category
Inflammation & Immunology
This Rat Monoclonal Antibody Anti-CD4 (mouse), FITC, clone GK1.5, Cat. No. MABF412 is validated for use in IP, IHC, FC for the detection of CD4.

Physical form

Purified Rat Monoclonal Antibody in buffer containing 10 mM NaH2PO4, 150 mM NaCl, 0.1% gelatin, pH 7.2, and up to 0.1% sodium azide.
Size Exclusion Chromatography

Storage and Stability

It is recommended to store the product undiluted at 2-8°C and protected from prolonged exposure to light. Do not freeze.

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.

Not finding the right product?  

Try our Product Selector Tool.

Storage Class Code

12 - Non Combustible Liquids

WGK

nwg

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’.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

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

Contact Technical Service