Thermo Fisher Scientific CD8a Monoclonal Antibody (4SM16), eBioscience

Applications

Tested Dilution

Publications

Immunohistochemistry (IHC)

-

View 11 publications 11 publications

Immunohistochemistry (Paraffin) (IHC (P))

5 µg/mL

View 3 publications 3 publications

Immunohistochemistry (PFA fixed) (IHC (PFA))

-

View 1 publication 1 publication

Immunohistochemistry (Frozen) (IHC (F))

5 µg/mL

-

Product Specifications

Species Reactivity

Mouse

Published species

Human, Mouse

Host/Isotype

Rat / IgG2a, kappa

Class

Monoclonal

Type

Antibody

Clone

4SM16

Immunogen

Fragment of extracellular domain

Conjugate

Unconjugated Unconjugated Unconjugated

Form

Liquid

Concentration

0.5 mg/mL

Purification

Affinity chromatography

Storage buffer

PBS, pH 7.2

Contains

0.09% sodium azide

Storage conditions

4° C

Shipping conditions

Ambient (domestic); Wet ice (international)

RRID

AB_2864836

Product Specific Information

Description: The 4SM16 monoclonal antibody reacts with the mouse CD8a molecule. CD8a is an approximately 32-34 kDa cell surface receptor expressed either as a heterodimer with the CD8 beta chain (CD8 alpha beta) or as a homodimer (CD8 alpha alpha). A majority of thymocytes and a subpopulation of mature alpha beta TCR T cells express CD8 alpha beta while gamma delta TCR T cells, a subpopulation of intestinal intraepithelial lymphocytes (IELs) and dendritic cells express CD8 alpha alpha. CD8 binds to MHC class I and through its association with protein tyrosine kinase p56lck plays a role in T cell development and activation of mature T cells.

The 4SM16 monoclonal antibody is recommended for immunohistochemistry of formalin-fixed paraffin embedded (FFPE) or frozen mouse tissue and can be used for staining of mouse neural tissue. For additional information please contact our technical service (tech@eBioscience.com).

Applications Reported: This 4SM16 antibody has been reported for use in microscopy, immunohistochemical staining of frozen and formalin-fixed paraffin embedded (FFPE) tissue sections.

Applications Tested: This 4SM16 antibody has been tested by immunohistochemistry of formalin-fixed paraffin embedded mouse tissue using low or high pH antigen retrieval and can be used at less than or equal to 5 µg/mL. This 4SM16 antibody has been tested by immunohistochemical staining of frozen mouse tissue and can be used at less than or equal to 5 µg/mL. It is recommended that the antibody be carefully titrated for optimal performance in the assay of interest.

Purity: Greater than 90%, as determined by SDS-PAGE.

Aggregation: Less than 10%, as determined by HPLC.

Filtration: 0.2 µm post-manufacturing filtered.

Target Information

Cluster of differentiation 8 (CD8), a type I transmembrane glycoprotein of the immunoglobulin family of receptors, plays an integral role in signal transduction, and T cell differentiation and activation. CD8 is predominantly expressed on T cells as a disulfide-linked heterodimer of CD8alpha and CD8beta, where it functions as a co-receptor, along with T cell receptor (TCR), for major histocompatibilty complex class I (MHC-I) molecules; whereas its counterpart, CD4, acts as a co-receptor for MHC-II molecules. CD8 exists on the cell surface, where the CD8alpha chain is essential for binding to MHC-I. CD8 is also expressed on a subset of T cells, NK cells, monocytes and dendritic cells as disulfide-linked homodimers of CD8alpha. Ligation of MHC-I/peptide complexes presented by antigen-presenting cells (APCs), triggers the recruitment of lymphocyte-specific protein tyrosine kinase (Lck), which leads to lymphokine production, motility and cytotoxic T lymphocyte (CTL) activation. Once activated, CTLs play a crucial role in the clearance of pathogens and tumor cells. Differentiation of naive CD8+ T cells into CTLs is strongly enhanced by IL-2, IL-12 and TGF-beta1.

For Research Use Only. Not for use in diagnostic procedures. Not for resale without express authorization.