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Invitrogen
CD8a Monoclonal Antibody (RPA-T8), eVolve™ 605, eBioscience™
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Product Details
83-0088-41
Applications
Tested Dilution
Publications
Product Specifications
Published species
Human,
Rhesus monkey
Host/Isotype
Mouse
/ IgG1, kappa
Class
Monoclonal
Type
Antibody
Clone
RPA-T8
Conjugate
Form
Liquid
Concentration
5 µL/Test
Storage conditions
4°C, store in dark, DO NOT FREEZE!
Shipping conditions
Wet ice
RRID
Product Specific Information
Notice: The eVolve™ line of antibody conjugates will be discontinued at the end of February, 2018 and replaced with our improved Invitrogen™ eBioscience™ Super Bright conjugated antibodies for flow cytometry. Individual eVovle catalog numbers will become unavailable as inventory depletes. This item has a corresponding Super Bright 600 format available - please see Product # 63-0088-42. We will continue to offer a selection of Qdot conjugated antibodies.
Description: The RPA-T8 monoclonal antibody reacts with the human CD8a molecule, 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 T cells and NK cells express CD8a. 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.
Applications Reported: This RPA-T8 antibody has been reported for use in flow cytometric analysis.
Applications Tested: This RPA-T8 antibody has been pre-titrated and tested by flow cytometric analysis of normal human peripheral blood cells. This can be used at 5 µL per test. A test is defined as the amount of antibody that will stain a cell sample in a final volume of 100 µL. Cell number should be determined empirically but can range from 10^5 to 10^8 cells/test.
For best results when using antibodies conjugated to eVolve™, we recommend a quick spin of the vial before use and avoid touching the bottom of the vial with the pipet tip.
Laser/Filter Recommendation: eVolve™ 605 can be optimally excited with laser lines from 325-405 nm, and emits near 610 nm. We recommend using the violet (405 nm) laser line for excitation and a 595LP with a 605/40 or 610/20 bandpass filter, or equivalent, for detection.
Fixation Recommendation: Antibodies conjugated to eVolve™ are compatible with eBioscience's fixation and permeabilization buffers.
Excitation: 350-590 nm; Emission: 605 nm; Laser: Ultraviolet Laser, Violet Laser
Storage and handling: For best results when using antibodies conjugated to eVolve™, we recommend a quick spin of the vial before use and avoid touching the bottom of the vial with the pipet tip.
Target Information
CD8, also known as cluster of differentiation 8, is a type I transmembrane glycoprotein of the immunoglobulin family that plays a crucial role in T cell differentiation, activation, and signal transduction. It is expressed as either a heterodimer (CD8 alpha beta) or a homodimer (CD8 alpha alpha). The CD8 alpha beta form is predominantly found on the majority of thymocytes and a subpopulation of mature alpha beta TCR T cells, while the CD8 alpha alpha form is expressed on gamma delta TCR T cells, a subset of intestinal intraepithelial lymphocytes (IELs), and dendritic cells. CD8 functions as a co-receptor for major histocompatibility complex class I (MHC-I) molecules, working alongside the T cell receptor (TCR). The CD8 alpha 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 CD8 alpha. Upon ligation of MHC-I/peptide complexes presented by antigen-presenting cells (APCs), CD8 recruits lymphocyte-specific protein tyrosine kinase (Lck), leading to lymphokine production, increased motility, and activation of cytotoxic T lymphocytes (CTLs). Activated CTLs are vital for clearing pathogens and tumor cells. The differentiation of naive CD8+ T cells into CTLs is strongly enhanced by cytokines such as IL-2, IL-12, and TGF-beta1. Through its interactions with MHC-I and association with protein tyrosine kinase p56lck, CD8 plays a significant role in T cell development and the activation of mature T cells.
For Research Use Only. Not for use in diagnostic procedures. Not for resale without express authorization.
Disclaimer
Clicking the images or links will redirect you to a website hosted by BenchSci that provides third-party scientific content. Neither the content nor the BenchSci technology and processes for selection have been evaluated by us; we are providing them as-is and without warranty of any kind, including for use or application of the Thermo Fisher Scientific products presented.
Performance Guarantee
If an Invitrogen™ antibody doesn't perform as described on our website or datasheet,we'll replace the product at no cost to you, or provide you with a credit for a future purchase.*
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