DESCRIPTION

The RPA-T4 monoclonal antibody specifically binds to CD4, a 59 kDa single-chain transmembrane glycoprotein that is expressed on T-helper/inducer cell populations. CD4 is also expressed on thymocytes subsets and at lower levels on monocytes and macrophages. CD4 functions as a co-receptor in MHC class II-restricted antigen-induced T cell activation and as a receptor for human immunodeficiency viruses (HIV). This antibody binds to the D1 domain (CDR1 and CDR3 epitopes) of the CD4 antigen and reacts with approximay 80% of thymocytes and 45% of peripheral blood lymphocytes. RPA-T4 is capable of blocking HIV-1, gp120, and inhibits syncytium formation.

This antibody is routinely tested by flow cytometric analysis. Other applications were tested at BD Biosciences Pharmingen during antibody development or are reported in the literature.

FORMAT

Format

Excitation Source

Blue 488 nm,Green 532 nm,Yellow/Green 561 nm

Excitation Max

496 nm

Emission Max

578 nm

R-phycoerythrin (PE) is an accessory photosynthetic pigment found in red algae. It exists in vitro as a 240-kDa protein with 23 phycoerythrobilin chromophores per molecule. This makes PE one of the brightest fluorochromes for flow cytometry applications, but its photobleaching properties make it unsuitable for fluorescence microscopy.

Other Formats →

APC
APC-Cy™7
APC-H7
APC-R700
Alexa Fluor® 488

Alexa Fluor® 647
Alexa Fluor® 700
BB515
BUV395
BV421

BV605
Biotin
FITC
NA/LE
PE-CF594

PE-Cy™5
PE-Cy™7
Pacific Blue™
PerCP-Cy™5.5
Purified

SUGGESTED COMPANION PRODUCTS

Cat No.	Description	Size
555749	PE Mouse IgG1, κ Isotype Control RUO	100 Tests

RESOURCES & TOOLS

Spectrum Viewer
Panel Designer

Download TDS

PREPARATION AND STORAGE

The monoclonal antibody was purified from tissue culture supernatant or ascites by affinity chromatography. The antibody was conjugated with R-PE under optimum conditions, and unconjugated antibody and free PE were removed. Store undiluted at 4°C and protected from prolonged exposure to light. Do not freeze.

PRODUCT NOTICES

This reagent has been pre-diluted for use at the recommended Volume per Test. We typically use 1 × 10^6 cells in a 100-µl experimental sample (a test).
Since applications vary, each investigator should titrate the reagent to obtain optimal results.
Please refer to www.bdbiosciences。。ｃｏｍ/pharmingen/protocols for technical protocols.
For fluorochrome spectra and suitable instrument settings, please refer to our Multicolor Flow Cytometry web page at www.bdbiosciences。。ｃｏｍ/colors.
Caution: Sodium azide yields highly toxic hydrazoic acid under acidic conditions. Dilute azide compounds in running water before discarding to avoid accumulation of potentially explosive deposits in plumbing.
Source of all serum proteins is from USDA inspected abattoirs located in the United States.