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CD4 Antibody (H001T03R04-A) in Flow
Normal human PBMCs were either left unstained (blue histogram) or stained with CD4 Monoclonal Antibody, NovaFluor Red 710 (purple histogram) and acquired in the R4 channel on a 5-laser Cytek Aurora. Cells in the lymphocyte gate were used in the analysis.
Product Details
H001T03R04-A
Product Specifications
Species Reactivity
Human
Host/Isotype
Mouse
/ IgG1, kappa
Class
Monoclonal
Type
Antibody
Clone
SK3 (SK-3)
Conjugate
Excitation/Emission Max
637/713 nm
View spectra
Form
Liquid
Concentration
2 µL/Test
Purification
Affinity chromatography
Storage buffer
PBS, pH 7.2
Contains
0.09% sodium azide
Storage conditions
4°C, store in dark, DO NOT FREEZE!
RRID
AB_3097890 (AB_2896387)
Product Specific Information
Description
The SK3 monoclonal antibody reacts with human CD4, a 59-kDa cell surface receptor expressed by a majority of thymocytes, a subpopulation of mature T helper cells, and at low levels on monocytes. CD4 is a receptor for the human immunodeficiency virus (HIV). SK3 blocks HIV binding and mixed lymphocyte reaction. The SK3 and RPA-T4 monoclonal antibodies do not cross-block binding, suggesting recognition of distinct epitopes.
This product contains 1 vial of NovaFluor conjugate and 1 vial of CellBlox Plus Blocking Buffer.
Applications Tested
This SK3 (SK-3) antibody has been pre-titrated and tested by flow cytometric analysis of normal human peripheral blood cells. This can be used at 5 µL (0.1 µg) per test. A test is defined as the amount (µg) 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.
Master mixes
• Master mixes of NFs should be made at 2-8 °C and may be made up to 4 hours ahead of time.
• We do not recommend storing master mixes containing NovaFluor conjugates overnight or longer.
Whole Blood compatibility
• When utilizing whole blood (as opposed to density-gradient-purified PBMC), we recommend lysing red blood cells in bulk prior to staining with NovaFluor conjugates.
• See the Bulk Lysis of Human Whole Blood protocol here.
• Staining of whole blood with NovaFluor conjugates followed by lysis of red blood cells may result in higher-than-expected background staining.
Viability dye compatibility
• NovaFluor dyes are not compatible with DNA intercalating viability dyes.
• Do not use viability dyes such as propidium iodide, 7-actinomycin D (7-AAD) and DAPI. Invitrogen LIVE/DEAD Fixable Dead Cell stains are recommended for use with NovaFluor dyes.
CellBlox Plus Blocking Buffer
• This NovaFluor conjugate comes with CellBlox Plus Blocking Buffer (Cat. No. C001T03F01), essential for optimal staining.
• Use CellBlox Plus Blocking Buffer in all experiments with NovaFluor conjugates.
• Add 5 μL per sample to antibody cocktails/master mixes (regardless of how many Novafluor-conjugated antibodies are present) before combining with cells.
• CellBlox Plus Blocking Buffer is compatible with either Super Bright Complete Blocking Buffer or Brilliant Stain Buffer and can be used in antibody cocktails/master mixes with those reagents.
• For single-color controls, use 5 μL of CellBlox Plus Blocking Buffer per 100 μL of cell sample (10^3 to 10^8 cells).
NovaFluor conjugates are based on Phiton technology utilizing novel fluorophore-containing nucleic acid dye structures that allow for engineered fluorescent signatures with consideration for spillover and spread impacts. Learn more
Excitation: 637 nm; Emission: 713 nm; Laser: 633-640 nm (Red) Laser
Target Information
The CD4 antigen is involved in the recognition of MHC class II molecules and is a co-receptor for HIV. CD4 is primarily expressed in a subset of T-lymphocytes, also referred to as T helper cells, but may also be expressed by other cells in the immune system, such as monocytes, macrophages, and dendritic cells. At the tissue level, CD4 expression may be detected in thymus, lymph nodes, tonsils, and spleen, and also in specific regions of the brain, gut, and other non-lymphoid tissues. CD4 functions to initiate or augment the early phase of T-cell activation through its association with the T-cell receptor complex and protein tyrosine kinase, Lck. It may also function as an important mediator of direct neuronal damage in infectious and immune-mediated diseases of the central nervous system. Multiple alternatively spliced transcripts have been identified in this gene [RefSeq, July 2017].
For Research Use Only. Not for use in diagnostic procedures. Not for resale without express authorization.
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Bioinformatics
Protein Aliases: CD4; CD4 antigen (p55); CD4 antigen p55; CD4 receptor; cd4a; fCD4; Leu-3; T-cell surface antigen T4/Leu-3; T-cell surface glycoprotein CD4
Gene Aliases: CD4; CD4mut
UniProt ID: (Human) P01730
Entrez Gene ID: (Human) 920
virus receptor activity
glycoprotein binding
receptor activity
transmembrane signaling receptor activity
extracellular matrix structural constituent
protein binding
zinc ion binding
coreceptor activity
immunoglobulin binding
enzyme binding
protein kinase binding
MHC class II protein binding
protein homodimerization activity
protein tyrosine kinase binding
cytokine production
adaptive immune response
induction by virus of host cell-cell fusion
immune response
signal transduction
cell surface receptor signaling pathway
enzyme linked receptor protein signaling pathway
transmembrane receptor protein tyrosine kinase signaling pathway
positive regulation of calcium ion transport into cytosol
fusion of virus membrane with host plasma membrane
T cell differentiation
entry into host cell
T cell costimulation
response to estradiol
maintenance of protein location in cell
response to vitamin D
helper T cell enhancement of adaptive immune response
positive regulation of T cell proliferation
T cell selection
positive regulation of interleukin-2 biosynthetic process
positive regulation of protein kinase activity
regulation of defense response to virus by virus
positive regulation of peptidyl-tyrosine phosphorylation
defense response to Gram-negative bacterium
positive regulation of calcium-mediated signaling
T cell receptor signaling pathway
regulation of T cell activation
Performance Guarantee
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