Mouse Monoclonal HLA-DRA antibody - conjugated to Alexa Fluor® 647. Suitable for Flow Cyt (Intra), ICC/IF, IHC-Fr and reacts with Human samples. Cited in 2 publications.
IgG1
Mouse
Alexa Fluor® 647
Ex: 650nm, Em: 665nm
pH: 7.4
Preservative: 0.02% Sodium azide
Constituents: PBS, 30% Glycerol (glycerin, glycerine), 1% BSA
Liquid
Monoclonal
Flow Cyt (Intra) | ICC/IF | IHC-Fr | |
---|---|---|---|
Human | Tested | Tested | Tested |
Species | Dilution info | Notes |
---|---|---|
Species Human | Dilution info 1/50000 | Notes - |
Species | Dilution info | Notes |
---|---|---|
Species Human | Dilution info 1/1000 | Notes This product gave a positive signal in Raji cells fixed with 4% formaldehyde (10 min) |
Species | Dilution info | Notes |
---|---|---|
Species Human | Dilution info 1/1000 | Notes - |
Select an associated product type
An alpha chain of antigen-presenting major histocompatibility complex class II (MHCII) molecule. In complex with the beta chain HLA-DRB, displays antigenic peptides on professional antigen presenting cells (APCs) for recognition by alpha-beta T cell receptor (TCR) on HLA-DR-restricted CD4-positive T cells. This guides antigen-specific T-helper effector functions, both antibody-mediated immune response and macrophage activation, to ultimately eliminate the infectious agents and transformed cells (PubMed:15265931, PubMed:15322540, PubMed:17334368, PubMed:22327072, PubMed:24190431, PubMed:27591323, PubMed:29884618, PubMed:31495665, PubMed:8145819, PubMed:9075930). Typically presents extracellular peptide antigens of 10 to 30 amino acids that arise from proteolysis of endocytosed antigens in lysosomes (PubMed:8145819). In the tumor microenvironment, presents antigenic peptides that are primarily generated in tumor-resident APCs likely via phagocytosis of apoptotic tumor cells or macropinocytosis of secreted tumor proteins (PubMed:31495665). Presents peptides derived from intracellular proteins that are trapped in autolysosomes after macroautophagy, a mechanism especially relevant for T cell selection in the thymus and central immune tolerance (PubMed:17182262, PubMed:23783831). The selection of the immunodominant epitopes follows two processing modes: 'bind first, cut/trim later' for pathogen-derived antigenic peptides and 'cut first, bind later' for autoantigens/self-peptides (PubMed:25413013). The anchor residue at position 1 of the peptide N-terminus, usually a large hydrophobic residue, is essential for high affinity interaction with MHCII molecules (PubMed:8145819).
HLA-DRA1, HLA-DRA, HLA-DRA1, MHC class II antigen DRA
Mouse Monoclonal HLA-DRA antibody - conjugated to Alexa Fluor® 647. Suitable for Flow Cyt (Intra), ICC/IF, IHC-Fr and reacts with Human samples. Cited in 2 publications.
IgG1
Mouse
Alexa Fluor® 647
Ex: 650nm, Em: 665nm
pH: 7.4
Preservative: 0.02% Sodium azide
Constituents: PBS, 30% Glycerol (glycerin, glycerine), 1% BSA
Liquid
Monoclonal
TAL 1B5
Affinity purification Protein G
kappa
Blue Ice
1-2 weeks
+4°C
-20°C
Upon delivery aliquot
Avoid freeze / thaw cycle, Store in the dark
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Overlay histogram showing Raji cells stained with ab223907 (red line). The cells were fixed with 4% formaldehyde (10 min) and then permeabilized with 0.1% PBS-Triton X-100 for 15 min. The cells were then incubated in 1x PBS / 10% normal goat serum to block non-specific protein-protein interactions followed by the antibody (ab223907, 1/50000 dilution) for 30 min at 22°C.
Isotype control antibody (black line) was Mouse IgG1 (monoclonal) Alexa Fluor® 647 used at the same concentration and conditions as the primary antibody. Unlabelled sample (blue line) was also used as a control.
Acquisition of >5,000 events were collected using a 40 mW Red laser (640nm) and 670/14 bandpass filter.
IHC image of HLA DR staining in a section of frozen normal human tonsil*.
The section was fixed using 10% formaldehyde in 1XPBS for 10 minutes. No antigen retrieval step was performed prior to staining. Non-specific protein-protein interactions were then blocked in TBS containing 0.025% (v/v) Triton X-100, 0.3M (w/v) glycine and 1% (w/v) BSA for 1h at room temperature. The section was then incubated overnight at +4°C in TBS containing 0.025% (v/v) Triton X-100 and 1% (w/v) BSA with ab223907 at 1/1000 dilution (shown in red) and counterstained using Alexa Fluor® 488 Anti-alpha Tubulin antibody [DM1A] - Microtubule Marker ab195887, Mouse monoclonal to alpha Tubulin (Alexa Fluor® 488), at 1/250 dilution (shown in green). Nuclear DNA was labelled with DAPI (shown in blue). The section was then mounted using Fluoromount®.
Image was taken with a confocal microscope (Leica-Microsystems, TCS SP8).
For other IHC staining systems (automated and non-automated), customers should optimize variable parameters such as antigen retrieval conditions, antibody concentrations and incubation times.
*Tissue obtained from the Human Research Tissue Bank, supported by the NIHR Cambridge Biomedical Research Centre.
ab223907 staining HLA DR in Raji cells. The cells were fixed with 4% formaldehyde (10 min) and then incubated in 1% BSA/10% normal goat serum/0.3M glycine in 0.1% PBS-Tween for 1h to permeabilize the cells and block non-specific protein-protein interactions. The cells were then incubated overnight at +4°C with ab223907 at 1/1000 dilution (shown in red) and Alexa Fluor® 488 Anti-alpha Tubulin antibody [DM1A] - Microtubule Marker ab195887, Mouse monoclonal to alpha Tubulin (Alexa Fluor® 488), at 1/250 dilution (shown in green). Nuclear DNA was labelled with DAPI (shown in blue).
Image was taken with a confocal microscope (Leica-Microsystems, TCS SP8).
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