Recombinant Anti-HLA-DR antibody [HLA-Pan/2967R] - BSA and Azide free (ab259258)
Key features and details
- Produced recombinantly (animal-free) for high batch-to-batch consistency and long term security of supply
- Rabbit monoclonal [HLA-Pan/2967R] to HLA-DR - BSA and Azide free
- Suitable for: Protein Array, Flow Cyt, ICC/IF, IHC-P
- Reacts with: Human
Related conjugates and formulations
Overview
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Product name
Anti-HLA-DR antibody [HLA-Pan/2967R] - BSA and Azide free
See all HLA-DR primary antibodies -
Description
Rabbit monoclonal [HLA-Pan/2967R] to HLA-DR - BSA and Azide free -
Host species
Rabbit -
Tested applications
Suitable for: Protein Array, Flow Cyt, ICC/IF, IHC-Pmore details -
Species reactivity
Reacts with: Human -
Immunogen
Tissue, cells or virus corresponding to Human HLA-DR. Non-T, non-B human acute lymphoblastic leukemia REH6 cell line. Uniprot Accession: P04440; P01908; P01909; P01920; P01903.
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Positive control
- ICC/IF: Raji and Ramos cells; Flow Cyt: Raji cells; IHC-P: Human tonsil tissue; WB: Ramos cell lysate.
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General notes
ab259258 is the carrier-free version of ab257320.
Our carrier-free antibodies are typically supplied in a PBS-only formulation, purified and free of BSA, sodium azide and glycerol. The carrier-free buffer and high concentration allow for increased conjugation efficiency.
This conjugation-ready format is designed for use with fluorochromes, metal isotopes, oligonucleotides, and enzymes, which makes them ideal for antibody labelling, functional and cell-based assays, flow-based assays (e.g. mass cytometry) and Multiplex Imaging applications.
Use our conjugation kits for antibody conjugates that are ready-to-use in as little as 20 minutes with <1 minute hands-on-time and 100% antibody recovery: available for fluorescent dyes, HRP, biotin and gold.
Properties
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Form
Liquid -
Storage instructions
Shipped at 4°C. Store at +4°C short term (1-2 weeks). Upon delivery aliquot. Store at -20°C long term. Avoid freeze / thaw cycle. -
Storage buffer
pH: 7.2
Constituent: PBS -
Carrier free
Yes -
Concentration information loading...
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Purity
Protein A/G purified -
Purification notes
Purified from Bioreactor Concentrate. -
Clonality
Monoclonal -
Clone number
HLA-Pan/2967R -
Isotype
IgG -
Research areas
Associated products
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Alternative Versions
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Recombinant Protein
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Related Products
Applications
The Abpromise guarantee
Our Abpromise guarantee covers the use of ab259258 in the following tested applications.
The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.
Application | Abreviews | Notes |
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Protein Array |
Use at an assay dependent concentration.
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Flow Cyt |
Use 1-2µg for 106 cells.
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ICC/IF |
Use a concentration of 1 - 2 µg/ml.
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IHC-P |
Use a concentration of 1 - 2 µg/ml. Perform heat mediated antigen retrieval with citrate buffer pH 6 before commencing with IHC staining protocol.
30 minutes at RT |
Notes |
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Protein Array
Use at an assay dependent concentration. |
Flow Cyt
Use 1-2µg for 106 cells. |
ICC/IF
Use a concentration of 1 - 2 µg/ml. |
IHC-P
Use a concentration of 1 - 2 µg/ml. Perform heat mediated antigen retrieval with citrate buffer pH 6 before commencing with IHC staining protocol. 30 minutes at RT |
Target
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Function
Binds peptides derived from antigens that access the endocytic route of antigen presenting cells (APC) and presents them on the cell surface for recognition by the CD4 T-cells. The peptide binding cleft accommodates peptides of 10-30 residues. The peptides presented by MHC class II molecules are generated mostly by degradation of proteins that access the endocytic route, where they are processed by lysosomal proteases and other hydrolases. Exogenous antigens that have been endocytosed by the APC are thus readily available for presentation via MHC II molecules, and for this reason this antigen presentation pathway is usually referred to as exogenous. As membrane proteins on their way to degradation in lysosomes as part of their normal turn-over are also contained in the endosomal/lysosomal compartments, exogenous antigens must compete with those derived from endogenous components. Autophagy is also a source of endogenous peptides, autophagosomes constitutively fuse with MHC class II loading compartments. In addition to APCs, other cells of the gastrointestinal tract, such as epithelial cells, express MHC class II molecules and CD74 and act as APCs, which is an unusual trait of the GI tract. To produce a MHC class II molecule that presents an antigen, three MHC class II molecules (heterodimers of an alpha and a beta chain) associate with a CD74 trimer in the ER to form an heterononamer. Soon after the entry of this complex into the endosomal/lysosomal system where antigen processing occurs, CD74 undergoes a sequential degradation by various proteases, including CTSS and CTSL, leaving a small fragment termed CLIP (class-II-associated invariant chain peptide). The removal of CLIP is facilitated by HLA-DM via direct binding to the alpha-beta-CLIP complex so that CLIP is released. HLA-DM stabilizes MHC class II molecules until primary high affinity antigenic peptides are bound. The MHC II molecule bound to a peptide is then transported to the cell membrane surface. In B-cells, the interaction between HLA-DM and MHC class II molecules is regulated by HLA-DO. Primary dendritic cells (DCs) also to express HLA-DO. Lysosomal miroenvironment has been implicated in the regulation of antigen loading into MHC II molecules, increased acidification produces increased proteolysis and efficient peptide loading. -
Sequence similarities
Belongs to the MHC class II family.
Contains 1 Ig-like C1-type (immunoglobulin-like) domain. -
Post-translational
modificationsUbiquitinated by MARCH1 or MARCH8 at Lys-244 leading to down-regulation of MHC class II. When associated with ubiquitination of the beta subunit of HLA-DR: HLA-DRB4 'Lys-254', the down-regulation of MHC class II may be highly effective. -
Cellular localization
Cell membrane. Endoplasmic reticulum membrane. Golgi apparatus > trans-Golgi network membrane. Endosome membrane. Lysosome membrane. Late endosome membrane. The MHC class II complex transits through a number of intracellular compartments in the endocytic pathway until it reaches the cell membrane for antigen presentation. - Information by UniProt
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Database links
- Entrez Gene: 3122 Human
- Omim: 142860 Human
- SwissProt: P01903 Human
- Unigene: 520048 Human
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Alternative names
- DASS-397D15.1 antibody
- DR alpha chain antibody
- DR alpha chain precursor antibody
see all
Images
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Immunocytochemistry/ Immunofluorescent analysis of Ramos cells staining HLA-DR with ab257320 at 2µg/ml, followed by a goat anti-rabbit IgG-CF488 secondary (blue) and an isotype control (red).
This data was developed using the same antibody clone in a different buffer formulation containing PBS, BSA and sodium azide (ab257320).
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Immunocytochemistry/ Immunofluorescent analysis of Ramos cells staining HLA-DR with ab257320 at 2µg/ml, followed by a goat anti-rabbit IgG-CF488 secondary (green). Nuceli stained with reddot (red).
This data was developed using the same antibody clone in a different buffer formulation containing PBS, BSA and sodium azide (ab257320).
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Z- and S- Score: The Z-score represents the strength of a signal that a monoclonal antibody (MAb) (in combination with a fluorescently-tagged anti-IgG secondary antibody) produces when binding to a particular protein on the HuProtTM array. Z-scores are described in units of standard deviations (SD's) above the mean value of all signals generated on that array. If targets on HuProtTM are arranged in descending order of the Z-score, the S-score is the difference (also in units of SD's) between the Z-score. S-score therefore represents the relative target specificity of a MAb to its intended target. A MAb is considered to specific to its intended target, if the MAb has an S-score of at least 2.5. For example, if a MAb binds to protein X with a Z-score of 43 and to protein Y with a Z-score of 14, then the S-score for the binding of that MAb to protein X is equal to 29.
Protocols
To our knowledge, customised protocols are not required for this product. Please try the standard protocols listed below and let us know how you get on.
Datasheets and documents
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Datasheet download
References (0)
ab259258 has not yet been referenced specifically in any publications.