HLA-DRB4 Antibody (YA6933)

Cat. No.: HY-P87245: Data Sheet User Guide for Antibodies
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HLA-DRB4 Antibody (YA6933) is a Rabbit-derived and non-conjugated IgG monoclonal antibody, targeting to HLA-DRB4.

For research use only. We do not sell to patients.

Size		Stock
50 μL		Get quote
100 μL		Get quote

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WB: Western Blot;
IHC-P: Immunohistochemistry-Paraffin;
IHC-F: Immunohistochemistry-Frozen;
ICC/IF: Immunocytochemistry/Immunofluorescence;
IF-Tissue: Immunofluorescence-Tissue;
mIHC: Multiplex Immunohistochemical;
IP: Immunoprecipitation;
ChIP: Chromatin Immunoprecipitation;
FC: Flow Cytometry;
ELISA: Enzyme Linked Immunosorbent Assay

Product Detail
Background
Documentation

Description

HLA-DRB4 Antibody (YA6933) is a Rabbit-derived and non-conjugated IgG monoclonal antibody, targeting to HLA-DRB4.

Host

Rabbit

Clonality

Recombinant,Monoclonal

Molecular Weight

Predicted band size：30 kDa;

Observed band size: 30 kDa

Note: Due to possible protein modifications or aggregation, the molecular weight should be confirmed by actual measurement, and the predicted value is for reference only.

Species Reactivity

Human

SwissProt ID

P13762

Immunogen

Synthetic peptide corresponding to the extracellular domain of Human HLA-DRB4.

Application &
Dilution Ratio

Application	Dilution Ratio
WB WB: Western Blot	1:500-1:2000
IHC-P IHC-P: Immunohistochemistry-Paraffin	1:50-1:200
FC FC: Flow Cytometry	1:50-1:100

Purity	affinity purified.	Conjugation	Non-conjugated
Modification	Unmodified	Isotype	IgG

Appearance

Liquid

Formulation

Supplied in 1*TBS (pH7.4), 0.05% BSA, 40% Glycerol. Preservative: 0.05% Sodium Azide.

Storage & Stability

Stored at -20°C for 1 year. Avoid repeated freeze / thaw cycles.

Shipping

Shipping with blue ice.

Background

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 a 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 microenvironment has been implicated in the regulation of antigen loading into MHC II molecules, increased acidification produces increased proteolysis and efficient peptide loading

Subcellular Localization：Cell membrane,Endoplasmic reticulum membrane,Golgi apparatus, trans-Golgi network membrane,Endosome membrane,Lysosome membrane,Late endosome membrane

Isoforms & Post-Translational Modification：P13762: 266 amino acids, molecular weight 29941 Da.

Subunit：Heterodimer of an alpha and a beta subunit; also referred as MHC class II molecule

Synonyms

DR 4 antibody

Documentation

User Guide for Antibodies (1077 KB)