HLA-DP Recombinant Rabbit Monoclonal Antibody [PD00-70]

About this product

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.

Specifications

Catalog number

HA721247

Size / count

100 µL

Dry ice

No

Hazardous

No

Discontinued

No

CAS Number

9000-83-3

Product Name Alternative

DP (W3) antibody DP (W4) antibody HLA class II histocompatibility antigen DP alpha 1 chain antibody HLA class II histocompatibility antigen DP alpha chain antibody HLA DP1A antibody HLA DPA 1 antibody HLA SB alpha chain antibody HLADP antibody HLADPA1 antibody HLASB antibody HLASB histocompatibility type antibody Human MHC class II HLA SB alpha gene antibody Major histocompatibility complex class II DP alpha 1 antibody MHC class II antigen antibody MHC class II DP3 alpha antibody MHC class II DPA1 antibody MHC class II HLA DPA1 antigen antibody PLT1 antibody Primed lymphocyte test 1 antibody

Abbreviation

HLA-DPA1, HLA-DP1A, HLASB

Swiss Prot

P20036 Human

Cellular Locus

Cell membrane, Endoplasmic reticulum membrane, Golgi apparatus, Endosome membrane, Lysosome membrane.

Host

Rabbit

Species Reactivity

Human

Immunogen

Synthetic peptide.

Isotype

IgG

Conjugation

Non-conjugated

Type

Recombinant Rabbit monoclonal Antibody

Applications

IHC-P, FC

Positive Control

Human tonsil tissue, human diffuse large B-cell lymphoma tissue, Daudi.

Concentration

1 mg/mL

Dilution

IHC-P: 1:200-1:500 ;FC: 1:500-1:1,000

Purity

Protein A affinity purified.

Form

Liquid

Buffer

PBS (pH7.4), 0.1% BSA, 40% Glycerol. Preservative: 0.05% Sodium Azide.

Molecular Weight

Predicted band size: 29 kDa

Storage Conditions

Store at +4°C after thawing. Aliquot store at -20°C. Avoid repeated freeze/thaw cycles.

Recombinant Antibody

Yes