Recombinant Human HLA class II histocompatibility antigen, DRB1-11 beta chain(HLA-DRB1),partial

Product Type Recombinant Protein
Uniprot No. P20039
Species Homo sapiens (Human)
Gene Names HLA-DRB1
Protein Names Recommended name: HLA class II histocompatibility antigen, DRB1-11 beta chain Alternative name(s): DR-5 Short name= DR5 DRw11 MHC class II antigen DRB1*11
Storage The shelf life is related to many factors, storage state, buffer ingredients, storage temperature and the stability of the protein itself.Generally, the shelf life of liquid form is 6 months at -20°C/-80°C. The shelf life of lyophilized form is 12 months at -20°C/-80°C.
Notes Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.
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 Location Cell membrane, Single-pass type I membrane protein, Endoplasmic reticulum membrane, Single-pass type I membrane protein, Golgi apparatus, trans-Golgi network membrane, Single-pass type I membrane protein, Endosome membrane, Single-pass type I membrane protein, Lysosome membrane, Single-pass type I membrane protein, Late endosome membrane, Single-pass type I membrane protein
Protein Families MHC class II family
Database Links

HGNC: 4948

OMIM: 142857

UniGene: Hs.534322

Pathway Antigen processing and presentation
Hematopoietic cell lineage
Th1 and Th2 cell differentiation
Th17 cell differentiation

Product Details for Different Expression Systems

Product Name Recombinant Human HLA class II histocompatibility antigen, DRB1-11 beta chain(HLA-DRB1),partial,Yeast
Code CSB-YP323178HU
Size Pls inquiry other sizes
Source Yeast
Purity >85% (SDS-PAGE)
Tag Info The following tags are available.
N-terminal His-tagged
Tag-Free
The tag type will be determined during production process. If you have specified tag type, please tell us and we will develop the specified tag preferentially.
Protein Description Partial
Storage Buffer Tris-based buffer,50% glycerol
Still Have Questions? Leave a Message or Start an on-line Chat
Product Name Recombinant Human HLA class II histocompatibility antigen, DRB1-11 beta chain(HLA-DRB1),partial,E.coli
Code CSB-EP323178HU
Size Pls inquiry other sizes
Source E.coli
Purity >85% (SDS-PAGE)
Tag Info The following tags are available.
N-terminal His-tagged and C-terminal Myc-tagged
N-terminal His-SUMO-tagged and C-terminal Myc-tagged
N-terminal His-B2M-tagged and C-terminal Myc-tagged
N-terminal His-GST-tagged and C-terminal Myc-tagged
N-terminal His-tagged
N-terminal His-SUMO-tagged
N-terminal His-B2M-tagged
N-terminal His-GST-tagged
N-terminal GST-tagged
Tag-Free
The tag type will be determined during production process. If you have specified tag type, please tell us and we will develop the specified tag preferentially.
Protein Description Partial
Storage Buffer Tris-based buffer,50% glycerol
Still Have Questions? Leave a Message or Start an on-line Chat
Product Name Recombinant Human HLA class II histocompatibility antigen, DRB1-11 beta chain(HLA-DRB1),partial,Baculovirus
Code CSB-BP323178HU
Size Pls inquiry other sizes
Source Baculovirus
Purity >85% (SDS-PAGE)
Tag Info The following tags are available.
N-terminal His-tagged and C-terminal Myc-tagged
N-terminal His-tagged
Tag-Free
The tag type will be determined during production process. If you have specified tag type, please tell us and we will develop the specified tag preferentially.
Protein Description Partial
Storage Buffer Tris-based buffer,50% glycerol
Still Have Questions? Leave a Message or Start an on-line Chat
Product Name Recombinant Human HLA class II histocompatibility antigen, DRB1-11 beta chain(HLA-DRB1),partial,Mammalian cell
Code CSB-MP323178HU
Size Pls inquiry other sizes
Source Mammalian cell
Purity >85% (SDS-PAGE)
Tag Info The following tags are available.
N-terminal His-tagged and C-terminal Myc-tagged
N-terminal His-tagged
Tag-Free
The tag type will be determined during production process. If you have specified tag type, please tell us and we will develop the specified tag preferentially.
Protein Description Partial
Storage Buffer Tris-based buffer,50% glycerol
Still Have Questions? Leave a Message or Start an on-line Chat

Most popular with customers

Newsletters

Get all the latest information on Events, Sales and Offers. Sign up for newsletter today.

Copyright © 2007-2018 www.cusabio.com CUSABIO TECHNOLOGY LLC All Rights Reserved.