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Recombinant Human HLA class II histocompatibility antigen, DQ alpha 2 chain (HLA-DQA2)

  • 中文名稱(chēng):
    人HLA-DQA2重組蛋白
  • 貨號(hào):
    CSB-CF010493HU
  • 規(guī)格:
  • 來(lái)源:
    in vitro E.coli expression system
  • 其他:

產(chǎn)品詳情

  • 基因名:
  • Uniprot No.:
  • 別名:
    DQ(6) alpha chain; DQA2_HUMAN; DX alpha; DX alpha chain; HLA class II histocompatibility antigen; HLA class II histocompatibility antigen DQ(6) alpha chain; HLA class II histocompatibility antigen; DQ alpha 2 chain; HLA DXA; HLA-DQA1; HLA-DQA2; Major histocompatibility complex class II DQ alpha 2; MHC class II DQA2
  • 種屬:
    Homo sapiens (Human)
  • 蛋白長(zhǎng)度:
    Full Length of Mature Protein
  • 表達(dá)區(qū)域:
    24-255
  • 氨基酸序列
    EDIVADHVASYGVNFYQSHGPSGQYTHEFDGDEEFYVDLETKETVWQLPMFSKFISFDPQSALRNMAVGKHTLEFMMRQSNSTAATNEVPEVTVFSKFPVTLGQPNTLICLVDNIFPPVVNITWLSNGHSVTEGVSETSFLSKSDHSFFKISYLTFLPSADEIYDCKVEHWGLDEPLLKHWEPEIPAPMSELTETLVCALGLSVGLMGIVVGTVFIIQGLRSVGASRHQGLL
    Note: The complete sequence may include tag sequence, target protein sequence, linker sequence and extra sequence that is translated with the protein sequence for the purpose(s) of secretion, stability, solubility, etc.
    If the exact amino acid sequence of this recombinant protein is critical to your application, please explicitly request the full and complete sequence of this protein before ordering.
  • 蛋白標(biāo)簽:
    10xHis-SUMO-tag
  • 產(chǎn)品提供形式:
    Liquid or Lyophilized powder
    Note: We will preferentially ship the format that we have in stock, however, if you have any special requirement for the format, please remark your requirement when placing the order, we will prepare according to your demand.
  • 緩沖液:
    Lyophilized from Tris/PBS-based buffer, 6% Trehalose, pH 8.0
  • 儲(chǔ)存條件:
    Store at -20°C/-80°C upon receipt, aliquoting is necessary for mutiple use. Avoid repeated freeze-thaw cycles.
  • 保質(zhì)期:
    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.
  • 貨期:
    Basically, we can dispatch the products out in 1-3 working days after receiving your orders. Delivery time may differ from different purchasing way or location, please kindly consult your local distributors for specific delivery time.
    Note: All of our proteins are default shipped with normal blue ice packs, if you request to ship with dry ice, please communicate with us in advance and extra fees will be charged.
  • 注意事項(xiàng):
    Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.
  • Datasheet & COA:
    Please contact us to get it.

產(chǎn)品評(píng)價(jià)

靶點(diǎn)詳情

  • 功能:
    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.
  • 基因功能參考文獻(xiàn):
    1. HLA-DQB1/HLA-DQA2 rs9275328 may play a part in influencing the systemic lupus erythematosis susceptibility in Malays and Chinese in Malaysia. PMID: 23257407
    2. HLA-DQA2 and HLA-DQB2 genes are expressed in human Langerhans cells and encode a new HLA class II molecule. PMID: 22407913
    3. Parkinson's disease-associated SNP4 is correlated (r2=0.95) with variants that are associated with HLA-DQA2 expression. PMID: 22096524
    4. a significant single nucleotide polymorphism , rs3998159, between HLA-DQB1 and HLA-DQA2 was identified in patients with asthma PMID: 20159242
  • 亞細(xì)胞定位:
    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. Note=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.
  • 蛋白家族:
    MHC class II family
  • 組織特異性:
    Restricted to skin Langerhans cells, although some expression at low levels may occur at the surface of B lymphoblastoid cells.
  • 數(shù)據(jù)庫(kù)鏈接:

    HGNC: 4943

    OMIM: 613503

    KEGG: hsa:3118

    STRING: 9606.ENSP00000364076

    UniGene: Hs.591798



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