HLA-DR抗体
规格：1mg/1ml
英文名： HLA-DR/HLA DRB1
别名： DR alpha chain precursor; DRB1; DRB4; HLA class II histocompatibility antigen; HLA class II histocompatibility antigen DR alpha chain; HLA DR1B; HLA DR3B; HLA DRA; HLA DRA1; HLA DRB1; HLA DRB3; HLA DR
分子量： 26kDa
储存液：0.01M TBS(pH7.4) with 1% BSA, 0.03% Proclin300 and 50% Glyce
克隆类型：Polyclonal
亚型：IgG
纯化方法：affinity purified by Protein A
**原：KLH conjugated synthetic peptide derived from human HLA-DRA
交叉反应：Human, Mouse, Rat, Dog, Pig, Cow, Horse, Sheep,
细胞定位：细胞浆 细胞膜
HLA-DR抗体产品介绍：background: HLA-DRA is one of the HLA class II alpha chain paralogues. This class II molecule is a heterodimer consisting of an alpha and a beta chain, both anchored in the membrane. It plays a central role in the immune system by presenting peptides derived from extracellular proteins. Class II molecules are expressed in antigen presenting cells (APC: B lymphocytes, dendritic cells, macrophages). The alpha chain is approximately 33-35 kDa and its gene contains 5 exons. Exon 1 encodes the leader peptide, exons 2 and 3 encode the two extracellular domains, and exon 4 encodes the transmembrane domain and the cytoplasmic tail. DRA does not have polymorphisms in the peptide binding part and acts as the sole alpha chain for DRB1, DRB3, DRB4 and DRB5. [provided by RefSeq] 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 HLA-DR抗体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. Subunit: Heterodimer of an alpha and a beta subunit; also referred as MHC class II molecule. In the endoplasmic reticulum (ER) it forms an heterononamer; 3 MHC class II molecules bind to a CD74 homotrimer (also known as invariant chain or HLA class II histocompatibility antigen gamma chain). 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. Note=The MHC class II complex transits throughHLA-DR抗体 a number of intracellular compartments in the endocytic pathway until it reaches the cell membrane for antigen presentation. Post-translational modifications: Ubiquitinated 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. Similarity: Belongs to the MHC class II family. Contains 1 Ig-like C1-type (immunoglobulin-like) domain. Gene ID: 3122 Database links: Entrez Gene: 3122 Human Omim: 142860 Human SwissProt: P01903 Human Unigene: 520048 Human Important Note: This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications. HLA-DR抗原主要存在于内皮细胞、B**细胞、单核细胞。HLA-DR分子为二聚体结构，由非多态性的DRα链和多态性的DRβ链组成.
HLA-DR抗体产品应用：ELISA=1:500-1000 IHC-P=1:100-500 IHC-F=1:100-500 Flow-Cyt=1:20-540 ICC=1:100-500 IF=1:100-500 （石蜡切片需做抗原修复） not yet tested in other applications. optimal dilutions/concentrations should be determined by the end user.
研究领域：细胞生物 **学
储存条件： Store at -20 °C for one year. Avoid repeated freeze/thaw cycles.
来源： Rabbit
外观： Lyophilized or Liquid