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HLA-DPA1 antibody
| 规格 | 价格 |
|---|---|
| 100μg | RMB ¥2100 |
| 50μg | RMB ¥1260 |
货期：
三个工作日+顺丰快递时长
- 产品名称
- HLA-DPA1 antibody
- 货号
- FNab03902
- 规格
- 100μg
- 状态
- liquid
- 纯化方法
- Immunogen affinity purified
- 纯度
- ≥95% as determined by SDS-PAGE
- 克隆性
- polyclonal
- 亚型
- IgG
- 存储
- PBS with 0.02% sodium azide and 50% glycerol pH 7.3, -20℃ for 12 months(Avoid repeated freeze / thaw cycles.)
免疫原信息
- 免疫原
- major histocompatibility complex, class II, DP alpha 1
- 别称
- HLA class II histocompatibility antigen antibody, DP alpha 1 chain|DP(W3)|DP(W4)|HLA-SB alpha chain|MHC class II DP3-alpha|MHC class II DPA1|HLA-DPA1|HLA-DP1A|HLASB antibody
- UniProt ID
- P20036
- 分子量
- 33 kDa
验证实验
- 验证实验
- ELISA, WB
- 建议稀释比例
- WB: 1:500-1:2000
验证图片
Raji cells were subjected to SDS PAGE followed by western blot with FNab03902( HLA-DPA1 Antibody) at dilution of 1:1000
- 背景介绍
- 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.
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