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HLA-DRB1 (基因名), HLA class II histocompatibility antigen, DRB1-13 beta chain (蛋白名), 2B1D_HUMAN.

产品名称:

Human HLA-DRB1/ HLA class II histocompatibility antigen, DRB1-13 beta chain ELISA Kit

货号:

商标:

EIAab^®

监管等级:

RUO

别名:

MHC class II antigen DRB1*13, DR-13

检测方法:

ELISA

特异性:

Natural and recombinant human HLA class II histocompatibility antigen, DRB1-13 beta chain

样品类型:

Serum, plasma, tissue homogenates, cell culture supernates and other biological fluids

样品数据:

研究领域:

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Human HLA-DRB1 ELISA Kit

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常见问题解答
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通用注释

亚单元:

Heterodimer of an alpha and a beta subunit; also referred as MHC class II molecule. In the endoplasmic reticulum (ER) it forms a heterononamer; 3 MHC class II molecules bind to a CD74 homotrimer (also known as invariant chain or HLA class II histocompatibility antigen gamma chain). In the endosomal/lysosomal system; CD74 undergoes sequential degradation by various proteases; leaving a small fragment termed CLIP on each MHC class II molecule. MHC class II molecule interacts with HLA_DM, and HLA_DO in B-cells, in order to release CLIP and facilitate the binding of antigenic peptides.

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.

亚细胞位置:

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 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.

数据库链接

UniGene:

Hs.485130

SMR:

Q5Y7A7

MIM:

142857

Pfam:

PF07654

Uniprot:

Q5Y7A7

相关产品

Human HLA-DRB1 CLIA Kit

Human HLA-DRB1 Protein

Human HLA-DRB1 Polyclonal Antibody

序列长度:

266

序列:

仅供参考，详细请咨询（services@eiaab.com）

50:

100:

150:

200:

250:

266:

RNQKGHSGLQ | PRGFLS

3D 模型:

3D 结构:

免疫原序列:

验证序列:

该产品尚未在任何出版物中被引用。

[1].

人HLA-DRB1ELISA试剂盒可以做多少个样本？

人HLA-DRB1ELISA试剂盒分为2种规格，96孔和48孔。96孔的试剂盒，标曲和样本都做复孔的话，可以检测40个样本。96孔的试剂盒，标曲和样本都不做复孔的话，可以检测88个样本。

[2].

人HLA-DRB1ELISA试剂盒使用视频？

人HLA-DRB1ELISA试剂盒实验操作视频在以下网址中，对每一步的实验步骤都做了演示，方便实验员能更好地理解ELISA实验的过程。
https://www.eiaab.com.cn/lesson-tech/805.html

[3].

人HLA-DRB1ELISA试剂盒是放在-20℃冰箱保存吗？

EIAab的人HLA-DRB1ELISA试剂盒，洗涤液、底物、终止液保存于4℃，其余试剂-20℃冰箱保存。

[4].

人HLA-DRB1ELISA试剂盒原理？

双抗体夹心法：用纯化的抗体包被微孔板，制成固相抗体，往包被有固相抗体的微孔中依次加入标准品或受检样本、生物素化抗体、HRP标记的亲和素，经过彻底洗涤后用底物TMB显色。用酶标仪在450nm波长下测定吸光度(OD值）,计算样本浓度。
竞争法：用纯化的抗体包被微孔板，制成固相抗体，往包被有固相抗体的微孔中依次加入标准品或受检样本和生物素标记的目标分析物，受检标本中抗原与生物素标记抗原竞争结合有限的抗体。再加入HRP标记的亲和素，经过彻底洗涤后用底物TMB显色。用酶标仪在450nm波长下测定吸光度(OD值）,计算样本浓度。

[5].

人HLA-DRB1ELISA试剂盒中需要使用的样品量是多少？

夹心法100μL/孔，竞争法50μL/孔。如样本浓度过高时，应对样本进行稀释，以使稀释后的样本符合试剂盒的检测范围，计算时再乘以相应的稀释倍数。

[6].

如何分析人HLA-DRB1ELISA试剂盒数据？

建议标准曲线，并计算样本浓度。对于elisa的曲线拟合，一般建议采用4参数曲线拟合，4参数曲线拟合通常更适合免疫分析。推荐使用专业软件进行曲线拟合，例如curve expert 1.3。根据样本的OD值由标曲查出相应的浓度，再乘以稀释倍数；或用标准物的浓度与OD值计算出标曲的回归方程式，将样本的OD值代入方程式，计算出样本浓度，再乘以稀释倍数，即为样本的实际浓度。以下链接是curve expert 1.3软件拟合曲线的方法。
https://www.eiaab.com.cn/news/502/

[7].

人HLA-DRB1ELISA试剂盒中是否包含人和动物的副产物，是否包含感染的或者传染性原料如HIV等？

除了抗体和稀释液中的BSA，不含其它人和动物的副产物，也不含感染材料。

[8].

收集人HLA-DRB1ELISA试剂盒血浆样本，用什么作为抗凝剂？

一般建议用EDTA和肝素作为抗凝剂。

[9].

人HLA-DRB1ELISA试剂盒酶标板可以拆成几部分？拆的时候是否需要避光，无菌？

人HLA-DRB1ELISA试剂盒酶标板是8×12孔条，可拆卸，板子可以拆成12条，注意避免孔污染，不需要避光和无菌。暂时不用的板子，放回原来装的袋子里，密封保存。

[10].

人HLA-DRB1ELISA试剂盒样本如何保存？

尽量检测新鲜样本。若无新鲜样本，则4℃保存1周，-20℃保存1个月，-80℃保存2个月。

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