商品属性:
产品名称
HLA-DR抗体
货号
BJ009475
英文名称
HLA-DRA
浓 度
1mg/ml
研究领域
细胞生物
细胞定位
细胞浆 细胞膜
抗体来源
Rabbit
性 状
Liquid
克隆类型
Polyclonal
亚 型
IgG
理论分子量
26kDa
用途
仅供科研研究实验
商品介绍:
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 DRB3; HLA DRB4; HLA DRB5;
HLADR4B; HLADRA1; HLADRB; Major histocompatibility complex class II DR alpha;
Major histocompatibility complex class II DR beta 1; Major histocompatibility
complex class II DR beta 3; Major histocompatibility complex class II DR beta
4; Major histocompatibility complex class II DR beta 5; MGC117330; MHC cell
surface glycoprotein; MHC class II antigen DRA; MHC II; DRA_HUMAN.
交叉反应;Human, Mouse, Rat, (predicted: Dog, Pig, Cow, Horse, Sheep, )
产品应用;ELISA=1:5000-10000
IHC-P=1:100-500 Flow-Cyt=1μg/Test (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.
免 疫 原;KLH conjugated synthetic
peptide derived from human HLA-DRA: 1-100/254 <Extracellular>
亚 型;IgG
纯化方法;affinity purified by Protein A
缓 冲 液;0.01M TBS(pH7.4) with 1% BSA,
0.03% Proclin300 and 50% Glycerol.
注意事项;This product as supplied is
intended for research use only, not for use in human, therapeutic or diagnostic
applications.
HLA-DR抗体产品介绍:
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]
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.
一抗是一种球蛋白,能特异性结合特定蛋白或重点研究的其他生物分子,目的是对其进行纯化、检测和定量。使用小鼠、大鼠、兔子、山羊和其他动物作为宿主,可获得多克隆或单克隆抗体。
一抗的生产和类型有多种形式,从抗血清粗品到抗原纯化制剂不等。
我们常说的抗体指的是第抗体。市售的一抗有多种不同的生产方式,这些不同导致抗体各具特性,适用于不同的应用。了解每种抗体的特性对选择合适的抗体至关重要。
单克隆抗体和多克隆抗体都是我们实验中常用的抗体产品。他们在识别的抗原表位、生产和应用等方面有一些区别。
✓多克隆抗体(polyclonal antibody, pAb):用一种包含多种抗原决定簇的抗原动物,可刺激机体多个 B 细胞克隆产生针对多种抗原表位的抗体。
✓单克隆抗体(monoclonal antibodies, mAb):由单一 B 细胞克隆产生的识别一种抗原表位的抗体。
双特异性抗体实验流程 :
1. 目标选择:
确定目标:确定需要靶向的相关蛋白或细胞表面受体。
确定机制:确定的作用机制,例如靶向细胞表面受体促进细胞凋亡,或者阻断病原体的进入等。
2. 抗体设计:
设计抗体结构:设计能够同时结合两个不同抗原的抗体结构。
确定结构特征:确定双特异性抗体的结构特征,例如连接方式、抗原结合位点等。
3. 抗体工程:
克隆基因:通过分子生物学技术克隆出编码双特异性抗体的基因序列。
重组表达:将基因插入适当的表达系统(通常是哺乳动物细胞或大肠杆菌)进行表达和生产。
4. 抗体表征:
亲和度分析:使用生物物理学技术(如表面等离子共振、生物层析等)评估抗体与抗原的亲和度。
功能性分析:评估抗体的生物学活性,例如在细胞模型中测试其对靶标的影响。
5. 生产和纯化:
大规模生产:将优选的双特异性抗体基因转染至合适的细胞系,进行大规模生产。
纯化:使用柱层析、亲和层析等技术对抗体进行纯化。
6. 功能验证:
体外实验:在细胞系或体外模型中评估双特异性抗体的活性和毒性。
动物模型:在动物模型中评估双特异性抗体的药效学和性。
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