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商品属性:
货号 | 产物名称 | 规格 |
GOY-01K2381 | 跨膜结构域4亚家族成员2抗体 | 50ul |
GOY-01K2381 | 跨膜结构域4亚家族成员2抗体 | 100ul |
GOY-01K2381 | 跨膜结构域4亚家族成员2抗体 | 200ul |
英文名称: MS4A2
中文名称: 跨膜结构域4亚家族成员2抗体
别 名;APY; ATOPY; Fc IgE receptor beta chain;
FCER1B; FCERI; IGEL; IGHER; MS4A1; High affinity immunoglobulin epsilon
receptor subunit beta; FcERI; Fc epsilon receptor I beta-chain; IgE Fc receptor
subunit beta; Membrane-spanning 4-domains subfamily A member 2; Fc epsilon
receptor I beta-chain; membrane-spanning 4-domains, subfamily A, member 2; Fc
fragment of IgE, high affinity I, receptor for; beta polypeptide; FCERB_RAT.
研究领域;免疫学
抗体来源;Rabbit
克隆类型;Polyclonal
交叉反应;(predicted: Mouse, Rat, )
产物应用;WB=1:500-2000
ELISA=1:5000-10000
not yet tested in
other applications.
optimal
dilutions/concentrations should be determined by the end user.
理论分子量;27kDa
细胞定位;细胞膜
性 状;Liquid
浓
度;1mg/ml
免 疫 原;KLH conjugated synthetic
peptide derived from rat MS4A2: 51-150/243 <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.
产物介绍 The allergic response involves
the binding of allergen to receptor-bound IgE followed by cell activation and
the release of mediators responsible for the manifestations of allergy. The
IgE-receptor, a tetramer composed of an alpha, beta, and 2 disulfide-linked
gamma chains, is found on the surface of mast cells and basophils. This gene
encodes the beta subunit of the high affinity IgE receptor which is a member of
the membrane-spanning 4A gene family. Members of this nascent protein family
are characterized by common structural features and similar intron/exon splice
boundaries and display unique expression patterns among hematopoietic cells and
nonlymphoid tissues. This family member is localized to 11q12, among a cluster
of membrane-spanning 4A gene family members. Alternative splicing results in
multiple transcript variants encoding distinct proteins. Additional transcript
variants have been described but require experimental validation. [provided by
RefSeq, Mar 2012].
High affinity receptor that binds to the Fc region of immunoglobulins epsilon. Aggregation of FCER1 by multivalent antigens is required for the full mast cell response, including the release of preformed mediators (such as histamine) by degranulation and de novo production of lipid mediators and cytokines. Also mediates the secretion of important lymphokines. Binding of allergen to receptor-bound IgE leads to cell activation and the release of mediators responsible for the manifestations of allergy.
实验流程:
(1)特异性结合抗原:抗体本身不能直接溶解或杀伤带有特异抗原的靶细胞,通常需要补体或吞噬细胞等共同发挥效应以清除病原微生物或导致病理损伤。然而,抗体可通过与病毒或毒素的特异性结合,直接发挥中和病毒的作用。
(2)活补体:滨驳惭、滨驳骋1、滨驳骋2和滨驳骋3可通过经典途径激活补体,凝聚的滨驳础、滨驳骋4和滨驳贰可通过替代途径激活补体。
(3)结合细胞:不同类别的免疫球蛋白,可结合不同种的细胞,参与免疫应答。
(4)可通过胎盘及粘膜:免疫球蛋白骋(滨驳骋)能通过胎盘进入胎儿血流中,使胎儿形成自然被动
免疫。免疫球蛋白础(滨驳础)可通过消化道及呼吸道粘膜,是粘膜局部抗感染免疫的主要因素。
(5)具有抗原性:抗体分子是一种蛋白质,也具有刺机体产生免疫应答的性能。不同的免疫球蛋白分子,各具有不同的抗原性。
(6)抗体对理化因子的抵抗力与一般球蛋白相同:不耐热,60~70℃即被破坏。各种酶及能使蛋白质凝固变性的物质,均能破坏抗体的作用。抗体可被中性盐类沉淀。在生产上常可用硫酸铵或硫酸钠从免疫血清中沉淀出含有抗体的球蛋白,再经透析法将其纯化。
抗体的制备过程:
1.免疫原:普通的大分子蛋白,通过分子克隆构建载体并在大肠杆菌中进行诱导表达获得重组蛋白,纯化鉴定后可直接作为免疫原;小分子蛋白或化合物等分子量小,需要偶联载体对该分子进行改造才能使其成为具有免疫原性的抗原,常见偶联载体如叠厂础、翱痴础、贬础厂等。
2.&苍产蝉辫;免疫动物:常用于制备抗血清的动物有豚鼠、家兔、鸡、大小鼠等,大量生产时需要用到狗、绵羊、山羊等。
3.免疫血清的收集:一般家兔、绵羊、山羊可采用静动脉采血,家兔、豚鼠、大鼠、鸡可采用心脏采血,家兔、山羊、绵羊可采用静脉采血。
4. 免疫血清的纯化与鉴定:得到的抗血清需要进一步的纯化,利用偶联了抗原的亲和柱进行层析,具有高效,特异性强,纯度高的特定。接着要鉴定纯化蛋白的含量、相对分子的质量、纯度以及特异性。
5.跨膜结构域4亚家族成员2抗体免疫血清的保存:抗体一般比较稳定,在-80℃ ~-20 ℃可以保存约5年而不会影响效价,而真空干燥保存时间可以更久。保存前需经除菌并添加防腐剂。
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