抗体是广泛研究和体外诊断(IVD)应用的核心试剂。根据生产方法,它们可以分为多克隆或单克隆,也可以根据识别的靶标类型分为一抗和二抗。选择抗体时需要考虑的因素包括它们的验证严格程度,以及它们是否有足够的数量来满足特定项目的长期需求。
什么是单克隆抗体和多克隆抗体?
已建立的抗体生产方法是通过用目标抗原免疫动物来启动的。然后,抗原呈递细胞对其进行处理,使其能够通过循环B淋巴细胞进行检测,每个B淋巴细胞在其表面表达一种独特的抗体。在靶识别之后,B淋巴细胞进行克隆扩增并分泌可从血清中纯化的抗体。以这种方式产生的抗体被描述为多克隆的,因为所得产物包括来自多个B淋巴细胞的抗体,每个B淋巴细胞识别不同的表位。
作为这种方法的替代方案,可以分离B淋巴细胞并用于产生杂交瘤。通过在适当的培养基中稀释这些,使得多孔板的每个孔仅接收一个杂交瘤,可以测试细胞上清液并鉴定表现最好的克隆。通过这种方法产生的抗体被描述为单克隆抗体。
凯靖公司构建了基于全自动化高通量杂交瘤和单B细胞技术的单克隆抗体对发现平台。
一抗和二抗的区别是什么?
虽然一抗直接与特定抗原结合,如细胞骨架蛋白或细胞因子,但二抗用于间接检测。这意味着只有当一级抗体识别出它们的靶点后,它们才能结合一级抗体。二级抗体是通过用来自另一物种的抗体免疫动物而产生的,并且通常用于通过多种二级抗体与每种一级抗体的结合来提供信号扩增。
抗体选择注意事项
抗体选择需要考虑的因素包括是使用多克隆还是单克隆,是否需要直接或间接检测,以及将使用何种类型的应用。虽然酶如辣根过氧化物酶(HRP)通常用于比色或化学发光检测,但荧光团优选用于流式细胞术或免疫组织化学(IHC)等多重应用。至关重要的是,抗体试剂应被证明能特异性识别其靶抗原,而不会表现出不必要的交叉反应性。
为什么选择凯靖生物?
凯靖生物10多年的一级和二级抗体生产经验,专注于抗原抗体的研发和生产,公司构建了基于全自动化高通量杂交瘤和单B细胞技术的单克隆抗体对发现平台,为客户提供创优产品和创新服务。是您值得信赖的现成和定制抗体产品合作伙伴。我们的客户包括许领先的体外诊断制造商、制药公司和研究机构,凭借多年客户服务和经验积累,我们提供始终如一的高质量产品。
产品信息 | |
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描述 | Beta actin is one of six actin isoforms which have been identified. Beta actin is a non-muscle cytoskeletal protein in all human cell types and is involved in cell motility, structure, and integrity. There are six different actin isoforms in human. The beta isoform of actin, along with gamma actin, coexist in most cell types as components of the cyto-skeleton. Beta actins are cytoplasmic proteins ubuquitously expressed in all eukaryotic cells. Polymerization of globular actin (G-actin) leads to a structural filament (F-actin) in the form of two stranded helix. Actins are highly conserved proteins that are involved in cell motility, structure and integrity. Because beta actin is ubiquitously expressed in all eukaryotic cells, it is frequently used as a loading control for assays involving protein detection, such as Western blotting. Antibodies to beta-actin provide a specific and useful tool in studying the intracellular distribution of beta-actin and the static and dynamic aspects of the cytoskeleton. |
别名 | β-Actin antibody |
来源宿主 | rabbit |
反应种属 | Human, Mouse, Non-human primate, Rat |
克隆类型 | Polyclonal |
同种型 | IgG |
特异性 | IgG h+l |
标记 | NA |
纯化方式 | Protein A/G Affinity Purified |
形式 | Liquid |
浓度 | 1mg/ml |
分子量 | Predicted molecular weight: 42kD |
存储溶液 | PBS、0.5%BSA、0.03%PC-300 |
防腐剂 | 0.03%PC-300 |
存储方式 | Store at 4℃ for one year.Avoid repeated freeze/thaw cycles. |
应用 | WB、IHC、IF/ICC、ELISA |
使用方法 | WB 1:1000-1:10000 IHC 1:200 IF/ICC 1:100-1:500 |
注意事项 | It is recommended to test the optimal dilution before use. |
靶标信息 | |
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功能 | Actins are highly conserved proteins that are involved in various types of cell motility and are ubiquitously expressed in all eukaryotic cells. |
疾病相关 | Defects in ACTB are a cause of dystonia juvenile-onset (DYTJ) [MIM:607371]. DYTJ is a form of dystonia with juvenile onset. Dystonia is defined by the presence of sustained involuntary muscle contraction, often leading to abnormal postures. DYTJ patients manifest progressive, generalized, dopa-unresponsive dystonia, developmental malformations and sensory hearing loss. |
序列相似性 | Belongs to the actin family. |
翻译后修饰 | ISGylated. |
细胞定位 | Cytoplasm > cytoskeleton. Localized in cytoplasmic mRNP granules containing untranslated mRNAs. |
UniProt accession | P60709 |