- ¥2980
- LMAI Bio
- LM-1297R-FITC
- 中国/美国/欧洲
- 2025年07月12日
- Flow-Cyt=1:50-200 IF=1:50-200
- Human, Mouse, Rat, Chicken, Dog, Pig, Cow, Horse,
- Human, Mouse, Rat, Chicken, Dog, Pig, Cow, Horse,
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- 详细信息
- 文献和实验
- 技术资料
- 供应商：
上海联迈生物工程有限公司
- 库存：
大量
- 靶点：
详见说明书
- 级别：
1
- 目录编号：
LM-1297R-FITC
- 克隆性：
多克隆
- 抗原来源：
Rabbit
- 保质期：
1年
- 抗体英文名：
Anti-CD28/FITC
- 抗体名：
Anti-CD28/FITC
- 标记物：
FITC标记
- 宿主：
Human, Mouse, Rat, Chicken, Dog, Pig, Cow, Horse,
- 适应物种：
Human, Mouse, Rat, Chicken, Dog, Pig, Cow, Horse,
- 免疫原：
详见说明书
- 亚型：
IGg
- 形态：
粉末、液体、冻干粉
- 应用范围：
Flow-Cyt=1:50-200 IF=1:50-200
- 浓度：
1mg/ml
- 保存条件：
-20 °C
- 规格：
100ul
| 英文名称 | Anti-CD28/FITC |
| 中文名称 | FITC标记的CD28抗体 |
| 别 名 | CD 28; CD28 antigen; CD28 molecule; MGC138290; T cell antigen CD28; T cell specific surface glycoprotein; T cell specific surface glycoprotein CD28; Tp44. |
| 规格价格 | 100ul/2980元 购买 大包装/询价 |
| 说 明 书 | 100ul |
| 研究领域 | 细胞生物 免疫学 干细胞 细胞粘附分子 细胞表面分子 淋巴细胞 t-淋巴细胞 b-淋巴细胞 |
| 抗体来源 | Rabbit |
| 克隆类型 | Polyclonal |
| 交叉反应 | Human, Mouse, Rat, Chicken, Dog, Pig, Cow, Horse, |
| 产品应用 | Flow-Cyt=1:50-200 IF=1:50-200 not yet tested in other applications. optimal dilutions/concentrations should be determined by the end user. |
| 分 子 量 | 25kDa |
| 细胞定位 | 细胞膜 |
| 性 状 | Lyophilized or Liquid |
| 浓 度 | 1mg/ml |
| 免 疫 原 | KLH conjugated synthetic peptide derived from mouse CD28 |
| 亚 型 | IgG |
| 纯化方法 | affinity purified by Protein A |
| 储 存 液 | 0.01M TBS(pH7.4) with 1% BSA, 0.03% Proclin300 and 50% Glycerol. |
| 保存条件 | Store at -20 °C for one year. Avoid repeated freeze/thaw cycles. The lyophilized antibody is stable at room temperature for at least one month and for greater than a year when kept at -20°C. When reconstituted in sterile pH 7.4 0.01M PBS or diluent of antibody the antibody is stable for at least two weeks at 2-4 °C. |
| 产品介绍 | background: Human CD28 antigen is a 44 kDa disulfide linked homodimeric T cell specific surface glycoprotein. It is a cell adhesion molecule of the immunoglobulin superfamily which is constitutively expressed on most peripheral blood T lymphocytes (approximately 95% of CD4+ cells and 50% of CD8+ cells). Mature thymocytes exhibit higher levels of CD28 than the immature cells. Activation of T cells results in enhanced CD28 expression. T cell activation requires two combined signals provided by antigen presenting cells. The first is mediated via the T cell receptor following its interaction with antigenic peptide MHC complexes, and the second is delivered by accessory or costimulating molecules through their counter receptors on T lymphocytes. CD28 bears structural homology to CTLA 4 which is expressed at very low levels on the surface of CD4+ and CD8+ peripheral blood cells only following activation. CD28 is the natural receptor for the B7/BB 1 ligand (CD80) a 55-60 kDa glycoprotein which is expressed on activated B lymphocytes, on dendritic cells and on interferon gamma treated monocytes. The binding of B7 1/BB 1 molecules to CD28 is involved in T lymphocyte activation and in the initiation and maintenance of chronic inflammation. Function: Possibly involved in T-cell activation. Subunit: Homodimer; disulfide-linked. Interacts with DUSP14. Binds to CD80/B7-1 and CD86/B7-2/B70. Subcellular Location: Membrane; Single-pass type I membrane protein. Similarity: Contains 1 Ig-like V-type (immunoglobulin-like) domain. Database links: Entrez Gene: 940 Human Entrez Gene: 12487 Mouse Omim: 186760 Human SwissProt: P10747 Human SwissProt: P31041 Mouse SwissProt: P42069 Rabbit Unigene: 591629 Human Unigene: 255003 Mouse Important Note: This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications. CD28是免疫球蛋白超家族成员之一 ，为T细胞特异性由二硫键连接的同源二聚体表面糖蛋白，主要分布在外周血淋巴细胞。对迟发型超敏反应以及Tc介导的细胞毒作用都有免疫调节作用。 |
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文献和实验当FITC在碱性溶液中与抗体蛋白反应时，主要是蛋白质上赖氨酸的r氨基与荧光素的硫碳胺键(thiocarbmide)结合，形成FITC-蛋白质结合物，即荧光抗体或荧光结合物。一个IgG分子中有86个赖氨酸残基，一般最多能结合15～20个，一个IgG分子可结合2～8个分子的FITC，其反应式如下FITC-N=C=S + N-H2-蛋白质 → FITC-NS-C-N-H2-蛋白质常用Marsshall(1958)法标记荧光抗体，也可以根据条件采用Chadwick等标记法或Clark
ml三蒸水中即成； 方法与步骤： 根据Marshall氏法高效价的抗人球蛋白兔免疫血清，分离球蛋白。 1. 用0.15 mol/L NaCl的盐水及0.15 mol/L pH9.0的NaHCO3-Na2CO3缓冲液稀释使每毫升内含抗体10mg，缓冲液为总量的10%； 2. 将以上溶液降温至4℃，按蛋白：荧光素=50—80mg：1mg的比例加入异硫氰酸荧光素，在0—4℃下电磁搅拌12—14h； 3.用半饱和硫酸铵将标记球蛋白
5. 过柱。取透析过夜的标记物，过葡萄糖凝胶G-25或G-50柱，分离出游离荧光素，收集标记的荧光抗体进行鉴定。
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