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- 详细信息
- 询价记录
- 文献和实验
- 技术资料
- 形态:
液体
- 保存条件:
-20℃
- 克隆性:
其他
- 标记物:
BSA
- 级别:
实验级
- 库存:
999
- 供应商:
北京索莱宝科技有限公司
- 浓度:
BSA≈5mg/ml
- 抗体英文名:
BSA/FITC
- 抗体名:
FITC标记的BSA
- 规格:
0.5ml
标记材料:
1、异硫氰酸荧光素(fluorescein isothiocyanate, FITC)异构体I(isomer I),来源于sigma,MW:389.4, 激发波长 493nm,发射波长 550nm。
2、牛血清白蛋白(Bovine Serum Albumin ,BSA),进口分装,MW: ~68000,纯度98%。
3、标记缓冲液:0.5M pH9.5 CB(碳酸盐缓冲液),洗脱液:0.01M pH7.2 PBS。
标记方法:
直接标记法:RT 2.5-3.0hs,离心后过Sephadex G-50,0.01M pH7.2 PBS洗柱。
质量分析:
溶液为0.01M pH7.2 PBS(含0.03%proclin,50%甘油),蛋白浓度为5mg/ml左右,FITC浓度为 30-45ug/ml,含有防腐剂。
备注:产品信息可能会有优化升级。请以实际标签信息为准。
使用前请离心。如有问题请及时联系我们。
1.本产品仅供科研使用。请勿用于医药、临床诊断或治疗,食品及化妆品等用途。请勿存放于普通住宅区。
2.为了您的安全和健康,请穿好实验服并佩戴一次性手套和口罩操作。
3.实验结果可由多种因素影响,相关处理只限于产品本身,不涉及其他赔偿。
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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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