英文名称：FITC-Streptavidin,Fluorescein-Streptavidin

中 文 名：荧光素标记链霉亲和素，FITC标记的链霉亲和素。

Excitation Laser：Blue Laser (488 nm)

一种绿色荧光标记的链霉亲和素，吸收波长为488nM，发射波长为510nM。

Description：

Streptavidin binds to biotin with high affinity. Streptavidin-fluorescein isothiocyanate (FITC) is useful for detecting biotinylated antibodies. The excitation of FITC by 488 nm laser light induces a light emission maximum of 520 nm.

应用简介：

Streptavidin-FITC is useful as a second step reagent for indirect immunofluorescent staining, in conjunction with biotinylated primary antibodies. The average molecular weight of Streptavidin-FITC is 60 kD and Streptavidin alone is 52 kD.

基本数据：

Molecular Weight ～60 kDa (tetramer)

Concentration 5 mg/ml

Modification level 2.8 FITC/tetramer

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链霉亲和素其他相关产品：

Streptavidin-FITC

Streptavidin-TRITC

Streptavidin-CY5

Streptavidin-CY3

Streptavidin-thiol

FITC-BSA

TRITC-BSA

BAS-CY5

BAS-CY3

BAS-Biotin

Concanavalin A-CY5

Concanavalin A-CY3

Concanavalin A-CY5.5

Concanavalin A-FITC

Concanavalin A-Biotin

Concanavalin A-SH

Concanavalin A-TRITC

链霉亲和素(SA)简述：

链霉亲和素(SA)是Streptomyces avidinii菌的分泌物，其分子量及结合生物素的能力与鸡蛋清中的亲和素相似，等电点6.0，非特异性结合远比亲和素低。

 链霉亲和素(SA)的来源：

SA 是Streptomyces avicllrdi菌培养过程中的分泌产物，主要通过2一亚氨基生物索亲和层析法提纯，1L培养液中含蛋白10~60mg。链霉亲和素是四聚体蛋白，大小为66KDa。一分子链霉亲和素可以高度特异性地与四分子生物素结合，两者之间的亲和力极为强烈。

Streptavidin-FITC is useful as a second step reagent for indirect immunofluorescent staining, in conjunction with biotinylated primary antibodies. The average molecular weight of Streptavidin-FITC is 60 kD and Streptavidin alone is 52 kD.