跳转至内容
Merck

B3928

Sigma-Aldrich

Blue-White Select 筛选试剂

for selection of recombinant bacterial clones

别名:

Blue-White Reagent, Screening Reagent, Selection Reagent

登录查看公司和协议定价


About This Item

分類程式碼代碼:
12352200
NACRES:
NA.85

等級

for molecular biology

品質等級

形狀

liquid

用途

sufficient for 125 dishes (90 mm)

技術

nucleic acid detection: suitable

適合性

suitable for nucleic acid staining

運輸包裝

dry ice

儲存溫度

−20°C

相关类别

一般說明

Sigma 蓝白 Select 筛选试剂是 β-半乳糖苷酶 的显色底物,用于确定琼脂平板上生长的细菌中是否存在克隆的 DNA 插入片段。蓝白选择筛选试剂设计用于选择具有 lac + 表型的蓝白色重组细菌菌落。

特點和優勢

  • 强烈的颜色对比,便于菌落选择
  • 便捷的即用型解决方案

成分

40 mg/mL IPTG
40 mg/mL X-Gal
(在 DMSO 中制备)

原則

当 Blue-White Select 筛查试剂被 β-半乳糖苷酶裂解时,所得产物会形成蓝色沉淀。存在 Lac + 菌落的情况下生长 Select 筛选试剂保持白色,便于区分 lac + 和 lac-菌落。

该技术是基于载体的,如携带编码β-半乳糖苷酶 α-片段的 β-半乳糖苷酶基因的 pUC 和 M13mp 系列。开发这些载体需要使用携带互补基因片段的细菌菌株,以允许组装活性复合物,从而形成蓝色菌落。将 DNA 片段插入载体导致 ß-半乳糖苷酶基因断裂 ′多克隆位点导致功能 β-半乳糖苷酶活性;这些菌落保持白色,便于区分 lac + 和 lac-菌落。

法律資訊

Blue-White Select is a trademark of Sigma-Aldrich Co. LLC

儲存類別代碼

10 - Combustible liquids

水污染物質分類(WGK)

WGK 3

閃點(°F)

188.6 °F

閃點(°C)

87 °C

個人防護裝備

Eyeshields, Gloves, type ABEK (EN14387) respirator filter


分析证书(COA)

输入产品批号来搜索 分析证书(COA) 。批号可以在产品标签上"批“ (Lot或Batch)字后找到。

已有该产品?

在文件库中查找您最近购买产品的文档。

访问文档库

Methylation of single-stranded DNA in vitro introduces new restriction endonuclease cleavage sites.
B Gronenborn et al.
Nature, 272(5651), 375-377 (1978-03-23)
Characterization by in vitro complementation of a peptide corresponding to an operator-proximal segment of the beta-galactosidase structural gene of Escherichia coli.
A Ullmann et al.
Journal of molecular biology, 24(2), 339-343 (1967-03-14)
D S Biard et al.
Biochimica et biophysica acta, 1130(1), 68-74 (1992-02-28)
We have investigated the use of various Epstein-Barr virus (EBV)-based vectors bearing the two components of the Escherichia coli lac operator-repressor (lacO, lacI) complex. Our aim was to develop a model system of gene expression by looking at the transcription
Regulation of the Escherichia coli lac operon expressed in human cells.
Bioard, D.S. et al.
Biochimica et Biophysica Acta, 113, 68-74 (1992)
Ausubel, F.M., et al.
Current Protocols in Molecular Biology, 1-1 (1995)

实验方案

Blue/white color selection streamlines vector insert differentiation, enhancing cloning efficiency for molecular biologists.

Blue/white color selection streamlines vector insert differentiation, enhancing cloning efficiency for molecular biologists.

Blue/white color selection streamlines vector insert differentiation, enhancing cloning efficiency for molecular biologists.

Blue/white color selection streamlines vector insert differentiation, enhancing cloning efficiency for molecular biologists.

我们的科学家团队拥有各种研究领域经验,包括生命科学、材料科学、化学合成、色谱、分析及许多其他领域.

联系技术服务部门