跳转至内容
Merck

S9811

Sigma-Aldrich

S-Gal®

reagent for selection of recombinant bacterial clones

别名:

3,4-环己烯内脂n β-D-吡喃半乳糖苷

登录查看公司和协议定价


About This Item

经验公式(希尔记法):
C19H22O9
分子量:
394.37
分類程式碼代碼:
12352200
PubChem物質ID:
NACRES:
NA.85

等級

for molecular biology

無菌

non-sterile

化驗

≥95% (HPLC)

形狀

powder

溶解度

DMF: 50 mg/mL

適合性

suitable for β-galactosidase test

儲存溫度

room temp

SMILES 字串

OC[C@H]1O[C@@H](Oc2cc3OC(=O)C4=C(CCCC4)c3cc2O)[C@H](O)[C@@H](O)[C@H]1O

InChI

1S/C19H22O9/c20-7-14-15(22)16(23)17(24)19(28-14)27-13-6-12-10(5-11(13)21)8-3-1-2-4-9(8)18(25)26-12/h5-6,14-17,19-24H,1-4,7H2/t14-,15+,16+,17-,19-/m1/s1

InChI 密鑰

HDJJDRXZHJRVGA-DIKXUDHVSA-N

一般說明

S-Gal®是一种可高温高压灭菌的β-半乳糖苷酶发色底物,可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。S-Gal® 设计用于代替X-Gal对lac+表型进行蓝白斑重组细菌菌落的筛选。

應用

适用于选择具有lac+表型的重组细菌菌落。S-Gal®可以高压灭菌,可以在高压灭菌前加入到含有琼脂的细菌肉汤培养基中。
S-Gal是一种专利保护的可高压灭菌的β-半乳糖苷酶生色底物,可在蓝白斑筛选lac+表型重组菌落时,用X-Gal替代X-Gal。

特點和優勢

  • 具有比X-gal更强烈的色彩对比
  • 非常适合在自动菌落计数器上使用
  • 可高温高压灭菌,使用简单
  • 无需制备储存溶液
当S-Gal被β-半乳糖苷酶切割后,所生成的产物会螯合铁离子,形成黑色的不溶沉淀物。 在S-Gal和三价铁离子存在下生长的Lac+ 菌落会变成强烈的黑色,从而易于对 Lac+Lac- 菌落进行区分。 S-Gal可高压灭菌,并且可在高压灭菌前添加至您选择的培养基中。S-Gal对光不敏感,不需要任何光源保护。

其他說明

含有S-Gal和IPTG的可高压灭菌可微波的生长培养基。
铁或铁3+ 离子的存在对于显色是必需的,并且必须添加至任何S-Gal中®
配方中。用S-Gal配制的培养基®由于存在柠檬酸铁铵,因此呈中等的暗度。这种较暗的背景通常会为自动菌落计数或分离提供增强的对比度。

原則

当S-Gal®被β-半乳糖苷酶裂解后,生成的产物可螯合三价铁离子,形成黑色的不溶沉淀物。在S-Gal存在下生长的Lac+菌落®和铁离子会变成强烈的黑色,从而可轻松区分lac+和lac-菌落。

重構

S-Gal的储存溶液® 可以通过将50 mg/ml溶解在二甲基甲酰胺(DMF)中进行制备,并在-20°C下储存。高压灭菌前,将S-Gal® (从300 mg/L的储备溶液中取出)和柠檬酸铁铵(500 mg/L)加入琼脂培养基。

法律資訊

S-GAL is a registered trademark of Merck KGaA, Darmstadt, Germany

象形圖

Exclamation mark

訊號詞

Warning

危險聲明

危險分類

Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

標靶器官

Respiratory system

儲存類別代碼

11 - Combustible Solids

水污染物質分類(WGK)

WGK 3

閃點(°F)

Not applicable

閃點(°C)

Not applicable

個人防護裝備

dust mask type N95 (US), Eyeshields, Gloves


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

Emiley A Eloe et al.
Applied and environmental microbiology, 74(20), 6298-6305 (2008-08-30)
Motility is a critical function needed for nutrient acquisition, biofilm formation, and the avoidance of harmful chemicals and predators. Flagellar motility is one of the most pressure-sensitive cellular processes in mesophilic bacteria; therefore, it is ecologically relevant to determine how
Christopher Voigt
Synthetic Biology: Methods for part/device characterization and chassis engineering (2011)
Development and characterization of ten polymorphic microsatellites isolated from the scallop Argopecten purpuratus.
C J Mandiola-Quililongo et al.
Journal of genetics, 91(1), e12-e14 (2012-05-04)
S Fitzpatrick et al.
Infection, genetics and evolution : journal of molecular epidemiology and evolutionary genetics in infectious diseases, 9(2), 206-209 (2008-12-09)
Rhodnius prolixus is the main vector of Chagas disease in Venezuela, where it is found colonising rural housing consisting of unplastered adobe walls with palm and/or metal roofs. Vector control failure in Venezuela may be due to the invasion of
Wanna Chaijaroenkul et al.
Malaria journal, 10, 42-42 (2011-02-16)
Plasmodium falciparum chloroquine resistance (CQR) transporter protein (PfCRT) is known to be the important key of CQR. Recent studies have definitively demonstrated a link between mutations in the gene pfcrt and resistance to chloroquine in P. falciparum. Although these mutations

商品

General protocols for growth of competent cells and their transformation (uptake of DNA).

General protocols for growth of competent cells and their transformation (uptake of DNA).

General protocols for growth of competent cells and their transformation (uptake of DNA).

General protocols for growth of competent cells and their transformation (uptake of DNA).

查看所有结果

实验方案

Technical Article on competent cells. Transformation is a process by which some bacteria take up foreign genetic material (naked DNA) from the environment.

Technical Article on competent cells. Transformation is a process by which some bacteria take up foreign genetic material (naked DNA) from the environment.

Technical Article on competent cells. Transformation is a process by which some bacteria take up foreign genetic material (naked DNA) from the environment.

Technical Article on competent cells. Transformation is a process by which some bacteria take up foreign genetic material (naked DNA) from the environment.

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