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69450-M

Sigma-Aldrich

BL21(DE3)感受态细胞 - Novagen

Escherichia coli, rod shaped

同義詞:

BL21 strain

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About This Item

分類程式碼代碼:
41106202
NACRES:
NA.81

product name

BL21(DE3)感受态细胞 - Novagen, BL21(DE3) is a chemically competent E. coli cell suitable for transformation and high level protein expression using a T7 RNA polymerase-IPTG induction system.

生物源

Escherichia coli

品質等級

製造商/商標名

Novagen®

儲存條件

OK to freeze
avoid repeated freeze/thaw cycles

增長模式

adherent or suspension

形態學

rod shaped

技術

microbiological culture: suitable

細胞轉化

transformation efficiency: >2×107 cfu/μg

運輸包裝

dry ice

儲存溫度

−70°C

一般說明

BL21(DE3)是一种化学感受态大肠埃希菌细胞,适用于使用T7 RNA聚合酶IPTG诱导系统进行转化和高水平蛋白质表达。
将DNA质粒转化为大肠埃希菌的常用方法是使用化学感受态细胞。尽管可以在实验室中制备感受态细胞,但使用Novagen制备的感受态细胞可获得更高的效率、重现性和便利性。Novagen感受态细胞代表了可用于蛋白质表达的最广泛选择。每个Novagen感受态细胞株都经过表型和纯度验证,并保证转化效率。如(DE3)所示,
T7表达菌株是噬菌体DE3的溶原性菌。这些宿主携带由lacUV5启动子控制的T7 RNA聚合酶基因的无染色体拷贝。此类菌株适用于利用IPTG作为诱导剂,从在适当的T7表达载体中克隆的靶基因生产蛋白质。
自1990年首次引入BL21以来,它一直是蛋白质表达的金标准。由于缺乏lon和ompT蛋白酶,BL21及其衍生物是许多应用的理想选择。
该产品包含转基因物种(GMO)。在欧盟范围内,转基因物种分别受欧洲议会和理事会的2001/18/EC和2009/41/EC指令及其成员国中国家所实施规范的约束。该法规规定我们有义务索取您以及处理转基因生物的机构的相关信息。请点击这里获得最终用户声明(EUD)表格。

成分

0.4 ml1 ml成分

•2 × 0.2 ml5 × 0.2 mlBL21(DE3)感受态细胞

•2 × 2 ml4 × 2 mlSOC培养基

•2 ng2 ng测试质粒

警告

毒性:多个毒性值,请参阅MSDS(O)

法律資訊

NOVAGEN is a registered trademark of Merck KGaA, Darmstadt, Germany

儲存類別代碼

10 - Combustible liquids

水污染物質分類(WGK)

WGK 2


分析證明 (COA)

輸入產品批次/批號來搜索 分析證明 (COA)。在產品’s標籤上找到批次和批號,寫有 ‘Lot’或‘Batch’.。

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Jiaqi Zhang et al.
International journal of molecular sciences, 25(2) (2024-01-23)
Biofilm dispersal contributes to bacterial spread and disease transmission. However, its exact mechanism, especially that in the pathogen Mycobacterium tuberculosis, is unclear. In this study, the cellulase activity of the M. tuberculosis Rv0062 protein was characterized, and its effect on
Allison M Lynch et al.
Current biology : CB, 32(23), 5189-5199 (2022-11-18)
LIM-domain-containing repeat (LCR) proteins are recruited to strained actin filaments within stress fibers in cultured cells,1,2,3 but their roles at cell-cell junctions in living organisms have not been extensively studied. Here, we show that the Caenorhabditis elegans LCR proteins TES-1/Tes
Serdar Durdagi et al.
Structure (London, England : 1993), 29(12), 1382-1396 (2021-08-18)
The COVID-19 pandemic has resulted in 198 million reported infections and more than 4 million deaths as of July 2021 (covid19.who.int). Research to identify effective therapies for COVID-19 includes: (1) designing a vaccine as future protection; (2) de novo drug
David P Klebl et al.
Structure (London, England : 1993), 28(11), 1238-1248 (2020-08-20)
A host of new technologies are under development to improve the quality and reproducibility of cryoelectron microscopy (cryoEM) grid preparation. Here we have systematically investigated the preparation of three macromolecular complexes using three different vitrification devices (Vitrobot, chameleon, and a
Hamed Mosaei et al.
Molecular cell, 72(2), 263-274 (2018-09-25)
Antibiotic-resistant bacterial pathogens pose an urgent healthcare threat, prompting a demand for new medicines. We report the mode of action of the natural ansamycin antibiotic kanglemycin A (KglA). KglA binds bacterial RNA polymerase at the rifampicin-binding pocket but maintains potency

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