推荐产品
产品名称
BL21(DE3)电感受态细胞, for protein expression
生物源
Escherichia coli
等級
Molecular Biology
for molecular biology
增長模式
adherent or suspension
形態學
rod shaped
技術
microbiological culture: suitable
細胞轉化
competent cell type: electrocompetent
transformation efficiency: ≥5 × 109 cfu/μg
運輸包裝
dry ice
儲存溫度
−70°C
一般說明
BL21（DE3）电转感受态细胞是第一个在相同细胞中实现高效克隆和高水平蛋白质表达的细胞。
克隆效率比其它 BL21 细胞制剂提高了 25-1,000 倍，这对于构建复杂的表达文库至关重要。
基因型
F – ompT hsdSB (rB- mB-) gal dcm (DE3)
克隆效率比其它 BL21 细胞制剂提高了 25-1,000 倍，这对于构建复杂的表达文库至关重要。
基因型
F – ompT hsdSB (rB- mB-) gal dcm (DE3)
特點和優勢
BL21（DE3）电转感受态细胞（>5 × 109 cfu/μg）前所未有的转化效率消除了将质粒从克隆菌株转移到表达菌株的需要，从而为典型的克隆和表达实验节省了数天的工作时间。
成分
- BL21（DE3）电转感受态细胞
- pUC19转化对照DNA
- 表达恢复培养基
相關產品
产品编号
说明
价格
儲存類別代碼
10 - Combustible liquids
Julianne M Troiano et al.
eLife, 10 (2021-01-16)
Under high light, oxygenic photosynthetic organisms avoid photodamage by thermally dissipating absorbed energy, which is called nonphotochemical quenching. In green algae, a chlorophyll and carotenoid-binding protein, light-harvesting complex stress-related (LHCSR3), detects excess energy via a pH drop and serves as
Felix Nicolaus et al.
eLife, 10 (2021-02-09)
We follow the cotranslational biosynthesis of three multispanning Escherichia coli inner membrane proteins in vivo using high-resolution force profile analysis. The force profiles show that the nascent chain is subjected to rapidly varying pulling forces during translation and reveal unexpected
Salvatore Di Girolamo et al.
Microbial cell factories, 19(1), 170-170 (2020-08-29)
Miniaturization of biochemical reaction volumes within artificial microcompartments has been the key driver for directed evolution of several catalysts in the past two decades. Typically, single cells are co-compartmentalized within water-in-oil emulsion droplets with a fluorogenic substrate whose conversion allows
实验方案
BL21(DE3) Electrocompetent Cells are provided in 25 μL aliquots, sufficient for one reaction. Transformation is carried out in a 0.1 cm gap cuvette. Optimal settings for electroporation are listed in the table below. Note that alternate settings result in transformation efficienes about 20-50% lower. Typical time constants are 3.5 to 4.5 msec.
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