추천 제품
product name
BL21(DE3) Competent Cells - 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.
생물학적 소스
Escherichia coli
Quality Level
제조업체/상표
Novagen®
저장 조건
OK to freeze
avoid repeated freeze/thaw cycles
성장 모드
adherent or suspension
형태학
rod shaped
기술
microbiological culture: suitable
세포 형질전환
transformation efficiency: >2×107 cfu/μg
배송 상태
dry ice
저장 온도
−70°C
일반 설명
A common method for transformation of DNA plasmids into E. coli is the use of chemically competent cells. Although competent cells can be prepared in the laboratory, greater efficiency, reproducibility, and convenience are achieved using Novagen prepared competent cells. Novagen competent cells represent the widest selection available for protein expression. Every Novagen competent cell strain is verified for phenotype and purity, and is guaranteed fortransformation efficiency.
T7 expression strains are lysogens of bacteriophageDE3, as indicated by the (DE3). These hosts carry a chromosomal copy of the T7 RNA polymerase gene under control of the lacUV5 promoter. Such strains are suitable for production of protein from target genes cloned in appropriate T7 expression vectors, using IPTG as an inducer.
BL21 has been the gold standard for protein expression since it was first introduced in 1990. Deficient in lon and ompT proteases, BL21 and its derivatives are ideal for many applications.
T7 expression strains are lysogens of bacteriophageDE3, as indicated by the (DE3). These hosts carry a chromosomal copy of the T7 RNA polymerase gene under control of the lacUV5 promoter. Such strains are suitable for production of protein from target genes cloned in appropriate T7 expression vectors, using IPTG as an inducer.
BL21 has been the gold standard for protein expression since it was first introduced in 1990. Deficient in lon and ompT proteases, BL21 and its derivatives are ideal for many applications.
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.
This product contains genetically modified organisms (GMO). Within the EU GMOs are regulated by Directives 2001/18/EC and 2009/41/EC of the European Parliament and of the Council and their national implementation in the member States respectively. This legislation obliges us to request certain information about you and the establishment where the GMOs are being handled. Click here for Enduser Declaration (EUD) Form.
성분
0.4 ml1 mlComponent
•2 × 0.2 ml5 × 0.2 mlBL21(DE3) Competent Cells
•2 × 2 ml4 × 2 mlSOC Medium
•2 ng2 ngTest Plasmid
•2 × 0.2 ml5 × 0.2 mlBL21(DE3) Competent Cells
•2 × 2 ml4 × 2 mlSOC Medium
•2 ng2 ngTest Plasmid
경고
Toxicity: Multiple Toxicity Values, refer to MSDS (O)
법적 정보
NOVAGEN is a registered trademark of Merck KGaA, Darmstadt, Germany
Storage Class Code
10 - Combustible liquids
WGK
WGK 2
시험 성적서(COA)
제품의 로트/배치 번호를 입력하여 시험 성적서(COA)을 검색하십시오. 로트 및 배치 번호는 제품 라벨에 있는 ‘로트’ 또는 ‘배치’라는 용어 뒤에서 찾을 수 있습니다.
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
문서
Colony PCR reagents and our colony PCR protocol using REDExtract-N-Amp™ PCR ReadyMix™ and JumpStart™ REDTaq® PCR ReadyMix™ reagents.
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