Products & Reviews

The ABLE C strain and the ABLE K strain help solve issues associated with toxic clones. The ABLE C strain reduces the copy number of ColE1-derived plasmids, e.g. pUC and pBluescript, by approximately 4-fold (compared to the XL1-Blue strain) and the ABLE K strain reduces the copy number of these plasmids approximately 10-fold. 

ArcticExpress Competent Cells are engineered to address the common bacterial gene expression hurdle of protein insolubility. These cells are derived from the high-performance Stratagene BL21-Gold competent cells, enabling efficient high-level expression of heterologous proteins in E. coli.

In addition to enhancing protein solubility, we have combined our cold-adapted technology with our premiere BL21-CodonPlus competent cells to further increase your chances of protein expression success. 

In addition to enhancing protein solubility, we have combined our cold-adapted technology with our premiere BL21-CodonPlus competent cells to further increase your chances of protein expression success. 

ArcticExpress Competent Cells are engineered to address the common bacterial gene expression hurdle of protein insolubility. These cells are derived from the high-performance Stratagene BL21-Gold competent cells, enabling efficient high-level expression of heterologous proteins in E. coli.

In addition to enhancing protein solubility, we have combined our cold-adapted technology with our premiere BL21-CodonPlus competent cells to further increase your chances of protein expression success. 

In addition to enhancing protein solubility, we have combined our cold-adapted technology with our premiere BL21-CodonPlus competent cells to further increase your chances of protein expression success.

The exclusive BacterioMatch II two-hybrid system is an efficient method for detecting protein-protein interactions in vivo. The BacterioMatch II system offers the ability to screen libraries for harder-to-find binding partners with reduced background.  Fast results  Bacterial transformation - no new techniques to learn  Readily detect protein-protein interactions  Convenient dual reporter to validate putative positives…

The exclusive BacterioMatch II two-hybrid system is an efficient method for detecting protein-protein interactions in vivo. The BacterioMatch II system offers the ability to screen libraries for harder-to-find binding partners with reduced background.  Fast results  Bacterial transformation - no new techniques to learn  Readily detect protein-protein interactions  Convenient dual reporter to validate putative positives…

The exclusive BacterioMatch II two-hybrid system is an efficient method for detecting protein-protein interactions in vivo. The BacterioMatch II system offers the ability to screen libraries for harder-to-find binding partners with reduced background.  Fast results  Bacterial transformation - no new techniques to learn  Readily detect protein-protein interactions  Convenient dual reporter to validate putative positives…

BL21-Gold competent cells feature the high transformation efficiency phenotype (Hte) and have the gene encoding endonuclease I (endA) inactivated. 

BL21-Gold competent cells feature the high transformation efficiency phenotype (Hte) and have the gene encoding endonuclease I (endA) inactivated. 

BL21-Gold competent cells feature the high transformation efficiency phenotype (Hte) and have the gene encoding endonuclease I (endA) inactivated.

BL21-CodonPlus strains are engineered to contain extra copies of genes that encode the tRNAs that most frequently limit translation of heterologous proteins in E. coli. They are ideal for difficult protein expression, especially when codon bias is a problem.

BL21-CodonPlus strains are engineered to contain extra copies of genes that encode the tRNAs that most frequently limit translation of heterologous proteins in E. coli. They are ideal for difficult protein expression, especially when codon bias is a problem.

L21-CodonPlus strains are engineered to contain extra copies of genes that encode the tRNAs that most frequently limit translation of heterologous proteins in E. coli. They are ideal for difficult protein expression, especially when codon bias is a problem.

BL21-CodonPlus strains are engineered to contain extra copies of genes that encode the tRNAs that most frequently limit translation of heterologous proteins in E. coli . They are ideal for difficult protein expression, especially when codon bias is a problem.

BL21-CodonPlus strains are engineered to contain extra copies of genes that encode the tRNAs that most frequently limit translation of heterologous proteins in E. coli. They are ideal for difficult protein expression, especially when codon bias is a problem.

BL21-CodonPlus strains are engineered to contain extra copies of genes that encode the tRNAs that most frequently limit translation of heterologous proteins in E. coli. They are ideal for difficult protein expression, especially when codon bias is a problem.

The basic BL21 strain does not contain the T7 RNA polymerase gene and can be used with non-T7 RNA polymerase protein expression systems. 

The basic BL21 strain does not contain the T7 RNA polymerase gene and can be used with non-T7 RNA polymerase protein expression systems. 

The basic BL21 strain does not contain the T7 RNA polymerase gene and can be used with non-T7 RNA polymerase protein expression systems. 

Replicating eukaryotic DNA in prokaryotic cells can be problematic. Particular eukaryotic genes may contain inverted repeats or secondary structures, such as Z-DNA, that can be rearranged or deleted by E. coli DNA repair systems. The SURE competent cells are deficient in the E. coli genes involved in the rearrangement and deletion of DNA, thus improving cloning efficiencies of DNA containing irregular structures in prokaryoti…

These competent cells offer the highest transformation efficiencies available, enabling dramatically improved transformation efficiencies when cloning large plasmids and ligated DNA.

This collection of competent cells provides customers with classic E. coli strains that have been engineered to become competent for use in cloning experiments.