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DMT Chemically Competent Cell
DMT Chemically Competent Cell is specifically designed for chemical transformation of DNA. It permits a transformation efficiency of over 108cfu/μg DNA (tested by pUC19 plasmid DNA).
| Cat. No. | CD501 |
| Specification | CD511-01: 5×50 μl |
CD501-02: 20×50 μl | |
| Storage: | at -70oC for six months |
| Genotype | F- φ80 lacZΔM15 Δ(lacZYA-argF)U169 recA1 endA1 hsdR17(rK -, mK +) phoA supE44 thi-1 gyrA96 relA1 tonA |
| Features | • High transformation efficiency: >108 cfu/μg ( pUC19 DNA). |
| • Resistance to T1 and T5 phage. | |
| • In vivo digestion of methylated DNA, suitable for site-directed mutagenesis. | |
| Procedures | 1. Thaw a vial of 50 μl DMT Chemically Competent Cell on ice, add target DNA into the tube and mix gently. Incubate the cells on ice for 30 minutes. |
| 2.Heat-shock the cells for 45 seconds at 42oC, and then quickly remove the tube from the 42oC water bath and place them on ice for 2 minutes. Do not shake the tube during this procedure. | |
| 3. Add 500 μl of sterile SOC medium or LB medium (no antibiotic) into the tube, mix well and shake at 37oC for 1 hour at 200 rpm to resuscitate cells. | |
| 4. According to the experiment requirement (plasmid, transformation of recombinant ligation product), add different volumes of transformed cells into corresponding antibiotic-containing LB medium. Spread the transformed cells on selective plate. Invert the plate and incubate at 37oC overnight. | |
| Notes | High efficiency transformation can be achieved by transforming cells immediately following thawing. |
| Avoid repeated thawing. | |
| Avoid pipetting cells. | |
| Gentle handling is required for the entire procedure. |





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