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Promega Corporation

JM109 and HB101 Competent Cells

JM109 is a K strain that is recA– and endA– to minimize recombination and improve the quality of plasmid DNA. In addition, the cells carry the F´ episome, which allows blue/white screening. JM109 Competent Cells are available for convenient transformation in two efficiencies: High Efficiency at greater than 108cfu/μg and Subcloning Efficiency at greater than 107cfu/μg.

HB101 cells are recA–, which minimizes recombination events, and contain a restriction-minus background (hsdS20) that allows better representation when cloning methylated DNA. HB101 Competent Cells are suitable fo...

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  • Prices valid for US customers only
Product Size Conc. Catalog # *List Price QTY Add to Cart

Single-Use JM109 Competent Cells, >108cfu/µg

1ml
(20 × 50µl)
- L2005 $ 172.00 Add to cart

JM109 Competent Cells, >107cfu/μg

1ml
(5 × 200μl)
- L1001 $ 101.00 Add to cart

JM109 Competent Cells, >108cfu/μg

1ml
(5 × 200μl)
- L2001 $ 136.00 Add to cart

Single-Use HB101 Competent Cells, >108cfu/µg

1ml
(20 × 50µl)
- L2015 $ 150.00 Add to cart

HB101 Competent Cells, >108cfu/μg

1ml
(5 × 200µl)
- L2011 $ 119.00 Add to cart
This product is discontinued. We suggest L2005 as a replacement.

Single-Use Pro 5-alpha Competent Cells, >109cfu/µg

1ml
(20 × 50µl)
- L1221


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