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 for vectors that do not require α-complementation for blue/white screening.

For researchers doing more than one transformation, competent cells are available in standard format (200µl aliquots). For added convenience, single-use competent cells (50µl aliquots) also are offered.

HB101 Competent Cells are prepared according to a modified procedure of Hanahan.

HB101 Genotype: F–, thi-1, hsdS20 (r_B^–, m_B^–), supE44, recA13, ara-14, leuB6, proA2, lacY1, galK2, rpsL20 (str^r), xyl-5, mtl-1.

Reference

1. Hanahan, D. (1985) DNA Cloning, Vol. 1, Glover, D., ed., IRL Press, Ltd., 109.