MAX Efficiency® Stbl2™ Competent Cells are high-efficiency chemically competent cells specifically designed for cloning unstable inserts. In addition to recA1, a unique set of genetic markers allow for stable cloning of direct repeat and retroviral sequences (1) and tandem array genes (2). MAX Efficiency® Stbl2™ Competent Cells offer:

• >1 x 10⁹ transformants/flg for cloning rare sequences

• Elimination of mcrBC-hsdRMS-mrr and mutation of mcrA allows cloning of methylated genomic sequences (1)

• Unique genotype stabilizes direct repeat and retroviral sequences such as SIV and HIV (1)

• Greatly increases plasmid yield and quality due to endA1 mutation