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EMD Millipore Novagen™ BL21(DE3) Singles™ Competent Cells Available on GSA/VA Contract for Federal Government customers only.

BL21(DE3) is a chemically competent E. coli cell suitable for transformation and high level protein expression using a T7 RNA polymerase-IPTG induction system.

Manufacturer:  Millipore Sigma 702353

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Catalog No. 70-235-3

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BL21 strains are the most widely used hosts for protein expression from pET recombinants and have the advantage of being deficient in both lon and ompT proteases.
Description & Specifications


Guaranteed efficiency: >2 x 107 cfu/μg
11 reactions
Store at ≤-70deg.C
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