DL39 (DE3) Chemically Competent Cells, Intact Genomics

Chemically competent DL39 (DE3) E. coli cells are specific for transformation and protein expression in order to uniformly and specifically label e.g. phenylalanine or leucine residues. DL39 (DE3) can also be used to reduce NMR cross-labeling via. transaminase activity for valine, leucine, isoleucine, aspartate, phenylalanine, tyrosine and tryptophan residues.

DL39 (DE3) chemically competent cells provide the highest transformation efficiency in the industry
Quality control is performed following the production of each new lot of product to ensure that it meets the quality standards and specifications designated for the product
Includes DL39 (DE3) competent cells, pUC19 control DNA and recovery medium

Genomic features deficient in the aromatic (TyrB), branched-chain (JIvE), and aspartate (AspC) transaminases. Modiﬁed to contain the T7 expression system.

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