Product Class: Strain

E. coli K12 ER2738

Limit of 1 per order. Although this product is free of charge, freight charges will apply. For US customers, available via phone ordering only (1-800-632-5227). For international customers, please contact your local NEB subsidiary or distributor.
Catalog #SizeConcentration


A suspension of E. coli strain ER2738 which has been grown in LB medium and brought to 50% glycerol.


proA+B+ lacIq Δ(lacZ)M15 zzf::Tn10(TetR)/ fhuA2 glnV Δ(lac-proAB) thi-1 Δ(hsdS-mcrB)5

Properties and Usage

Storage Temperature


Supporting Documents

The Product Summary Sheet, or Data Card, includes details for how to use the product, as well as details of its formulation and quality controls. The following file naming structure is used to name the majority of these document files: [Catalog Number]Datasheet-Lot[Lot Number]. For those product lots not listed below, please contact NEB at or fill out the Technical Support Form for appropriate document.


  1. This strain is an fhuA2 version of E. coli NM522 in which the F' can be selected for using tetracycline.


  1. Woodcock, D.M. et al. (1989). Nucl. Acids Res.. 17, 3469-3478.
  2. Gough, J. and Murray, N. (1983). J. Mol. Biol.. 166, 1-19.