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URL: http://www.addgene.org/61918

Proper Citation: RRID:Addgene_61918

Insert Name: none

Bacterial Resistance: None

Defining Citation: PMID:21925267

Vector Backbone Description: Vector Backbone:none; Vector Types:; Bacterial Resistance:None

Comments: Genotype = cyo ilvE avtA aspC hisG argH metA Precursor strain = ML26 modified from the parent Escherichia coli C43(DE3) strain Selective amino acid labeling (and/or requirement) = (Ala#), Ile, Leu*, Tyr#, Val, His, Arg, Met *In the presence of 0.4-1 mM Tyr, tyrB is repressed and Leu is required for growth in minimal medium. This strategy can only be applicable for a short-term cultivation but not suitable for a long-term cultivation for heterologous expression of foreign genes [Methods 55, 370-378 (2011)]. #In the presence of 0.4-1 mM Tyr, tyrB is repressed and Tyr is required for growth in minimal medium. Under these conditions, this strain can also be used for selective labeling of the input Tyr and/or Ala label(s), although minor diffusion of the input label(s) can occur. Note that this strategy can only be applicable for a short-term cultivation but not suitable for a long-term cultivation for heterologous expression of foreign geness [Methods 55, 370-378 (2011)]. Each target gene was deleted from the chromosome of C43 (DE3) E. coli strain using λ-Red recombination system. Supplemental documents contain a list of PCR primers used for verification of each knocked-out gene as well as an image showing PCR results for this strain.

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