Species:Escherichia coli
Group:B
Strain designation:CpXΔM
Accession number:LMBP 13329
Depositor:Dr T.Mathes1.
1 Experimental Biophysics,Institute of Biology,Humboldt University of Berlin,Berlin,Germany
Containment level:This strain has been assigned the containment level Class 1 following the European Directive 2009/41/EC on the contained use of genetically modified organisms,and its updates(see also the Belgian risk group classification).
Other culture collection numbers:c077
Medium:LB-Lennox
Selection marker:/
Temperature:28°C
Genotype:F-ompT gal dcm hsdSB(rB-mB-)(DE3)manX::ribM metE-
Phenotype:Methionine auxotrophy
Properties:The strain is intended for amino acid specific labelled protein production.As a C41(DE3)derivative,this strain contains DE3,aλprophage carrying the T7 RNA polymerase gene under control of the lacUV5 promoter and lacIq.IPTG is required to induce expression of the T7 RNA polymerase.Protein expression from transforming plasmids containing a T7 promoter-driven expression system is repressed until IPTG induction of T7 RNA polymerase expression occurs.The strain is deficient in the outer membrane protease OmpT which reduces the degradation of heterologous proteins expressed in the strain.
Further information:This strain was created based on E.coli B CmpX13(LMBP 13314)via site specific chromosomal modification.
Original reference:-
Related reference:Mehlhorn et al.,PLoS One.8(2013),e79006[PMID:24223875][DOI:10.1371/journal.pone.0079006]
Mathes et al.,J.Mol.Biol.385(2009),1511-1518[PMID:19027027][DOI:10.1016/j.jmb.2008.11.001]
Restricted use:-BCCM MTA
Refer in your Materials and Methods:
Escherichia coli B CpXΔM(LMBP 13329)is available at BCCM/GeneCorner.It was deposited by Dr T.Mathes.
