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Name IM93B
Genotype mcrA Δ(mrr-hsdRMS-mcrBC) Φ80lacZΔM15 ΔlacX74 recA1 araD139 Δ(ara-leu)7697 galU galK rpsL endA1 nupG Δdcm ΩPN25-hsdMS/S (CC93-2/CC93-1) ΩPhelp-hsdMS (CC93-3)
Phenotype streptomycin resistant
Sources LMBP 9584
References PMID:26015493


This bacterial host strain was derived from E. coli K12 DH10B by deleting the dcm gene encoding cytosine methylation. Additionally, the hsdMS genes encoding methylase and specificity genes (from Staphylococcus aureus sequence type 93 - JKD6159) were introduced onto the chromosome at neutral locations via recombineering.
The strain can be transformed efficiently with large plasmids due to deoR (nupG) mutation.
Plasmids isolated from this strain transform S. aureus sequence type 93 - JKD6159 at high efficiency.