CGSC Strain#: 14166
Strain Designation: ER2796      Source of Strain: E.A. Raleigh
Sex: F- Chromosomal Markers: fhuA2::IS2, glnX44(AS), λ^-, e14-, trp-31, dcm-6, yedZ3069::Tn10, hisG1, argG6, rpsL104, Δdam-16::KanR, xyl-7, mtlA2, metB1, Δ(mcrC-mrr)114:IS10
Strain Comments:

• glnX44(AS)-- Mutation is a C to T transition at nucleotide 34 (3rd position of the anticodon)
• e14--- : Loss of the e14 element makes the strain McrA^-.
• dcm-6-- has a Gln to Arg mutation,also a TGG to TGA termination mutation,which results in dcm-vsr message degradation and causes a Vsr^- phenotype (Dar 1993).
• hisG1-- This mutation has been reported as either a frameshift or a 36 nt deletion
• Δ(mcrC-mrr)114:IS10-- Deletes mcrBC-hsdSMR-mrr
• fhuA2::IS2 was formerly called fhuA2
• glnX44(AS) was formerly called su⁺_II
• glnX44(AS) was formerly called supE44
• glnX44(AS) was formerly called glnV44
• xyl-7 was formerly called xylA7
• = strep-resistant
• = tetracycline resistant
• ::IS2 = Insertion of IS2
• AS = amber(UAG) suppressor

References:

• Anton, BP, EF Mongodin, S Agrawal, A Fomenkov, DR Byrd, RJ Roberts, EA Raleigh 2015. Complete Genome Sequence of ER2796, a DNA Methyltransferase-Deficient Strain of Escherichia coli K-12. PLoS ONE 10(5):e0127446-.