Markerless dna production

Abstract

Provided herein are genetically modified microorganisms comprising a nonsense mutation in a gene encoding an efflux pump or import protein, and a vector encoding a suppressor tRNA that enables translation of the efflux pump or import protein, mitigating the effect of the nonsense mutation. Also provided are methods of producing a vector or markerless DNA using the genetically modified microorganisms provided herein.

Dependencies are inferred from the claim text.