Use of clostridial methyltransferases for generating novel strains
View Patent ↗This invention provides isolated polynucleotides encoding DNA Type I methyltransferase and uses thereof for improving transformation efficiencies of exogenous and endogenous plasmid DNA into Clostridial hosts.
1. A method of generating a bacterial recombinant cell expressing a DNA Type I methyltransferase having biological activities, comprising:
(a) introducing a methylation vector into a bacterial host cell wherein said methylation vector expresses a DNA Type I methyltransferase polynucleotide; and
(b) introducing a transforming vector into the bacterial host cell wherein said transforming vector comprises plasmid DNA that is methylated by said methylation vector, wherein the methylation vector is pCOSMTI-1.
2. A method of generating a bacterial recombinant cell expressing a DNA Type I methyltransferase having biological activities, comprising:
(a) introducing a methylation vector into a bacterial host cell wherein said methylation vector expresses a DNA Type I methyltransferase polynucleotide; and
(b) introducing a transforming vector into the bacterial host cell wherein said transforming vector comprises plasmid DNA that is methylated by said methylation vector, wherein the methylation vector is pCOSMTI-2.
3. A method of generating a bacterial recombinant cell expressing a DNA Type I methyltransferase having biological activities, comprising:
(a) introducing a methylation vector into a bacterial host cell wherein said methylation vector expresses a DNA Type I methyltransferase polynucleotide; and
(b) introducing a transforming vector into the bacterial host cell wherein said transforming vector comprises plasmid DNA that is methylated by said methylation vector, wherein the methylation vector is pCOSMTI-12.