Abstract
Abstract The fdhF gene of Escherichia coli , coding for at least one component of benzyl viologen-linked formate dehydrogenase (FDH-BV) activity, was isolated on a ColE1- fdhF hybrid plasmid from the Clarke and Carbon colony bank. Endonuclease restriction maps of this plasmid and its pBR322-subcloned derivative, pLW06, were constructed. Various hybrid plasmids were further obtained by deletion of endonuclease-cleaved fragments from pLW06 DNA. Their complementation pattern was analyzed after introduction into different fdhF mutant strains. The fdhF gene was shown to be located on a 5.5 kb Bam HI- Pvu II-DNA fragment, which restored FDH-BV activity to the wild-type level.
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