Improvement of the nitrogenase activity in Escherichia coli that expresses the nitrogen fixation-related genes from Azotobacter vinelandii

The transfer of nitrogen fixation (nif) genes from diazotrophs to non-diazotrophic hosts is of increasing interest for engineering biological nitrogen fixation. A recombinant Escherichia coli strain expressing Azotobacter vinelandii 18 nif genes (nifHDKBUSVQENXYWZMF,