@article{joerger_wolfinger_bishop_1991, title={The gene encoding dinitrogenase reductase 2 is required for expression of the second alternative nitrogenase from Azotobacter vinelandii}, volume={173}, number={14}, journal={Journal of Bacteriology}, author={Joerger, R. D. and Wolfinger, E. D. and Bishop, P. E.}, year={1991}, pages={4440} }
 @article{joerger_loveless_pau_mitchenall_simon_bishop_1990, title={NUCLEOTIDE-SEQUENCES AND MUTATIONAL ANALYSIS OF THE STRUCTURAL GENES FOR NITROGENASE-2 OF AZOTOBACTER-VINELANDII}, volume={172}, ISSN={["1098-5530"]}, DOI={10.1128/jb.172.6.3400-3408.1990}, abstractNote={The nucleotide sequence (6,559 base pairs) of the genomic region containing the structural genes for nitrogenase 2 (V nitrogenase) from Azotobacter vinelandii was determined. The open reading frames present in this region are organized into two transcriptional units. One contains vnfH (encoding dinitrogenase reductase 2) and a ferredoxinlike open reading frame (Fd). The second one includes vnfD (encoding the alpha subunit of dinitrogenase 2), vnfG (encoding a product similar to the delta subunit of dinitrogenase 2 from A. chroococcum), and vnfK (encoding the beta subunit of dinitrogenase 2). The 5'-flanking regions of vnfH and vnfD contain sequences similar to ntrA-dependent promoters. This gene arrangement allows independent expression of vnfH-Fd and vnfDGK. Mutant strains (CA80 and CA11.80) carrying an insertion in vnfH are still able to synthesize the alpha and beta subunits of dinitrogenase 2 when grown in N-free, Mo-deficient, V-containing medium. A strain (RP1.11) carrying a deletion-plus-insertion mutation in the vnfDGK region produced only dinitrogenase reductase 2.}, number={6}, journal={JOURNAL OF BACTERIOLOGY}, author={JOERGER, RD and LOVELESS, TM and PAU, RN and MITCHENALL, LA and SIMON, BH and BISHOP, PE}, year={1990}, month={Jun}, pages={3400–3408} }