Abstract
Cell-free extracts of nifF and nifJ mutants of Klebsiella pneumoniae are unable to couple acetylene reduction (N2 fixation) by nitrogenase to the oxidation of organic metabolites. However, nifF and nifJ mutants can complement each other in vitro to establish the coupling. This indicates that the products of the nifF and nifJ genes constitute essential elements of the physiological electron pathway to nitrogenase. The electron-transfer-active product of the nifF gene, a flavoprotein, has been purified.
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- Benemann J. R., Yoch D. C., Valentine R. C., Arnon D. I. The electron transport system in nitrogen fixation by Azotobacter. I. Azotoflavin as an electron carrier. Proc Natl Acad Sci U S A. 1969 Nov;64(3):1079–1086. doi: 10.1073/pnas.64.3.1079. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Burnett R. M., Darling G. D., Kendall D. S., LeQuesne M. E., Mayhew S. G., Smith W. W., Ludwig M. L. The structure of the oxidized form of clostridial flavodoxin at 1.9-A resolution. J Biol Chem. 1974 Jul 25;249(14):4383–4392. [PubMed] [Google Scholar]
- Cusanovich M. A., Edmondson D. E. The isolation and characterization of Rhodospirillum rubrum flavodoxin. Biochem Biophys Res Commun. 1971 Oct 15;45(2):327–336. doi: 10.1016/0006-291x(71)90822-9. [DOI] [PubMed] [Google Scholar]
- Dixon R., Cannon F., Kondorosi A. Construction of a P plasmid carrying nitrogen fixation genes from Klebsiella pneumoniae. Nature. 1976 Mar 18;260(5548):268–271. doi: 10.1038/260268a0. [DOI] [PubMed] [Google Scholar]
- Dubourdieu M., Le Gall J. Chemical study of two flavodoxins extracted from sulfate reducing bacteria. Biochem Biophys Res Commun. 1970 Mar 12;38(5):965–972. doi: 10.1016/0006-291x(70)90816-8. [DOI] [PubMed] [Google Scholar]
- Faeder E. J., Siegel L. M. A rapid micromethod for determination of FMN and FAD in mixtures. Anal Biochem. 1973 May;53(1):332–336. doi: 10.1016/0003-2697(73)90442-9. [DOI] [PubMed] [Google Scholar]
- Hill S., Kavanagh E. P. Roles of nifF and nifJ gene products in electron transport to nitrogenase in Klebsiella pneumoniae. J Bacteriol. 1980 Feb;141(2):470–475. doi: 10.1128/jb.141.2.470-475.1980. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Hinkson J. W. Azotobacter free-radical flavoprotein. Preparation and properties of the apoprotein. Biochemistry. 1968 Jul;7(7):2666–2672. doi: 10.1021/bi00847a033. [DOI] [PubMed] [Google Scholar]
- Knight E., Jr, Hardy R. W. Isolation and characteristics of flavodoxin from nitrogen-fixing Clostridium pasteurianum. J Biol Chem. 1966 Jun 25;241(12):2752–2756. [PubMed] [Google Scholar]
- LOWRY O. H., ROSEBROUGH N. J., FARR A. L., RANDALL R. J. Protein measurement with the Folin phenol reagent. J Biol Chem. 1951 Nov;193(1):265–275. [PubMed] [Google Scholar]
- Massey V., Hemmerich P. A photochemical procedure for reduction of oxidation-reduction proteins employing deazariboflavin as catalyst. J Biol Chem. 1977 Aug 25;252(16):5612–5614. [PubMed] [Google Scholar]
- Nagatani H. H., Brill W. J. Nitrogenase V. The effect of Mo, W and V on the synthesis of nitrogenase components in Azotobacter vinelandii. Biochim Biophys Acta. 1974 Aug 7;362(1):160–166. doi: 10.1016/0304-4165(74)90037-3. [DOI] [PubMed] [Google Scholar]
- O'Farrell P. H. High resolution two-dimensional electrophoresis of proteins. J Biol Chem. 1975 May 25;250(10):4007–4021. [PMC free article] [PubMed] [Google Scholar]
- Orme-Johnson W. H., Hamilton W. D., Jones T. L., Tso M. Y., Burris R. H., Shah V. K., Brill W. J. Electron paramagnetic resonance of nitrogenase and nitrogenase components from Clostridium pasteurianum W5 and Azotobacter vinelandii OP. Proc Natl Acad Sci U S A. 1972 Nov;69(11):3142–3145. doi: 10.1073/pnas.69.11.3142. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Roberts G. P., MacNeil T., MacNeil D., Brill W. J. Regulation and characterization of protein products coded by the nif (nitrogen fixation) genes of Klebsiella pneumoniae. J Bacteriol. 1978 Oct;136(1):267–279. doi: 10.1128/jb.136.1.267-279.1978. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Shah V. K., Davis L. C., Brill W. J. Nitrogenase. I. Repression and derepression of the iron-molybdenum and iron proteins of nitrogenase in Azotobacter vinelandii. Biochim Biophys Acta. 1972 Feb 28;256(2):498–511. doi: 10.1016/0005-2728(72)90078-3. [DOI] [PubMed] [Google Scholar]
- St John R. T., Johnston H. M., Seidman C., Garfinkel D., Gordon J. K., Shah V. K., Brill W. J. Biochemistry and genetics of Klebsiella pneumoniae mutant strains unable to fix N2. J Bacteriol. 1975 Mar;121(3):759–765. doi: 10.1128/jb.121.3.759-765.1975. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Yates M. G. Electron transport to nitrogenase in Azotobacter chroococcum: Azotobacter flavodoxin hydroquinone as an electron donor. FEBS Lett. 1972 Oct 15;27(1):63–67. doi: 10.1016/0014-5793(72)80410-1. [DOI] [PubMed] [Google Scholar]
- Yoch D. C. Electron transport carriers involved in nitrogen fixation by the coliform, Klebsiella pneumoniae. J Gen Microbiol. 1974 Jul;83(0):153–164. doi: 10.1099/00221287-83-1-153. [DOI] [PubMed] [Google Scholar]