Published in Science on April 04, 1986
Purification of a second alternative nitrogenase from a nifHDK deletion strain of Azotobacter vinelandii. J Bacteriol (1988) 2.21
Transcriptional regulation of nitrogen fixation by molybdenum in Azotobacter vinelandii. J Bacteriol (1986) 1.85
Nucleotide sequence and genetic analysis of the nifB-nifQ region from Azotobacter vinelandii. J Bacteriol (1988) 1.69
The vanadium nitrogenase of Azotobacter chroococcum. Purification and properties of the VFe protein. Biochem J (1987) 1.68
The presence of five nifH-like sequences in Clostridium pasteurianum: sequence divergence and transcription properties. Nucleic Acids Res (1988) 1.60
Nucleotide sequence and mutational analysis of the structural genes (anfHDGK) for the second alternative nitrogenase from Azotobacter vinelandii. J Bacteriol (1989) 1.54
Maturation of nitrogenase: a biochemical puzzle. J Bacteriol (2005) 1.52
Nucleotide sequences and mutational analysis of the structural genes for nitrogenase 2 of Azotobacter vinelandii. J Bacteriol (1990) 1.38
The vanadium nitrogenase of Azotobacter chroococcum. Reduction of acetylene and ethylene to ethane. Biochem J (1988) 1.37
Tn5-induced mutants of Azotobacter vinelandii affected in nitrogen fixation under Mo-deficient and Mo-sufficient conditions. J Bacteriol (1986) 1.36
Multiple chromosomes of Azotobacter vinelandii. J Bacteriol (1989) 1.33
Identification of an alternative nitrogenase system in Rhodospirillum rubrum. J Bacteriol (1991) 1.31
Nitrogen fixation in molybdenum-deficient continuous culture by a strain of Azotobacter vinelandii carrying a deletion of the structural genes for nitrogenase (nifHDK). Biochem J (1986) 1.30
Two nifA-like genes required for expression of alternative nitrogenases by Azotobacter vinelandii. J Bacteriol (1989) 1.26
The chaperone GroEL is required for the final assembly of the molybdenum-iron protein of nitrogenase. Proc Natl Acad Sci U S A (2001) 1.23
The vanadium nitrogenase of Azotobacter chroococcum. Purification and properties of the Fe protein. Biochem J (1988) 1.22
The gene encoding dinitrogenase reductase 2 is required for expression of the second alternative nitrogenase from Azotobacter vinelandii. J Bacteriol (1991) 1.07
Phenotypic characterization of a tungsten-tolerant mutant of Azotobacter vinelandii. J Bacteriol (1996) 1.01
Expression of the nifBfdxNnifOQ region of Azotobacter vinelandii and its role in nitrogenase activity. J Bacteriol (1993) 0.99
Transcriptional profiling of nitrogen fixation in Azotobacter vinelandii. J Bacteriol (2011) 0.99
Nucleotide sequence and mutational analysis of the vnfENX region of Azotobacter vinelandii. J Bacteriol (1991) 0.94
The genes encoding the delta subunits of dinitrogenases 2 and 3 are required for mo-independent diazotrophic growth by Azotobacter vinelandii. J Bacteriol (1995) 0.93
Iron K-edge X-ray-absorption spectroscopy of the iron-vanadium cofactor of the vanadium nitrogenase from Azotobacter chroococcum. Biochem J (1990) 0.92
Variability in molybdenum uptake activity in Bradyrhizobium japonicum strains. J Bacteriol (1987) 0.86
Vanadium K-edge X-ray-absorption spectroscopy of the functioning and thionine-oxidized forms of the VFe-protein of the vanadium nitrogenase from Azotobacter chroococcum. Biochem J (1989) 0.84
Multiple amino acid sequence alignment nitrogenase component 1: insights into phylogenetics and structure-function relationships. PLoS One (2013) 0.82
Hydrogen-mediated enhancement of hydrogenase expression in Azotobacter vinelandii. J Bacteriol (1988) 0.81
Effect of amino acid substitutions in a potential metal-binding site of AnfA on expression from the anfH promoter in Azotobacter vinelandii. J Bacteriol (1994) 0.81
Complexation of oxoanions and cationic metals by the biscatecholate siderophore azotochelin. J Biol Inorg Chem (2006) 0.80
Production and isolation of vanadium nitrogenase from Azotobacter vinelandii by molybdenum depletion. J Biol Inorg Chem (2016) 0.78
VnfY is required for full activity of the vanadium-containing dinitrogenase in Azotobacter vinelandii. J Bacteriol (2003) 0.78
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Low frequency dynamics of the nitrogenase MoFe protein via femtosecond pump probe spectroscopy - Observation of a candidate promoting vibration. J Inorg Biochem (2015) 0.75
Synthesis of the iron-molybdenum cofactor of nitrogenase is inhibited by a low-molecular-weight metabolite of Klebsiella pneumoniae. J Bacteriol (1990) 0.75
The structure of vanadium nitrogenase reveals an unusual bridging ligand. Nat Chem Biol (2017) 0.75
Long-term clinical efficacy of grass-pollen immunotherapy. N Engl J Med (1999) 5.46
Assembly of iron-sulfur clusters. Identification of an iscSUA-hscBA-fdx gene cluster from Azotobacter vinelandii. J Biol Chem (1998) 4.48
Evidence for an alternative nitrogen fixation system in Azotobacter vinelandii. Proc Natl Acad Sci U S A (1980) 3.64
Cysteine desulfurase activity indicates a role for NIFS in metallocluster biosynthesis. Proc Natl Acad Sci U S A (1993) 3.59
IscU as a scaffold for iron-sulfur cluster biosynthesis: sequential assembly of [2Fe-2S] and [4Fe-4S] clusters in IscU. Biochemistry (2000) 3.03
Complete nucleotide sequence of the Azotobacter vinelandii nitrogenase structural gene cluster. Gene (1985) 2.86
Physical and genetic map of the major nif gene cluster from Azotobacter vinelandii. J Bacteriol (1989) 2.60
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Products of the iron-molybdenum cofactor-specific biosynthetic genes, nifE and nifN, are structurally homologous to the products of the nitrogenase molybdenum-iron protein genes, nifD and nifK. J Bacteriol (1987) 2.38
Novel metal cluster in the iron-molybdenum cofactor of nitrogenase. Spectroscopic evidence. J Biol Chem (1978) 2.32
Mechanism for the desulfurization of L-cysteine catalyzed by the nifS gene product. Biochemistry (1994) 2.26
Purification of a second alternative nitrogenase from a nifHDK deletion strain of Azotobacter vinelandii. J Bacteriol (1988) 2.21
Biochemical and genetic analysis of the nifUSVWZM cluster from Azotobacter vinelandii. Mol Gen Genet (1989) 2.20
Genetic analysis of Azotobacter vinelandii mutant strains unable to fix nitrogen. J Bacteriol (1977) 2.11
Catalytic and biophysical properties of a nitrogenase Apo-MoFe protein produced by a nifB-deletion mutant of Azotobacter vinelandii. Biochemistry (1998) 2.06
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Expression of an alternative nitrogen fixation system in Azotobacter vinelandii. J Bacteriol (1982) 2.01
Nitrogen metabolite repression of nitrate reductase in Neurospora crassa. J Bacteriol (1979) 2.00
Role for the nitrogenase MoFe protein alpha-subunit in FeMo-cofactor binding and catalysis. Nature (1990) 1.94
IscA, an alternate scaffold for Fe-S cluster biosynthesis. Biochemistry (2001) 1.93
Transcriptional regulation of nitrogen fixation by molybdenum in Azotobacter vinelandii. J Bacteriol (1986) 1.85
Iron-molybdenum cofactor biosynthesis in Azotobacter vinelandii requires the iron protein of nitrogenase. J Biol Chem (1987) 1.79
Increases in IL-12 messenger RNA+ cells accompany inhibition of allergen-induced late skin responses after successful grass pollen immunotherapy. J Allergy Clin Immunol (1997) 1.73
Nucleotide sequence and genetic analysis of the nifB-nifQ region from Azotobacter vinelandii. J Bacteriol (1988) 1.69
Sulfur transfer from IscS to IscU: the first step in iron-sulfur cluster biosynthesis. J Am Chem Soc (2001) 1.68
Immunological evidence for the capability of free-living Rhizobium japonicum to synthesize a portion of a nitrogenase component. Biochim Biophys Acta (1975) 1.63
Grass pollen immunotherapy inhibits seasonal increases in basophils and eosinophils in the nasal epithelium. Clin Exp Allergy (2001) 1.61
Nucleotide sequence and mutational analysis of the structural genes (anfHDGK) for the second alternative nitrogenase from Azotobacter vinelandii. J Bacteriol (1989) 1.54
nifU gene product from Azotobacter vinelandii is a homodimer that contains two identical [2Fe-2S] clusters. Biochemistry (1994) 1.53
Grass pollen immunotherapy decreases the number of mast cells in the skin. Clin Exp Allergy (1999) 1.53
Catalytic formation of a nitrogenase iron-sulfur cluster. J Biol Chem (1994) 1.51
Activity, reconstitution, and accumulation of nitrogenase components in Azotobacter vinelandii mutant strains containing defined deletions within the nitrogenase structural gene cluster. J Bacteriol (1986) 1.47
Intergeneric transfer of genes involved in the Rhizobium-legume symbiosis. Science (1977) 1.43
Acetylene reduction by the iron-molybdenum cofactor from nitrogenase. Biochem Biophys Res Commun (1978) 1.42
Nucleotide sequence and mutagenesis of the nifA gene from Azotobacter vinelandii. Mol Microbiol (1988) 1.41
Modular organization and identification of a mononuclear iron-binding site within the NifU protein. J Biol Inorg Chem (2000) 1.40
Nucleotide sequences and mutational analysis of the structural genes for nitrogenase 2 of Azotobacter vinelandii. J Bacteriol (1990) 1.38
Tn5-induced mutants of Azotobacter vinelandii affected in nitrogen fixation under Mo-deficient and Mo-sufficient conditions. J Bacteriol (1986) 1.36
Copper-chelatin: isolation from various eucaryotic sources. Arch Biochem Biophys (1975) 1.36
Role of the MoFe protein alpha-subunit histidine-195 residue in FeMo-cofactor binding and nitrogenase catalysis. Biochemistry (1995) 1.34
Isolation, sequencing, and mutagenesis of the nifF gene encoding flavodoxin from Azotobacter vinelandii. J Biol Chem (1988) 1.30
Physiological characterization of a Neurospora crassa mutant with impaired regulation of nitrate reductase. J Bacteriol (1980) 1.30
Nitrogen fixation in molybdenum-deficient continuous culture by a strain of Azotobacter vinelandii carrying a deletion of the structural genes for nitrogenase (nifHDK). Biochem J (1986) 1.30
Biosynthesis of iron-sulphur clusters is a complex and highly conserved process. Biochem Soc Trans (2002) 1.27
The Azotobacter vinelandii NifEN complex contains two identical [4Fe-4S] clusters. Biochemistry (1998) 1.26
Two nifA-like genes required for expression of alternative nitrogenases by Azotobacter vinelandii. J Bacteriol (1989) 1.26
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Pseudouridine formation in U2 small nuclear RNA. Proc Natl Acad Sci U S A (1994) 1.24
Repression of nitrate reductase in Neurospora studied by using L-methionine-DL-sulfoximine and glutamine auxotroph gln-1b. J Bacteriol (1980) 1.19
Metabolism of glucose and reduction of retinaldehyde in retinal photoreceptors. J Neurochem (1970) 1.19
Copper-chelatin: purification and properties of a copper-binding protein from rat liver. Arch Biochem Biophys (1975) 1.18
Immunohistology of the nasal mucosa following allergen-induced rhinitis. Identification of activated T lymphocytes, eosinophils, and neutrophils. Am Rev Respir Dis (1992) 1.17
Grass pollen immunotherapy inhibits allergen-induced infiltration of CD4+ T lymphocytes and eosinophils in the nasal mucosa and increases the number of cells expressing messenger RNA for interferon-gamma. J Allergy Clin Immunol (1996) 1.16
Purification and biophysical characterization of a new [2Fe-2S] ferredoxin from Azotobacter vinelandii, a putative [Fe-S] cluster assembly/repair protein. J Biol Chem (1999) 1.16
Site-directed mutagenesis of the nitrogenase MoFe protein of Azotobacter vinelandii. Proc Natl Acad Sci U S A (1987) 1.16
Purification of the Azotobacter vinelandii nifV-encoded homocitrate synthase. J Bacteriol (1997) 1.11
Molecular cloning of nif DNA from Azotobacter vinelandii. J Bacteriol (1985) 1.09
Isolation and characterization of an acetylene-resistant nitrogenase. J Biol Chem (2000) 1.09
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Grass pollen immunotherapy: efficacy and safety during a 4-year follow-up study. Allergy (1995) 1.07
Expression of epsilon germ-line gene transcripts and mRNA for the epsilon heavy chain of IgE in nasal B cells and the effects of topical corticosteroid. Eur J Immunol (1997) 1.06
Mapping the site(s) of MgATP and MgADP interaction with the nitrogenase of Azotobacter vinelandii. Lysine 15 of the iron protein plays a major role in MgATP interaction. J Biol Chem (1992) 1.04
Evidence for multiple substrate-reduction sites and distinct inhibitor-binding sites from an altered Azotobacter vinelandii nitrogenase MoFe protein. Biochemistry (1997) 1.03
Basophil recruitment and IL-4 production during human allergen-induced late asthma. J Allergy Clin Immunol (2001) 1.03
Revised nucleotide sequence of the Azotobacter vinelandii nifE gene. Nucleic Acids Res (1988) 1.03
Demonstration in vitro of two intracellular inactivators of nitrate reductase from Neurospora. Biochim Biophys Acta (1978) 1.02
Mechanistic features and structure of the nitrogenase alpha-Gln195 MoFe protein. Biochemistry (2001) 1.02
Characteristics of NIFNE in Azotobacter vinelandii strains. Implications for the synthesis of the iron-molybdenum cofactor of dinitrogenase. J Biol Chem (1995) 1.02
Phenotypic characterization of a tungsten-tolerant mutant of Azotobacter vinelandii. J Bacteriol (1996) 1.01
Evidence for coupled electron and proton transfer in the [8Fe-7S] cluster of nitrogenase. Biochemistry (1998) 1.01
Kinetics of cell infiltration and cytokine messenger RNA expression after intradermal challenge with allergen and tuberculin in the same atopic individuals. J Allergy Clin Immunol (1994) 1.00
Characterization of the gamma protein and its involvement in the metallocluster assembly and maturation of dinitrogenase from Azotobacter vinelandii. J Biol Chem (1995) 1.00
Studies on the zinc content of Cd-induced thionein. Arch Biochem Biophys (1978) 0.99
Immunohistology of the nasal mucosa in seasonal allergic rhinitis: increases in activated eosinophils and epithelial mast cells. J Allergy Clin Immunol (1992) 0.98
Using model-system genetics for drug-based target discovery. Drug Discov Today (2001) 0.98
Sensitivity of digoxigenin and biotin labelled probes for detection of human papillomavirus by in situ hybridisation. J Clin Pathol (1990) 0.98
Construction and characterization of an Azotobacter vinelandii strain with mutations in the genes encoding flavodoxin and ferredoxin I. J Bacteriol (1989) 0.97
Gene dosage analysis in Azotobacter vinelandii. Genetics (1992) 0.96
NifU and NifS are required for the maturation of nitrogenase and cannot replace the function of isc-gene products in Azotobacter vinelandii. Biochem Soc Trans (2005) 0.96
Competitive substrate and inhibitor interactions at the physiologically relevant active site of nitrogenase. J Biol Chem (2000) 0.96
Nucleotide-iron-sulfur cluster signal transduction in the nitrogenase iron-protein: the role of Asp125. Science (1992) 0.95
Transformation of nitrogen fixation genes in Azotobacter. Basic Life Sci (1977) 0.95
Involvement of the P cluster in intramolecular electron transfer within the nitrogenase MoFe protein. J Biol Chem (1995) 0.94
Regulation of nitrogenase-2 in Azotobacter vinelandii by ammonium, molybdenum, and vanadium. J Bacteriol (1992) 0.94
Nucleotide sequence and mutational analysis of the vnfENX region of Azotobacter vinelandii. J Bacteriol (1991) 0.94