PubRank

G P Roberts

Author PubWeight™ 123.41‹?›

Top papers

Rank Title Journal Year PubWeight™‹?›
1 Regulation and characterization of protein products coded by the nif (nitrogen fixation) genes of Klebsiella pneumoniae. J Bacteriol 1978 5.88
2 Fine-structure mapping and complementation analysis of nif (nitrogen fixation) genes in Klebsiella pneumoniae. J Bacteriol 1978 4.80
3 Molecular phylogeny of Archaea from soil. Proc Natl Acad Sci U S A 1997 4.75
4 Genetics and regulation of nitrogen fixation. Annu Rev Microbiol 1981 3.09
5 An improved Tn7-based system for the single-copy insertion of cloned genes into chromosomes of gram-negative bacteria. Gene 1991 2.82
6 Gene-product relationships of the nif regulon of Klebsiella pneumoniae. J Bacteriol 1980 2.16
7 The products of glnL and glnG are bifunctional regulatory proteins. Mol Gen Genet 1982 2.00
8 Structure of the CO sensing transcription activator CooA. Nat Struct Biol 2000 1.96
9 Electron transport to nitrogenase in Klebsiella pneumoniae. Proc Natl Acad Sci U S A 1980 1.87
10 Regulation of nitrogenase activity by reversible ADP ribosylation. Curr Top Cell Regul 1989 1.80
11 Genes coding for the reversible ADP-ribosylation system of dinitrogenase reductase from Rhodospirillum rubrum. Mol Gen Genet 1989 1.72
12 Genetic and physiological characterization of the Rhodospirillum rubrum carbon monoxide dehydrogenase system. J Bacteriol 1992 1.71
13 Mutations in the draT and draG genes of Rhodospirillum rubrum result in loss of regulation of nitrogenase by reversible ADP-ribosylation. J Bacteriol 1991 1.71
14 Characterization of the CO-induced, CO-tolerant hydrogenase from Rhodospirillum rubrum and the gene encoding the large subunit of the enzyme. J Bacteriol 1996 1.59
15 CooA, a CO-sensing transcription factor from Rhodospirillum rubrum, is a CO-binding heme protein. Proc Natl Acad Sci U S A 1997 1.57
16 Posttranscriptional control of Klebsiella pneumoniae nif mRNA stability by the nifL product. J Bacteriol 1986 1.55
17 Characterization of the region encoding the CO-induced hydrogenase of Rhodospirillum rubrum. J Bacteriol 1996 1.54
18 Carbon monoxide-dependent growth of Rhodospirillum rubrum. J Bacteriol 1995 1.48
19 Posttranslational regulatory system for nitrogenase activity in Azospirillum spp. J Bacteriol 1989 1.47
20 The ultraviolet circular dichroism of some natural DNAs and an analysis of the spectra for sequence information. Biopolymers 1972 1.47
21 The role of disulfide bonds in maintaining the gel structure of bronchial mucus. Arch Biochem Biophys 1976 1.43
22 Posttranslational regulation of nitrogenase activity by anaerobiosis and ammonium in Azospirillum brasilense. J Bacteriol 1993 1.37
23 Regulation of carbon monoxide dehydrogenase and hydrogenase in Rhodospirillum rubrum: effects of CO and oxygen on synthesis and activity. J Bacteriol 1989 1.35
24 Functional characterization of three GlnB homologs in the photosynthetic bacterium Rhodospirillum rubrum: roles in sensing ammonium and energy status. J Bacteriol 2001 1.34
25 Identification of an alternative nitrogenase system in Rhodospirillum rubrum. J Bacteriol 1991 1.31
26 Characterization of a CO-responsive transcriptional activator from Rhodospirillum rubrum. J Biol Chem 1996 1.28
27 Posttranslational regulation of nitrogenase in Rhodobacter capsulatus: existence of two independent regulatory effects of ammonium. J Bacteriol 1993 1.27
28 The Azotobacter vinelandii NifEN complex contains two identical [4Fe-4S] clusters. Biochemistry 1998 1.26
29 Posttranslational regulation of nitrogenase in Rhodospirillum rubrum strains overexpressing the regulatory enzymes dinitrogenase reductase ADP-ribosyltransferase and dinitrogenase reductase activating glycohydrolase. J Bacteriol 1995 1.25
30 In vivo nickel insertion into the carbon monoxide dehydrogenase of Rhodospirillum rubrum: molecular and physiological characterization of cooCTJ. J Bacteriol 1997 1.25
31 Isolation and characterisation of glycoproteins from sputum. Eur J Biochem 1974 1.21
32 Electronic absorption, EPR, and resonance raman spectroscopy of CooA, a CO-sensing transcription activator from R. rubrum, reveals a five-coordinate NO-heme. Biochemistry 2000 1.20
33 The nifY product of Klebsiella pneumoniae is associated with apodinitrogenase and dissociates upon activation with the iron-molybdenum cofactor. J Bacteriol 1993 1.18
34 T and B lymphocytes in breast cancer stage relationship and abrogation of T-lymphocyte depression by enzyme treatment in vitro. Lancet 1976 1.18
35 The product of the Klebsiella pneumoniae nifX gene is a negative regulator of the nitrogen fixation (nif) regulon. J Bacteriol 1990 1.16
36 Cloning, sequencing, mutagenesis, and functional characterization of draT and draG genes from Azospirillum brasilense. J Bacteriol 1992 1.13
37 Identification of two important heme site residues (cysteine 75 and histidine 77) in CooA, the CO-sensing transcription factor of Rhodospirillum rubrum. Biochemistry 1999 1.09
38 Apodinitrogenase: purification, association with a 20-kilodalton protein, and activation by the iron-molybdenum cofactor in the absence of dinitrogenase reductase. Biochemistry 1990 1.08
39 Mutagenesis and functional characterization of the glnB, glnA, and nifA genes from the photosynthetic bacterium Rhodospirillum rubrum. J Bacteriol 2000 1.06
40 Carbon monoxide-induced activation of gene expression in Rhodospirillum rubrum requires the product of cooA, a member of the cyclic AMP receptor protein family of transcriptional regulators. J Bacteriol 1995 1.06
41 nifV-dependent, low-molecular-weight factor required for in vitro synthesis of iron-molybdenum cofactor of nitrogenase. J Bacteriol 1986 1.04
42 Comparison studies of dinitrogenase reductase ADP-ribosyl transferase/dinitrogenase reductase activating glycohydrolase regulatory systems in Rhodospirillum rubrum and Azospirillum brasilense. J Bacteriol 1995 1.04
43 Dinitrogenase reductase- and MgATP-dependent maturation of apodinitrogenase from Azotobacter vinelandii. J Biol Chem 1993 1.04
44 The cloning and functional characterization of the nifH gene of Rhodospirillum rubrum. Gene 1990 1.03
45 Characteristics of NIFNE in Azotobacter vinelandii strains. Implications for the synthesis of the iron-molybdenum cofactor of dinitrogenase. J Biol Chem 1995 1.02
46 Effect of an ntrBC mutation on the posttranslational regulation of nitrogenase activity in Rhodospirillum rubrum. J Bacteriol 1995 1.00
47 Effect of P(II) and its homolog GlnK on reversible ADP-ribosylation of dinitrogenase reductase by heterologous expression of the Rhodospirillum rubrum dinitrogenase reductase ADP-ribosyl transferase-dinitrogenase reductase-activating glycohydrolase regulatory system in Klebsiella pneumoniae. J Bacteriol 2001 1.00
48 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
49 Posttranslational regulation of nitrogenase activity in Azospirillum brasilense ntrBC mutants: ammonium and anaerobic switch-off occurs through independent signal transduction pathways. J Bacteriol 1994 0.97
50 Effect of human plasma apolipoproteins on the activity of purified lecithin: cholesterol acyltransferase. Artery 1979 0.96
51 Biological nitrogen fixation. Annu Rev Nutr 1993 0.95
52 Purification and characterization of an oxygen-stable form of dinitrogenase reductase-activating glycohydrolase from Rhodospirillum rubrum. Biochem J 1994 0.95
53 Use of Two-Dimensional Polyacrylamide Electrophoresis to Demonstrate that Putative Rhizobium Cross-Inoculation Mutants Actually Are Contaminants. Appl Environ Microbiol 1980 0.95
54 Reversible ADP-ribosylation is demonstrated to be a regulatory mechanism in prokaryotes by heterologous expression. Proc Natl Acad Sci U S A 1990 0.94
55 Transcription activation by CooA, the CO-sensing factor from Rhodospirillum rubrum. The interaction between CooA and the C-terminal domain of the alpha subunit of RNA polymerase. J Biol Chem 1999 0.94
56 Regulation of nitrogen fixation in Azospirillum brasilense. FEMS Microbiol Lett 1997 0.94
57 Glycoproteins and glycosaminoglycans synthesized by human keratinocytes in culture. Their role in cell-substratum adhesion. Biochem J 1983 0.93
58 Requirement of NifX and other nif proteins for in vitro biosynthesis of the iron-molybdenum cofactor of nitrogenase. J Bacteriol 1999 0.92
59 Resonance Raman evidence for a novel charge relay activation mechanism of the CO-dependent heme protein transcription factor CooA. Biochemistry 1999 0.92
60 Chemical aspects of respiratory mucus. Br Med Bull 1978 0.90
61 Purification and characterization of the nifN and nifE gene products from Azotobacter vinelandii mutant UW45. Proc Natl Acad Sci U S A 1989 0.89
62 Importance of methodology in demonstrating depression of T-lymphocyte levels. Br J Cancer 1978 0.89
63 Characterization of variants altered at the N-terminal proline, a novel heme-axial ligand in CooA, the CO-sensing transcriptional activator. J Biol Chem 2000 0.88
64 Perturbation of nifT expression in Klebsiella pneumoniae has limited effect on nitrogen fixation. J Bacteriol 1996 0.88
65 Presence of a second mechanism for the posttranslational regulation of nitrogenase activity in Azospirillum brasilense in response to ammonium. J Bacteriol 1996 0.87
66 Structural studies on the glycoproteins from bovine cervical mucus. Biochem J 1978 0.86
67 Functional expression of a Rhodospirillum rubrum gene encoding dinitrogenase reductase ADP-ribosyltransferase in enteric bacteria. Gene 1989 0.86
68 Masking of receptors for sheep erythrocytes on human T-lymphocytes by sera from breast cancer patients. J Natl Cancer Inst 1977 0.86
69 Altering the specificity of CooA, the carbon monoxide-sensing transcriptional activator: characterization of CooA variants that bind cyanide in the Fe(II) form with high affinity. Biochemistry 2000 0.86
70 Mapping CooA.RNA polymerase interactions. Identification of activating regions 2 and 3 in CooA, the co-sensing transcriptional activator. J Biol Chem 2001 0.85
71 Isolation and characterization of the Streptomyces cattleya temperate phage TG1. Gene 1985 0.85
72 Histochemical detection of sialic acid residues using periodate oxidation. Histochem J 1977 0.85
73 Effects of perturbations of the nitrogenase electron transfer chain on reversible ADP-ribosylation of nitrogenase Fe protein in Klebsiella pneumoniae strains bearing the Rhodospirillum rubrum dra operon. J Bacteriol 2000 0.85
74 Importance of cis determinants and nitrogenase activity in regulated stability of the Klebsiella pneumoniae nitrogenase structural gene mRNA. J Bacteriol 1999 0.84
75 Lactoperoxidase-catalysed iodination of surface proteins on human melanoma cells. Br J Cancer 1978 0.84
76 Purification and characterization of the alternative nitrogenase from the photosynthetic bacterium Rhodospirillum rubrum. J Bacteriol 1996 0.84
77 Cloning and expression of draTG genes from Azospirillum lipoferum. Gene 1990 0.84
78 Probing the heme axial ligation in the CO-sensing CooA protein with magnetic circular dichroism spectroscopy. Biochemistry 1999 0.83
79 Glycine 100 in the dinitrogenase reductase of Rhodospirillum rubrum is required for nitrogen fixation but not for ADP-ribosylation. J Bacteriol 1991 0.81
80 The heme pocket afforded by Gly117 is crucial for proper heme ligation and activity of CooA. J Biol Chem 2001 0.81
81 Macromolecular components of genital tract fluids from the sheep. J Reprod Fertil 1976 0.81
82 An investigation of enzymes and hormone-binding proteins in the luminal fluid of the bovine uterus. J Reprod Fertil 1974 0.81
83 Substitution of valine for histidine 265 in carbon monoxide dehydrogenase from Rhodospirillum rubrum affects activity and spectroscopic states. J Biol Chem 1998 0.81
84 Biochemical changes in desmosomes of bovine muzzle epidermis during differentiation. J Invest Dermatol 1987 0.80
85 Reversible ADP-ribosylation of dinitrogenase reductase in a nifD- mutant of Rhodospirillum rubrum. J Bacteriol 1989 0.80
86 Site-directed mutagenesis of the target arginine for ADP-ribosylation of nitrogenase component II in Rhodobacter capsulatus. Biochem Biophys Res Commun 1993 0.80
87 Redox-mediated transcriptional activation in a CooA variant. J Biol Chem 2001 0.79
88 Identification of an epidermal cell-adhesion glycoprotein. Biochem J 1985 0.79
89 Macromolecular components of the luminal fluid from the bovine uterus. J Reprod Fertil 1974 0.79
90 Correlation of activity regulation and substrate recognition of the ADP-ribosyltransferase that regulates nitrogenase activity in Rhodospirillum rubrum. J Bacteriol 1999 0.79
91 Effects of specific amino acid substitutions on activities of dinitrogenase reductase-activating glycohydrolase from Rhodospirillum rubrum. J Bacteriol 2001 0.79
92 Biosynthesis of a glycosylated keratin by human keratinocytes. Biochim Biophys Acta 1986 0.79
93 The distribution of precursors of glycoconjugate synthesis in human epidermis. Arch Dermatol Res 1983 0.79
94 Thin-layer gel filtration of proteins and mucopolysaccharides. J Chromatogr 1966 0.78
95 Incorporation of molybdenum into the iron-molybdenum cofactor of nitrogenase. J Biol Chem 1999 0.78
96 A study of the growth requirements of human tumour cells in tissue culture. Aust J Exp Biol Med Sci 1981 0.78
97 Differentiation-related changes in glycoprotein synthesis by human keratinocytes. Biochem J 1986 0.77
98 Proteins in the luminal fluid from the bovine oviduct. J Reprod Fertil 1975 0.77
99 Use of galactose oxidase in the histochemical examination of mucus-secreting cells. Nature 1965 0.76
100 Surface antigens on human melanoma cells studied with heterologous antisera. Br J Cancer 1980 0.75
101 The action of neutral hypochlorite on epithelial mucopolysaccharides. Biochem J 1966 0.75
102 Reactions of 5-nitrofurfuryl iodide. Chem Ind 1965 0.75
103 Proteins in human uterine fluid. J Reprod Fertil 1976 0.75
104 The presence of erythritol in the fetal fluids of fallow deer (Dama dama). Res Vet Sci 1976 0.75
105 Uterine secretions in the cow and sheep. Biochem Soc Trans 1977 0.75
106 Anthralin cytotoxicity. Br J Dermatol 1981 0.75
107 The carbohydrate moiety of sea cucumber (Thyone briareus) gelatin. Carbohydr Res 1972 0.75
108 Potential antimicrobial furans. J Med Chem 1973 0.75
109 The non-linear viscoelastic behaviour of human hair at moderate extensions. Int J Cosmet Sci 2000 0.75
110 Fractionation and comparison of proteins from bovine uterine fluid and bovine allantoic fluid. Biochim Biophys Acta 1976 0.75
111 Ferritin and depressed lymphocytes in breast cancer. N Engl J Med 1978 0.75
112 Inhibition of lymphocyte stimulation by bovine uterine proteins. J Reprod Fertil 1977 0.75
113 A proposed role for protein. Protein complexes in the regulation of the reversible ADP-ribosylation of dinitrogenase reductase. Adv Exp Med Biol 1997 0.75