Characterization of genes for an alternative nitrogenase in the cyanobacterium Anabaena variabilis

A technique for radiolabeling DNA restriction endonuclease fragments to high specific activity

1983 • 26,063 citations

SIMPLE CONDITIONS FOR GROWTH OF UNICELLULAR BLUE‐GREEN ALGAE ON PLATES^{1, 2}

1968 • 1,238 citations

Studies on Nitrogen-Fixing Blue-Green Algae. I. Growth and Nitrogen Fixation by Anabaena Cylindrica Lemm

1955 • 1,129 citations

[83] Conjugal transfer of DNA to cyanobacteria

1988 • 552 citations

A versatile class of positive-selection vectors based on the nonviability of palindrome-containing plasmids that allows cloning into long polylinkers

1988 • 461 citations

[12] Genetic engineering of the cyanobacterial chromosome

1987 • 400 citations

Photochemical activity and components of membrane preparations from blue-green algae. I. Coexistence of two photosystems in relation to chlorophyll a and removal of phycocyanin

1974 • 397 citations

Spatial expression and autoregulation of hetR, a gene involved in the control of heterocyst development in Anabaena

1993 • 370 citations

Rearrangement of nitrogen fixation genes during heterocyst differentiation in the cyanobacterium Anabaena

1985 • 298 citations

Purification of a second alternative nitrogenase from a nifHDK deletion strain of Azotobacter vinelandii

1988 • 271 citations

Developmental regulation and spatial pattern of expression of the structural genes for nitrogenase in the cyanobacterium Anabaena.

1990 • 224 citations

The vanadium nitrogenase of Azotobacter chroococcum. Purification and properties of the VFe protein

1987 • 189 citations

Isolation and physical mapping of nitrogen fixation genes from the cyanobacterium Anabaena 7120.

1982 • 181 citations

Nitrogen fixation (nif) genes of the cyanobacterium Anabaena species strain PCC 7120

1989 • 151 citations

Nucleotide sequence and mutational analysis of the structural genes (anfHDGK) for the second alternative nitrogenase from Azotobacter vinelandii

1989 • 147 citations

Ethane formation from acetylene as a potential test for vanadium nitrogenase in vivo

1987 • 137 citations

Different recombination site specificity of two developmentally regulated genome rearrangements

1987 • 136 citations

Nucleotide sequences and mutational analysis of the structural genes for nitrogenase 2 of Azotobacter vinelandii

1990 • 129 citations

Evidence that the barrier to the penetration of oxygen into heterocysts depends upon two layers of the cell envelope

1989 • 127 citations

Genome Rearrangement and Nitrogen Fixation in Anabaena Blocked by Inactivation of xisA Gene

1988 • 123 citations

Regulation of nitrogen metabolism in Azotobacter vinelandii: isolation of ntr and glnA genes and construction of ntr mutants.

1986 • 119 citations

Bacterial Alternative Nitrogen Fixation Systems

1988 • 117 citations

Molecular cloning and nucleotide sequence analysis of the gene coding for heterocyst ferredoxin from the cyanobacterium Anabaena sp. strain PCC 7120

1988 • 105 citations

Identification and cloning of a regulatory gene for nitrogen assimilation in the cyanobacterium Synechococcus sp. strain PCC 7942

1990 • 103 citations

Evidence for the occurrence of the alternative, vanadium-containing nitrogenase in the cyanobacteriumAnabaena variabilis

1988 • 103 citations

Differentiation in Nostoc muscorum: Nitrogenase Is Synthesized in Heterocysts

1973 • 101 citations

High recovery of nitrogenase activity and of ⁵⁵ Fe-labeled nitrogenase in heterocysts isolated from Anabaena variabilis

1978 • 101 citations

Two nifA-like genes required for expression of alternative nitrogenases by Azotobacter vinelandii

1989 • 100 citations

The vanadium nitrogenase of Azotobacter chroococcum. Reduction of acetylene and ethylene to ethane

1988 • 100 citations

Structural genes for the vanadium nitrogenase from Azotobacter chroococcum.

1989 • 91 citations

Sequence of the nifD gene coding for the α subunit of dinitrogenase from the cyanobacterium Anabaena

1983 • 89 citations

Genetic evidence for an Azotobacter vinelandii nitrogenase lacking molybdenum and vanadium

1989 • 88 citations

Organization of the nif genes in cyanobacteria in symbiotic association with Azolla and Anthoceros

1988 • 88 citations

Anabaena sp. strain PCC 7120 bifA gene encoding a sequence-specific DNA-binding protein cloned by in vivo transcriptional interference selection

1993 • 84 citations

Bacterial-type ferredoxin genes in the nitrogen fixation regions of the cyanobacterium Anabaena sp. strain PCC 7120 and Rhizobium meliloti

1988 • 84 citations

Sequence of the gene coding for the β-subunit of dinitrogenase from the blue-green alga Anabaena

1982 • 80 citations

Nitrogen fixation in molybdenum-deficient continuous culture by a strain of Azotobacter vinelandii carrying a deletion of the structural genes for nitrogenase (nifHDK)

1986 • 77 citations

The Transcription Apparatus and the Regulation of Transcription Initiation

1994 • 73 citations

Energy transfer from phycobiliproteins to Photosystem I in vegetative cells and heterocysts of Anabaena Variabilis

1981 • 72 citations

Expression, nucleotide sequence and mutational analysis of two open reading frames in the nif gene region of Anabaena sp. strain PCC 7120

1990 • 71 citations

Transcriptional regulation by metals of structural genes for Azotobacter vinelandii nitrogenases

1991 • 59 citations

Excision of an 11-kilobase-pair DNA element from within the nifD gene in anabaena variabilis heterocysts

1989 • 57 citations

Physiological Studies of Oxygen Protection Mechanisms in the Heterocysts of Anabaena cylindrica

1984 • 56 citations

Identification of a common cyanobacterial symbiont associated with Azolla spp. through molecular and morphological characterization of free-living and symbiotic cyanobacteria

1991 • 54 citations

Selective removal of molybdenum traces from growth media of N2-fixing bacteria

1991 • 54 citations

Characteristics of Anabaena variabilis influencing plaque formation by cyanophage N-1

1979 • 53 citations

Genetic mapping of the chromosome of the cyanobacterium, Anabaena variabilis. Proximity of the structural genes for nitrogenase and ribulose-bisphosphate carboxylase.

1986 • 47 citations

Regulation of nitrogenase-2 in Azotobacter vinelandii by ammonium, molybdenum, and vanadium

1992 • 46 citations

Simple methods for plating single vegetative cells of, and for replica-plating, filamentous blue-green algae

1973 • 39 citations

Enzymatic, lectin, and morphological characterization and classification of presumptive cyanobionts from Azolla Lam

1989 • 34 citations

Optimum conditions for growth of cyanobacteria on solid media

1989 • 31 citations

The vanadium nitrogenase of Azotobacter

1989 • 26 citations

Cloning and characterization of nitrogenase genes from Anabaena variabilis

1985 • 23 citations

Optimum conditions for growth of cyanobacteria on solid media

1989 • 20 citations