Microbial Diversity: Course Report 1991, (1998)
Breznak, John A., Dworkin, Martin
Inasmuch as the course emphasizes nature as a tremendous reservoir of microbial diversity, a special effort is made to exploit the array of terrestrial, freshwater and marine habitats in the vicinity...
Myxococcus xanthus Does Not Respond Chemotactically to Moderate Concentration Gradients
Using a number of approaches we were unable to demonstrate a chemotactic response of Myxococcus xanthus to a variety of defined and complex materials. These data in addition to a number of prima...
Method for Measuring Changes in Surface Tension on Agar
Weisberg, David S., Dworkin, Martin
The surface tension of agar surfaces was determined by measuring the contact angles formed by drops of various hydrophobic liquids on the surface and then calculating the composite surface free...
Fatty Acids of Myxococcus xanthus
Ware, Judith C., Dworkin, Martin
Fatty acids were extracted from saponified vegetative cells and myxospores of Myxococcus xanthus and examined as the methyl esters by gas-liquid chromatography. The acids consisted mainly of C14 to...
Hanson, Charles W., Dworkin, Martin
Changes in nucleotide pools and extracellular nucleotides during the developmental cycle of the myxobacterium Myxococcus xanthus were determined using a high-pressure liquid chromatography nucleotide...
Bacteriolytic Enzymes Produced by Myxococcus xanthus
The bacteriolytic activities in the culture fluid of Myxococcus xanthus were purified and separated into six active fractions by the use of Bio-Gel CM-2 and Bio-Gel P-60. These fractions were...
Structural Changes in Stigmatella aurantiaca During Myxospore Induction
Reichenbach, Hans, Voelz, Herbert, Dworkin, Martin
Suspension cultures of Stigmatella aurantiaca (Chondromyces aurantiacus) were induced to form myxospores by addition of glycerol to the growing culture. The cells were fixed at various stages during...
Induction of Myxospore Formation in Stigmatella aurantiaca (Myxobacterales) by Monovalent Cations
Reichenbach, Hans, Dworkin, Martin
Suspension cultures of Stigmatella aurantiaca can be induced to form myxospores by addition of the monovalent cations Li+, Na+, NH4+, K+, or Rb+.
ELECTRON TRANSPORT SYSTEM IN VEGETATIVE CELLS AND MICROCYSTS OF MYXOCOCCUS XANTHUS
Dworkin, Martin, Niederpruem, Donald J.
Dworkin, Martin (University of Minnesota, Minneapolis), and Donald J. Niederpruem. Electron transport system in vegetative cells and microcysts of Myxococcus xanthus. J. Bacteriol. 87:316–322....
NUTRITIONAL REQUIREMENTS FOR VEGETATIVE GROWTH OF MYXOCOCCUS XANTHUS
Dworkin, Martin (Indiana University Medical Center, Indianapolis, Ind.). Nutritional requirements for vegetative growth of Myxococcus xanthus. J. Bacteriol. 84:250–257. 1962.—This investigation...
FINE STRUCTURE OF MYXOCOCCUS XANTHUS DURING MORPHOGENESIS
Voelz, Herbert, Dworkin, Martin
Voelz, Herbert (Indiana University Medical Center, Indianapolis) and Martin Dworkin. Fine structure of Myxococcus xanthus during morphogenesis. J. Bacteriol. 84:943–952. 1962.—This investigation...
NUTRITIONAL REGULATION OF MORPHOGENESIS IN MYXOCOCCUS XANTHUS
Dworkin, Martin (University of Minnesota, Minneapolis). Nutritional regulation of morphogenesis in Myxococcus xanthus. J. Bacteriol. 86:67–72. 1963.—Fruiting-body formation by Myxococcus xanthus...
Sensitivity of Gliding Bacteria to Actinomycin D
Growth of 20 of 22 strains of gliding bacteria (including fruiting myxobacteria) was inhibited by relatively low concentrations of actinomycin D.
Stable Messenger Ribonucleic Acid and Germination of Myxococcus xanthus Microcysts
Ramsey, W. Scott, Dworkin, Martin
We have examined germination, protein synthesis and ribonucleic acid (RNA) synthesis by microcysts of the fruiting myxobacterium Myxococcus xanthus. The morphological aspects of microcyst formation...
Ribonucleic Acid and Protein Synthesis During Germination of Myxococcus xanthus Myxospores
Juengst, Fredrick W., Dworkin, Martin
Ribonucleic acid (RNA) and protein synthesis during myxospore germination were examined. When RNA synthesis was inhibited more than 90% by either actinomycin D (Act D) or rifampin, germination was...
Light-Induced Lysis and Carotenogenesis in Myxococcus xanthus1
Burchard, Robert P., Dworkin, Martin
Burchard, Robert P. (University of Minnesota, Minneapolis), and Martin Dworkin. Light-induced lysis and carotenogenesis in Myxococcus xanthus. J. Bacteriol. 91:535–545. 1966.—Myxococcus xanthus,...
Peptidoglycan of Myxococcus xanthus: Structure and Relation to Morphogenesis1
White, David, Dworkin, Martin, Tipper, Donald J.
The chemical nature and distribution of the peptidoglycan in Myxococcus xanthus at various stages of the cellular life cycle were investigated. Vegetative cells and microcysts contained approximately...
Microcyst Germination in Myxococcus xanthus1
Ramsey, W. Scott, Dworkin, Martin
Germination of glycerol-prepared microcysts of Myxococcus xanthus was studied. The sequence of morphological events during germination resembled that of germinating fruiting body-microcysts. The...
Comparative Intermediary Metabolism of Vegetative Cells and Microcysts of Myxococcus xanthus1
Watson, Benjamin F., Dworkin, Martin
Crude extracts of both vegetative cells and glycerol-induced microcysts of Myxococcus xanthus contained the following enzyme activities: phosphofructokinase, phosphoglucoisomerase,...
Resistance of Vegetative Cells and Microcysts of Myxococcus xanthus
Sudo, Sara Z., Dworkin, Martin
The resistance of vegetative cells and of microcysts of Myxococcus xanthus to several destructive agents was compared. Fruiting-body microcysts were 300 times more resistant to 60 C, 5.4 times more...
Burchard, Robert P., Dworkin, Martin
Burchard, Robert P. (University of Minnesota, Minneapolis), and M. Dworkin. A bacteriophage for Myxococcus xanthus: isolation, characterization and relation of infectivity to host morphogenesis. J....
Induction of Cellular Morphogenesis in Myxococcus xanthus I. General Description
Dworkin, Martin, Sadler, William
Dworkin, Martin (University of Minnesota, Minneapolis), and William Sadler. Induction of cellular morphogenesis in Myxococcus xanthus. I. General description. J. Bacteriol. 91:1516–1519....
Sadler, William, Dworkin, Martin
Sadler, William (University of Minnesota, Minneapolis), and Martin Dworkin. Induction of cellular morphogenesis in Myxococcus xanthus. II. Macromolecular synthesis and mechanism of inducer action. J....
Magarvey, Nathan A., Keller, Jessica M., Bernan, Valerie, Dworkin, Martin, Sherman, David H.
A unique selective enrichment procedure has resulted in the isolation and identification of two new genera of marine-derived actinobacteria. Approximately 90% of the microorganisms cultured by using...
Myxococcus xanthus Does Not Respond Chemotactically to Moderate Concentration Gradients
Using a number of approaches we were unable to demonstrate a chemotactic response of Myxococcus xanthus to a variety of defined and complex materials. These data in addition to a number of prima...
Method for Measuring Changes in Surface Tension on Agar
Weisberg, David S., Dworkin, Martin
The surface tension of agar surfaces was determined by measuring the contact angles formed by drops of various hydrophobic liquids on the surface and then calculating the composite surface free...
Fatty Acids of Myxococcus xanthus
Ware, Judith C., Dworkin, Martin
Fatty acids were extracted from saponified vegetative cells and myxospores of Myxococcus xanthus and examined as the methyl esters by gas-liquid chromatography. The acids consisted mainly of C14 to...
Hanson, Charles W., Dworkin, Martin
Changes in nucleotide pools and extracellular nucleotides during the developmental cycle of the myxobacterium Myxococcus xanthus were determined using a high-pressure liquid chromatography nucleotide...
Bacteriolytic Enzymes Produced by Myxococcus xanthus
The bacteriolytic activities in the culture fluid of Myxococcus xanthus were purified and separated into six active fractions by the use of Bio-Gel CM-2 and Bio-Gel P-60. These fractions were...
Structural Changes in Stigmatella aurantiaca During Myxospore Induction
Reichenbach, Hans, Voelz, Herbert, Dworkin, Martin
Suspension cultures of Stigmatella aurantiaca (Chondromyces aurantiacus) were induced to form myxospores by addition of glycerol to the growing culture. The cells were fixed at various stages during...
Induction of Myxospore Formation in Stigmatella aurantiaca (Myxobacterales) by Monovalent Cations
Reichenbach, Hans, Dworkin, Martin
Suspension cultures of Stigmatella aurantiaca can be induced to form myxospores by addition of the monovalent cations Li+, Na+, NH4+, K+, or Rb+.
ELECTRON TRANSPORT SYSTEM IN VEGETATIVE CELLS AND MICROCYSTS OF MYXOCOCCUS XANTHUS
Dworkin, Martin, Niederpruem, Donald J.
Dworkin, Martin (University of Minnesota, Minneapolis), and Donald J. Niederpruem. Electron transport system in vegetative cells and microcysts of Myxococcus xanthus. J. Bacteriol. 87:316–322....
NUTRITIONAL REQUIREMENTS FOR VEGETATIVE GROWTH OF MYXOCOCCUS XANTHUS
Dworkin, Martin (Indiana University Medical Center, Indianapolis, Ind.). Nutritional requirements for vegetative growth of Myxococcus xanthus. J. Bacteriol. 84:250–257. 1962.—This investigation...
FINE STRUCTURE OF MYXOCOCCUS XANTHUS DURING MORPHOGENESIS
Voelz, Herbert, Dworkin, Martin
Voelz, Herbert (Indiana University Medical Center, Indianapolis) and Martin Dworkin. Fine structure of Myxococcus xanthus during morphogenesis. J. Bacteriol. 84:943–952. 1962.—This investigation...
NUTRITIONAL REGULATION OF MORPHOGENESIS IN MYXOCOCCUS XANTHUS
Dworkin, Martin (University of Minnesota, Minneapolis). Nutritional regulation of morphogenesis in Myxococcus xanthus. J. Bacteriol. 86:67–72. 1963.—Fruiting-body formation by Myxococcus xanthus...
Sensitivity of Gliding Bacteria to Actinomycin D
Growth of 20 of 22 strains of gliding bacteria (including fruiting myxobacteria) was inhibited by relatively low concentrations of actinomycin D.
Stable Messenger Ribonucleic Acid and Germination of Myxococcus xanthus Microcysts
Ramsey, W. Scott, Dworkin, Martin
We have examined germination, protein synthesis and ribonucleic acid (RNA) synthesis by microcysts of the fruiting myxobacterium Myxococcus xanthus. The morphological aspects of microcyst formation...
Ribonucleic Acid and Protein Synthesis During Germination of Myxococcus xanthus Myxospores
Juengst, Fredrick W., Dworkin, Martin
Ribonucleic acid (RNA) and protein synthesis during myxospore germination were examined. When RNA synthesis was inhibited more than 90% by either actinomycin D (Act D) or rifampin, germination was...
Light-Induced Lysis and Carotenogenesis in Myxococcus xanthus1
Burchard, Robert P., Dworkin, Martin
Burchard, Robert P. (University of Minnesota, Minneapolis), and Martin Dworkin. Light-induced lysis and carotenogenesis in Myxococcus xanthus. J. Bacteriol. 91:535–545. 1966.—Myxococcus xanthus,...
Peptidoglycan of Myxococcus xanthus: Structure and Relation to Morphogenesis1
White, David, Dworkin, Martin, Tipper, Donald J.
The chemical nature and distribution of the peptidoglycan in Myxococcus xanthus at various stages of the cellular life cycle were investigated. Vegetative cells and microcysts contained approximately...
Microcyst Germination in Myxococcus xanthus1
Ramsey, W. Scott, Dworkin, Martin
Germination of glycerol-prepared microcysts of Myxococcus xanthus was studied. The sequence of morphological events during germination resembled that of germinating fruiting body-microcysts. The...
Comparative Intermediary Metabolism of Vegetative Cells and Microcysts of Myxococcus xanthus1
Watson, Benjamin F., Dworkin, Martin
Crude extracts of both vegetative cells and glycerol-induced microcysts of Myxococcus xanthus contained the following enzyme activities: phosphofructokinase, phosphoglucoisomerase,...
Resistance of Vegetative Cells and Microcysts of Myxococcus xanthus
Sudo, Sara Z., Dworkin, Martin
The resistance of vegetative cells and of microcysts of Myxococcus xanthus to several destructive agents was compared. Fruiting-body microcysts were 300 times more resistant to 60 C, 5.4 times more...
Burchard, Robert P., Dworkin, Martin
Burchard, Robert P. (University of Minnesota, Minneapolis), and M. Dworkin. A bacteriophage for Myxococcus xanthus: isolation, characterization and relation of infectivity to host morphogenesis. J....
Induction of Cellular Morphogenesis in Myxococcus xanthus I. General Description
Dworkin, Martin, Sadler, William
Dworkin, Martin (University of Minnesota, Minneapolis), and William Sadler. Induction of cellular morphogenesis in Myxococcus xanthus. I. General description. J. Bacteriol. 91:1516–1519....
Sadler, William, Dworkin, Martin
Sadler, William (University of Minnesota, Minneapolis), and Martin Dworkin. Induction of cellular morphogenesis in Myxococcus xanthus. II. Macromolecular synthesis and mechanism of inducer action. J....
Magarvey, Nathan A., Keller, Jessica M., Bernan, Valerie, Dworkin, Martin, Sherman, David H.
A unique selective enrichment procedure has resulted in the isolation and identification of two new genera of marine-derived actinobacteria. Approximately 90% of the microorganisms cultured by using...
ENDOGENOUS PHOTOSENSITIZATION IN A CAROTENOIDLESS MUTANT OF RHODOPSEUDOMONAS SPHEROIDES
Endogenous photosensitization in a carotenoidless mutant of Rhodopseudomonas spheroides has been studied. When this mutant is exposed to visible light and oxygen there is a short lag period followed...