Repression of toxin production by tryptophan in Clostridium botulinum type E.

abstract：:Over 2,800 Tn 5 insertion mutants of Salmonella enterica sv. Typhimurium were screened for the loss of ability to suppress the multiplication of a spectinomycin-resistant (Spc(r)) but otherwise isogenic S. enterica sv. Typhimurium strain, when the Spc(r) mutant was added to 24-h LB broth cultures of the mutants. Selec...

journal_title：Archives of microbiology

authors： Rychlik I,Martin G,Methner U,Lovell M,Cardova L,Sebkova A,Sevcik M,Damborsky J,Barrow PA

更新日期：2002-12-01 00:00:00

abstract：:Methanobacterium thermoautotrophicum growing on H2 plus CO2 as sole carbon and energy source was found to contain acetate thiokinase (Acetyl CoA synthetase; EC 6.2.1.1); Acetate + ATP + CoA leads to Acetyl CoA + AMP + PPi. The apparent Km value for acetate was 40 microM. Acetate kinase (EC 2.7.2.1) and phosphotransace...

journal_title：Archives of microbiology

authors： Oberlies G,Fuchs G,Thauer RK

更新日期：1980-12-01 00:00:00

abstract：:The polymorphic GC-rich repetitive sequence (PGRS) found on the chromosome of Mycobacterium tuberculosis was characterized by means of mapping, cloning and sequencing. PGRS was present in at least 26 loci and consisted of many tandem repeats of the consensus sequence CGGCGGCAA. As the core of the consensus motif was t...

journal_title：Archives of microbiology

authors： Poulet S,Cole ST

更新日期：1995-02-01 00:00:00

abstract：:Bacillus cereus ATCC 14579 transformed naphthalene predominately to 1-naphthol. Experiments with [14C]naphthalene showed that over a 24 h period, B. cereus oxidized 5.2% of the added naphthalene. 1-Naphthol accounted for approximately 80% of the total metabolites. B. cereus incubated with naphthalene under the presenc...

journal_title：Archives of microbiology

authors： Cerniglia CE,Freeman JP,Evans FE

更新日期：1984-08-01 00:00:00

abstract：:Gene probe hybridization was used to determine distribution and expression of co-metabolic genes at a contaminated site as it underwent in situ methanotrophic bioremediation of trichloroethylene (TCE). The bioremediation strategies tested included a series of air, air:methane, and air:methane:nutrient pulses of the te...

journal_title：Archives of microbiology

authors： Hazen TC,Chakraborty R,Fleming JM,Gregory IR,Bowman JP,Jimenez L,Zhang D,Pfiffner SM,Brockman FJ,Sayler GS

更新日期：2009-03-01 00:00:00

abstract：:Purified flagellar filaments isolated from six methanogens were composed of multiple flagellins. Two flagellins were present in Methanococcus deltae (Mr = 34,000 and 32,000), Methanoculleus marisnigri (Mr = 31,000 and 25,500) and Methanococcus jannaschii (Mr = 31,000 and 27,500), three in Methanothermus fervidus (Mr =...

journal_title：Archives of microbiology

authors： Kalmokoff ML,Koval SF,Jarrell KF

更新日期：1992-01-01 00:00:00

abstract：:In view of the functional similarities between subtilisin Carlsberg and the alkaline protease from Conidiobolus coronatus, the biochemical and structural properties of the two enzymes were compared. In spite of their similar biochemical properties, e.g., pH optima, heat stability, molecular mass, pI, esterase activity...

journal_title：Archives of microbiology

authors： Phadtare S,Rao M,Deshpande V

更新日期：1996-12-01 00:00:00

abstract：:In the conversion of quinolinic acid to 6-hydroxypicolinic acid by whole cells of Alcaligenes sp. strain UK21, the enzyme reactions involved in the hydroxylation and decarboxylation of quinolinic acid were examined. Quinolinate dehydrogenase, which catalyzes the first step, the hydroxylation of quinolinic acid, was so...

journal_title：Archives of microbiology

authors： Uchida A,Ogawa M,Yoshida T,Nagasawa T

更新日期：2003-08-01 00:00:00

abstract：:Of 147 microorganisms isolated from a loamy sand, 71 showed good growth with lindane (gamma-1,2,3,4,5,6-hexachlorocyclohexane) and produced chloride in an aqueous medium. Thirteen soil microorganisms were selected to study the utilization of lindane. Lindane was metabolized by the microbes to gamma-2,3,4,5,6-pentachlo...

journal_title：Archives of microbiology

authors： Tu CM

更新日期：1976-07-01 00:00:00

abstract：:The presence of teichoic acids in a number of streptomycetes led to the conclusion that these biopolymers were widely spread in genus Streptomyces. The nature of the teichoic acid present in the mycelium was determined by extracting it with 10% trichloroacetic acid, precipitating it with ethanol and identifying the pr...

journal_title：Archives of microbiology

authors： Naumova IB,Kuznetsov VD,Kudrina KS,Bezzubenkova AP

更新日期：1980-05-01 00:00:00

abstract：:The haloalkaliphilic archaeon Natronobacterium vacuolatum forms cylinder-shaped gas vesicles throughout the growth cycle when grown in media containing 15-25% NaCl. Cells cultivated in media containing 13% NaCl are, however, gas-vesicle-free. The major gas vesicle structural protein, nv-GvpA, was detected by an antise...

journal_title：Archives of microbiology

authors： Mayr A,Pfeifer F

更新日期：1997-07-01 00:00:00

abstract：:Two different acidic polysaccharides (I and II) were detected in the external cell envelope layers (slime and capsule) of Rhodopseudomonas capsulata Sp11. Polysaccharide I contains rhamnose, fucose, glucosamine and an unknown acidic sugar, it represents the slime material of the strain. Polysaccharide II contains rham...

journal_title：Archives of microbiology

authors： Omar AS,Weckesser J,Mayer H

更新日期：1983-12-01 00:00:00

abstract：:A strictly anaerobic bacterium, strain PCE1, was isolated from a tetrachloroethene-dechlorinating enrichment culture. Cells of the bacterium were motile curved rods, with approximately four lateral flagella. They possessed a gram-positive type of cell wall and contained cytochrome c. Optimum growth occurred at pH 7.2-...

journal_title：Archives of microbiology

authors： Gerritse J,Renard V,Pedro Gomes TM,Lawson PA,Collins MD,Gottschal JC

更新日期：1996-02-01 00:00:00

abstract：:Triacylglycerol granules synthesized and accumulated by Rhodococcus opacus and Rhodococcus ruber were isolated by glycerol density gradient centrifugation. Whereas only one type of granule could be isolated from R. opacus, two types of granules with different specific densities were isolated from R. ruber. Both types ...

journal_title：Archives of microbiology

authors： Kalscheuer R,Wältermann M,Alvarez M,Steinbüchel A

更新日期：2001-12-01 00:00:00

abstract：:Geobacter species such as G. bremensis, G. pelophilus, and G. sulfurreducens are obligately anaerobic and grow in anoxic, non-reduced medium by fast reduction of soluble ferric citrate. In contrast, insoluble ferrihydrite was either only slowly or not reduced when supplied as electron acceptor in similar growth experi...

journal_title：Archives of microbiology

authors： Straub KL,Schink B

更新日期：2004-10-01 00:00:00

abstract：:Two intestinal bacterial strains MT4s-5 and MT42 involved in the degradation of (-)-epigallocatechin (EGC) were isolated from rat feces. Strain MT4s-5 was tentatively identified as Adlercreutzia equolifaciens. This strain converted EGC into not only 1-(3, 4, 5-trihydroxyphenyl)-3-(2, 4, 6-trihydroxyphenyl)propan-2-ol ...

journal_title：Archives of microbiology

authors： Takagaki A,Kato Y,Nanjo F

更新日期：2014-10-01 00:00:00

abstract：:After the addition to soil of large numbers of a cowpea Rhizobium strain, the population declined steadily until the numbers reached about 10(7)/g, and the protozoa rose to about 10(4)/g. When indigenous protozoa were suppressed by the addition of actidione to the soil, the density of the test rhizobium did not fall i...

journal_title：Archives of microbiology

authors： Habte M,Alexander M

更新日期：1977-06-20 00:00:00

abstract：:Growth kinetics of a Vero cells adapted Bangladeshi strain of peste des petits ruminants virus was studied in Vero cells to determine maximum virus yield. One-step growth curve was formulated after determining virus in both supernatant (CFV) and cell lysate (CAV) at different time categories by microtitre plate titrat...

journal_title：Archives of microbiology

authors： Siddiqui MSI,Islam MR,Chowdhury EH

更新日期：2021-01-05 00:00:00

abstract：:An unidentified filamentous purple bacterium, probably belonging to a new genus or even a new family, is found in close association with the filamentous, mat-forming cyanobacterium Microcoleus chthonoplastes in a hypersaline pond at Guerrero Negro, Baja California Sur, Mexico, and in Solar Lake, Sinai, Egypt. This or...

journal_title：Archives of microbiology

authors： D'Amelio ED,Cohen Y,Des Marais DJ

更新日期：1987-01-01 00:00:00

abstract：:Calcium is essential for the growth of rhizobia and the formation of nitrogen-fixing root-nodules on legumes, but its precise role in these processes remains unknown. We have found that Rhizobium fredii USDA208 accumulates a major 38 kDa protein when grown in media supplemented with 0.3-2 microM Cacl2. We have purifie...

journal_title：Archives of microbiology

authors： Krishman HB,Pueppke SG

更新日期：1993-01-01 00:00:00

abstract：:The sphere-rod-sphere morphology cycle of Arthrobacter crystallopoietes was accompanied by changes in the rate of growth and the rates of DNA, RNA and protein synthesis. The patterns of macromolecule synthesis resembled those found in other bacteria during a step-up followed by a step-down in growth rate. During the s...

journal_title：Archives of microbiology

authors： St John AC,Ensign JC

更新日期：1976-12-01 00:00:00

abstract：:Recently, it was proposed that some antibiotics stimulate the production of reactive oxygen species (ROS), which contribute to cell death. Later, other research groups have provided arguments against ROS-mediated killing of bacteria by antibiotics. At present, there remain a number of unanswered questions in understan...

journal_title：Archives of microbiology

authors： Smirnova G,Muzyka N,Lepekhina E,Oktyabrsky O

更新日期：2016-11-01 00:00:00

abstract：:The catabolic products of arginine metabolism were observed in Aphanocapsa 6308, a unicellular cyanobacterium, by thin layer chromatography of growth media, by limiting growth conditions, and by enzymatic analysis. Of the organic, nitrogenous compounds examined, only arginine supported growth in CO2-free media. The ex...

journal_title：Archives of microbiology

authors： Weathers PJ,Chee HL,Allen MM

更新日期：1978-07-01 00:00:00

abstract：:Cell free extracts prepared from exponentially growing Escherichia coli and Bacillus cereus as well as from Bacillus cereus at the end of exponential growth were optimized for various factors required for amino acid incorporation when programmed with Bacillus ribonucleic acid. All three preparations synthesized glutam...

journal_title：Archives of microbiology

authors： Wright W 3rd,Aronson AI

更新日期：1981-04-01 00:00:00

abstract：:The ability of Klebsiella oxytoca NRRL-B199 to use either lactose or the mixture of glucose and galactose as substrate for the production of 2,3-butanediol was studied in batch fermentations with different conditions of aeration and pH. 2,3-butanediol was undetected, or present in minute concentration in the fermentat...

journal_title：Archives of microbiology

authors： Champluvier B,Decallonne J,Rouxhet PG

更新日期：1989-01-01 00:00:00

abstract：:In Lactobacillus casei BL23, phosphofructokinase activity was higher in cells utilizing sugars transported by the phosphoenolpyruvate:sugar phosphotransferase system (PTS). The phosphofructokinase gene (pfk) was cloned from L. casei and shown to be clustered with the gene encoding pyruvate kinase (pyk). pfk and pyk ge...

journal_title：Archives of microbiology

authors： Viana R,Pérez-Martínez G,Deutscher J,Monedero V

更新日期：2005-09-01 00:00:00

abstract：:Recently, we reported the synthesis of five bacteriocin-like inhibitor substances (Bt-BLIS: morricin 269, kurstacin 287, kenyacin 404, entomocin 420, and tolworthcin 524) by Mexican strains of Bacillus thuringiensis. Here we show that, collectively, these Bt-BLIS have a moderate to broad spectrum of antibacterial acti...

journal_title：Archives of microbiology

authors： de la Fuente-Salcido N,Guadalupe Alanís-Guzmán M,Bideshi DK,Salcedo-Hernández R,Bautista-Justo M,Barboza-Corona JE

更新日期：2008-12-01 00:00:00

abstract：:Elevation gradients, often regarded as "natural experiments or laboratories", can be used to study changes in the distribution of microbial diversity related to changes in environmental conditions that typically occur over small geographical scales. We exploited this feature by characterizing fungal composition and di...

journal_title：Archives of microbiology

authors： Khan S,Chen N,Zhang C,Wang L,Han C,Lu K,Li Y,Rafiq M,Iqbal A,Zhao C

更新日期：2020-10-01 00:00:00

abstract：:The occurrence of emodin, erythroglaucin, physcion, physcion-9-anthrone, questin, catenarin, and catenarin-8-methyl ether in different species of the Aspergillus glaucus group (genus Eurotium) was investigated. So far catenarin-8-methyl ether (1, 4, 6-trihydroxy-8-methoxy-3-methylanthraquinone) has not been described ...

journal_title：Archives of microbiology

authors： Anke H,Kolthoum I,Zähner H,Laatsch H

更新日期：1980-07-01 00:00:00

abstract：:The signal orchestration between legumes and the rhizobia attribute to symbiotic nitrogen fixation through nodule formation. Root nodules serve as a nutrient-rich reservoir and harbor diverse microbial communities. However, the existence of non-rhizobial endophytes (NRE) and their role inside the root nodules are bein...

journal_title：Archives of microbiology

authors： Geetha Thanuja K,Annadurai B,Thankappan S,Uthandi S

更新日期：2020-12-01 00:00:00