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  • 1
    Electronic Resource
    Electronic Resource
    Physical and genetic map of Enterococcus faecium ATCC19434 and demonstration of intra- and interspecific genomic diversity in enterococci (2002)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology letters 207 (2002), S. 0 
    Details
    ISSN: 1574-6968
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: A physical map of the Enterococcus faecium ATCC19434 chromosome was constructed by NotI, I-CeuI and Sse8387I. The chromosome was a circular DNA of 2600 kb in size, and contained six rRNA operons (rrn). The locations and orientations of the six rrn operons and 24 different determinants were mapped. Genomes of three additional E. faecium strains were also analyzed by I-CeuI digestion, and the genome sizes were found to vary from 2550 to 2995 kb. We further investigated the genome sizes and number of rrn operons in four E. faecalis, one E. avium, and one E. durans strains. The genome sizes were larger than E. faecium: 3000–3250 kb in E. faecalis, 3445 kb in E. avium, and 3070 kb in E. durans. E. avium and E. durans contained six rrn operons as in E. faecium, but all the E. faecalis strains possessed four rrn operons.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1574-6968.2002.tb11041.x
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  • 2
    Electronic Resource
    Electronic Resource
    Cloning and characterization of a new exo-cellulase gene, cel3, in Irpex lacteus (1999)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology letters 172 (1999), S. 0 
    Details
    ISSN: 1574-6968
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: A new cellulose-inducible gene (named cel3) was isolated from a strain of the white rot basidiomycete, Irpex lacteus MC-2. The cel3 open reading frame, containing two introns, encodes a polypeptide of 526 amino acids residues with a molecular mass of 55 794 Da. Expression of the cel3 gene was induced by various insoluble celluloses and CM-cellulose. Transcription of cel3 was abolished when cells were cultivated in media containing the above cellulosic substrates, but added with glucose, fructose or lactose, while addition of glycerol or mannitol did not affect the cel3 mRNA level. The amino acid sequence of the catalytic domain of the Cel3 protein was homologous to that of fungal exo-type cellulases belonging to family 7 of the glycosyl hydrolases. A phylogenetic study showed that these exo-type cellulases can be clearly separated from family 7 endo-type cellulases.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1574-6968.1999.tb13473.x
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  • 3
    Electronic Resource
    Electronic Resource
    The hupC gene product is a component of the electron transport system for hydrogen oxidation in Pseudomonas hydrogenovora (1997)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology letters 150 (1997), S. 0 
    Details
    ISSN: 1574-6968
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: The hydrogenase gene cluster containing nine genes (hupSLCDFGHIJ) was identified by sequencing of an 8.8-kb DNA region from Pseudomonas hydrogenovora. To investigate the function of the hupC gene product, we isolated a hupC-null mutant (HID3) of P. hydrogenovora by introducing an in-frame deletion into the hupC. The mutant, HID3, could not grow autotrophically but retained half the level of hydrogenase activity of the wild-type strain. Results of the oxygen consumption test and Western blot analysis revealed that the hupC gene product is a b-type cytochrome but not involved in the hydrogenase maturation process.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1574-6968.1997.tb10360.x
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  • 4
    Electronic Resource
    Electronic Resource
    Soluble fumarate reductase isoenzymes from Saccharomyces cerevisiae are required for anaerobic growth (1998)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology letters 165 (1998), S. 0 
    Details
    ISSN: 1574-6968
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: In Saccharomyces cerevisiae, the cytosolic and promitochondrial isoenzymes of fumarate reductase are encoded by the FRDS and OSM1 genes, respectively. The product of the OSM1 gene is reported to be required for growth in hypertonic medium. Simultaneous disruption of the FRDS and OSM1 genes resulted in the inability of the yeasts to grow anaerobically on glucose as a carbon source, and disruption of the OSM1 gene caused poor growth under anaerobic conditions. However, the disruption of both the FRDS and/or OSM1 genes had no effect on aerobic growth or growth under hypertonic conditions. These results suggest that the fumarate reductase isoenzymes in Saccharomyces cerevisiae are essential for anaerobic growth but not for growth under hypertonic conditions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1574-6968.1998.tb13134.x
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  • 5
    Electronic Resource
    Electronic Resource
    Axillary bud flowering after apical decapitation in Pharbitis in relation to photoinduction (1993)
    Oxford, UK : Blackwell Publishing Ltd
    Physiologia plantarum 87 (1993), S. 0 
    Details
    ISSN: 1399-3054
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: The flowering response of axillary buds of seedlings of Pharbitis nil Choisy, cv. Violet, was examined in relation to the timing of apical bud removal (plumule including the first leaf or second leaf) before or after a flower-inductive 16-h dark period. When the apical bud was removed well before the dark period, flower buds formed on the axillary shoots that subsequently developed, but when removed just before, or after, the dark period, different results were observed depending on the timing of the apical bud removal and plant age. In the case of 8-day-old seedlings, fewer flower buds formed on the axillary shoots developing from the cotyledonary node when plumules were removed 20 to 0 h before the dark period. When the apical bud was removed after the dark period, no flower buds formed. Using 14-day-old seedlings a similar reduction of flowering response was observed on the axillary shoots developing from the first leaf node when the apical bud was removed just after the dark period. To further elucidate the relationship between apical dominance and flowering, kinetin or IAA was applied to axillary buds or the cut site where the apical bud was located. Both chemicals influenced flowering, probably by modulating apical dominance which normally forces axillary buds to be dormant.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1399-3054.1993.tb08782.x
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  • 6
    Electronic Resource
    Electronic Resource
    Enhanced formation of isoamyl alcohol in Zygosaccharomyces rouxii due to elimination of feedback inhibition of α-isopropylmalate synthase (1995)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology letters 127 (1995), S. 0 
    Details
    ISSN: 1574-6968
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Abstract Mutants of the ‘miso’ yeast, Zygosaccharomyces rouxii, that produced a large amount of isoamyl alcohol, an important flavour in miso fermentation, were isolated from 5,5,5-trifluoro-dl-leucine-resistant mutants, an analogue of l-leucine. One of the mutants, M21-10, produced a three-fold higher level of isoamyl alcohol than the wild-type strain MY21 in miso fermentation. The activity of α-isopropylmalate synthase, one of the enzymes used for l-leucine synthesis, in the mutant M21-10 was not inhibited by the addition of l-leucine, a feedback inhibitor.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1574-6968.1995.tb07463.x
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  • 7
    Electronic Resource
    Electronic Resource
    Replication of double-stranded RNA in mycovirus from the plant pathogenic fungus, Fusarium solani (1996)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology letters 137 (1996), S. 0 
    Details
    ISSN: 1574-6968
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Abstract A mycovirus (named FusoV) from the plant pathogenic fungus Fusarium solani possessed two types of double-stranded (ds) RNA genome, designated Ml and M2. RNA-dependent RNA polymerase activity was detected in FusoV particle fractions. An in vitro RNA polymerase reaction using purified FusoV particles that was supplemented with NTPs revealed the synthesis of single-stranded (ss) RNA species and a subsequent formation of dsRNAs having the same size as Ml and M2. The ssRNA species synthesized in the first stage were proved to be of positive polarity (coding strand) for both M1 and M2 by dot blot hybridization analysis. These results suggest that FusoV genomic dsRNA replicates in a conservative manner.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1574-6968.1996.tb08080.x
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  • 8
    Electronic Resource
    Electronic Resource
    Growth kinetics under adenine-limiting conditions of Bacillus subtilis KYA 741, an adenine-requiring strain (1980)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 22 (1980), S. 401-410 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: The growth kinetics of Bacillus subtilis KYA 741, an adenine-requiring strain, was investigated under adenine-limiting conditions. The concentration of adenine (the limiting substrate for cell growth) in the culture filtrate remained constant during the stationary phase. In this phase, DNA turnover was active and the DNA content per cell was constant throughout the cultivation period. When cells were transferred to medium without adenine, the cell concentration began to decrease immediately and then reached a constant level due to the supply of adenine from lysing to growing cells. The rates of degradation of cells and DNA were both found to be 0.2 hr-1. An equation for cell growth in this pseudostationary phase was obtained by combining Contois' equation, in which the apparent saturation constant was a function of the cell concentration, with a term for cell degradation. This equation satisfactorily expressed the feature of cell growth and adenine consumption by B. subtilis KYA 741 under adenine-limiting conditions.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260220212
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  • 9
    Electronic Resource
    Electronic Resource
    Assimilation of liquid hydrocarbon by microorganisms. II. Growth kinetics (1977)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 19 (1977), S. 715-726 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: The growth kinetics of a microorganism with high affinity for liquid hydrocarbon which has a low solubility in water was investigated for Candida intermedia IFO 0761 in our previous work.6 The microorganism contained a hydrocarbon pool in and/or on the cell. The transfer of water-soluble substrates to the cell was not the rate-limiting step in the growth of C. intermedia accompanied by clump formation with liquid hydrocarbon. The operating conditions necessary for the oxygen supply for the growth were adequate for the growth of C. intermedia on n-tetradecane. The saturation kinetics was valid for the specific growth rate of C. intermedia and specific concentration of hydrocarbon per unit cell mass; the specific growth rate was expressed by the following equation: \documentclass{article}\pagestyle{empty}\begin{document}$$\mu = \frac{{\mu _{\max} \; {S \mathord{\left/ {\vphantom {S X}} \right. \kern-\nulldelimiterspace} X}}}{{K_S + {S \mathord{\left/ {\vphantom {S X}} \right. \kern-\nulldelimiterspace} X}}} $$\end{document}
    Additional Material: 17 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260190508
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  • 10
    Electronic Resource
    Electronic Resource
    Stability analysis of commensal and mutual relations with competitive assimilation in continuous mixed culture (1980)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 22 (1980), S. 929-946 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: The population dynamics of continuous mixed cultures with pure commensalism, commensalism plus competitive assimilation, pure mutualism, and mutualism plus competitive assimilation was disused. The population does not display oscillatory phenomena where there is a single interaction of commensalism or mutualism. Damped oscillations take place when two interactions (such commensalism and competitive assimilation or mutualism and competitive assimilation) coexist in the continuous mixed culture. The stability of these systems was discussed in detail.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260220503
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