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  • Chemistry  (21)
  • Barnacle fiber  (3)
  • lipid fluidity  (2)
  • 1
    Electronic Resource
    Electronic Resource
    ATP as a positive effector of the sodium efflux in single barnacle muscle fibers
    Amsterdam : Elsevier
    Biochimica et Biophysica Acta (BBA)/Biomembranes 1070 (1991), S. 332-342 
    Details
    ISSN: 0005-2736
    Keywords: ATP ; Barnacle fiber ; Microinjection ; Sodium ion efflux
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Medicine , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0005-2736(91)90074-I
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Citrate as an aluminum chelator and positive effector of the sodium efflux in single barnacle muscle fibers
    Amsterdam : Elsevier
    Biochimica et Biophysica Acta (BBA)/Biomembranes 1108 (1992), S. 210-214 
    Details
    ISSN: 0005-2736
    Keywords: Aluminum ; Barnacle fiber ; Citrate ; Sodium ion efflux
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Medicine , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0005-2736(92)90027-J
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  • 3
    Electronic Resource
    Electronic Resource
    Concerning stimulation by injected fluoroaluminate of the sodium efflux in barnacle muscle fibers
    Amsterdam : Elsevier
    Biochimica et Biophysica Acta (BBA)/Biomembranes 1152 (1993), S. 307-313 
    Details
    ISSN: 0005-2736
    Keywords: Barnacle fiber ; Fluoride ion ; Fluoroaluminate ; Sodium ion efflux
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Medicine , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0005-2736(93)90262-X
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Transmembrane Ca2+ gradient and function of membrane proteins (1995)
    Springer
    Bioscience reports 15 (1995), S. 351-364 
    Details
    ISSN: 1573-4935
    Keywords: Ca2+-ATPase ; cAMP signal transduction ; transmembrane Ca2+ gradient ; lipid fluidity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract This review will focus on the recent advance in the study of effect of transmembrane Ca2+ gradient on the function of membrane proteins. It consits of two parts: 1. Transmembrane Ca2+ gradient and sarcoplasmic reticulum Ca2+-ATPase; 2. Effect of transmembrane Ca2+ gradient on the components and coupling of cAMP signal transduction pathway. The results obtained indicate that a proper transmembrane Ca2+ gradient may play an important role in modulating the conformation and activity of SR Ca2+-ATPase and the function of membrane proteins involved in the cAMP signal transduction by mediating the physical state change of the membrane phospholipids.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01788367
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  • 5
    Electronic Resource
    Electronic Resource
    Effect of transmembrane Ca2+ gradient on the coupling of β-adrenergic receptors and adenylyl cyclase (1996)
    Springer
    Bioscience reports 16 (1996), S. 327-341 
    Details
    ISSN: 1573-4935
    Keywords: Transmembrane Ca2+ gradient ; β-adrenergic receptors (β-AR) ; stimulatory GTP-binding protein (GS) ; adenylyl cyclase ; lipid fluidity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract In order to investigate the effect of transmembrane Ca2+ gradient on Gs mediated coupling of β-AR and adenylyl cyclase, β-AR from duck erythrocytes and Gs and adenylyl cyclase from bovine brain cortices were co-reconstituted into asolectin liposomes with different transmembrane Ca2+ gradient. These proteoliposomes were proven to be impermeable to water-soluble substances. The results obtained indicate that a physiological transmembrane Ca2− gradient (1000-fold) is essential for higher stimulation of adenylyl cyclase by hormone-activated β-AR via coupling to Gs and can be further enhanced by the decrease of such Ca2+ gradient within certain range (100 fold) following Ca2+ influx into cells during signal transduction. Fluorescence polarization of DPH revealed that transmembrane Ca2+ gradient modulates adenylyl cyclase and its stimulation by hormones through mediating a change in lipid fluidity. Correspondent conformational changes of β-AR were also detected from the fluorescence spectra and quenching of Acrylodan-labelled β-AR in those proteoliposomes. It is suggested that a proper transmembrane Ca2+ gradient is essential for the optimal fluidity of the phospholipid bilayer in the proteoliposomes, which favors the formation of a suitable conformation of the reconstituted β-AR and thus promotes the stimulation of adenylyl cyclase activities by hormone-activated β-AR via Gs.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01855016
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  • 6
    Electronic Resource
    Electronic Resource
    A free radical copolymerization model for simulating reactive processing of unsaturated polyester resins (1990)
    Stamford, Conn. [u.a.] : Wiley-Blackwell
    Polymer Engineering and Science 30 (1990), S. 684-692 
    Details
    ISSN: 0032-3888
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: A free radical copolymerization model is proposed for simulating the reaction rates and conversions of styrene monomer and unsaturated polyester resins during curing. This model is based on film theory in which the rate constants reflect both reaction and diffusion resistances. Differential scanning calorimetry in combination with Fourier transform infrared spectroscopy is used to measure the overall and individual reactivities of reacting species. Model parameters are determined from experimental data. The applicability of this model is demonstrated in a cure simulation.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pen.760301108
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    Paper (German National Licenses)
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  • 7
    Electronic Resource
    Electronic Resource
    Phosphorylation of yeast protein: Reduction of ribonucleic acid and isolation of yeast protein concentrate (1986)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 28 (1986), S. 1690-1698 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Yeast nucleoproteins were chemically phosphorylated with phosphorus oxychloride (POCL3). Studies using 31P nuclear magnetic resonance (NMR) spectroscopy, stability to pH and lysine estimation all indicated that the ∊-amino group of lysine was the principal functional group phosphorylated. Phosphorylation of ca. 30% of the lysine residues resulted in removal of more than 85% of contaminant ribonucleic acid from protein precipitated at pH 4.2. Phosphorylation did not alter the amino acid composition of yeast proteins and was reversible under acidic conditions. Based on the data, a method for the preparation of phosphorylated yeast protein with low levels of nucleic acid is proposed.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260281112
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  • 8
    Electronic Resource
    Electronic Resource
    Drop formation in air prior to jetting (1989)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 35 (1989), S. 1572-1574 
    Details
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690350922
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  • 9
    Electronic Resource
    Electronic Resource
    Dispersed phase mass transfer during drop formation under jetting conditions (1977)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 23 (1977), S. 701-714 
    Details
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: A recent design procedure for perforated plate extraction columns requires extension to include jetting conditions at each perforation. For this purpose, correlations are obtained for jet length, jet contraction, drop size, and mass transfer coefficients in disperse phase controlled liquid-liquid systems. Experimental variables include nozzle size, flow velocity, and physical properties.
    Additional Material: 21 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690230512
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  • 10
    Electronic Resource
    Electronic Resource
    Continuous phase mass transfer during formation of drops from jets (1979)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 25 (1979), S. 80-87 
    Details
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: This study enables the extension of a recent design procedure for perforated plate extraction columns to include operation under jetting conditions. Correlations of experimental data are given for jet length, jet contraction, drop size, and mass transfer rates in continuous phase controlled liquid-liquid systems. Systems exhibiting very low mass transfer rates were used, and this gave significantly different results from those obtained earlier with moderate rates of mass transfer.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690250109
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