Library

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
  • 11
    ISSN: 1432-2048
    Keywords: Chloroplast (electron transport) ; Heat stress ; Membrane organisation ; Pisum (electron transport and heat stress)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Exposure of isolated chloroplasts of pea (Pisum sativum L.) to temperatures above 35° C leads to a stimulation of photosystem-I-mediated electron transport from dichlorophenolindophenol to methyl viologen. The threshold temperature for this stimulation coincides closely with that for heat-induced inhibition of photosystem-II activity in such chloroplasts. This coincidence is explained in terms of a rearrangement of the thylakoid membrane resulting in the exposure of a new set of donor sites for dichlorophenolindophenol within the cytochrome f/b 6 complex of the electron-transport chain linking the two photosystems.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 12
    Electronic Resource
    Electronic Resource
    Springer
    Journal of bioenergetics and biomembranes 17 (1985), S. 217-223 
    ISSN: 1573-6881
    Keywords: Ca2+-ATPase ; sarcoplasmic reticulum ; calcium transport ; fatty acids ; membrane organization
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Physics
    Notes: Abstract The effect of palmitic and oleic acids on Ca2+-ATPase activity in coupled preparations of sarcoplasmic reticulum isolated from rabbit hind leg muscle have been compared with their effects on vesicles uncoupled with Ca2+ ionophore, A23187. Palmitate at 2 µM · mg protein−1 has no significant effect on enzyme activity and does not uncouple catalytic activity from calcium accumulation within the vesicles. Oleic acid at 1 µM · mg protein−1 uncouples the vesicles, whereas 2 µM · mg protein−1 completely inhibits Ca2+-ATPase activity. Fluorescence anisotropy of diphenylhexatriene is not significantly altered by palmitate, but a large transient increase in motion of the probe is observed with addition of oleic acid. The effects of oleic acid on enzyme activity are not mediated via an effect on the bulk properties of the hydrophobic domain of the membrane lipids.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 13
    Electronic Resource
    Electronic Resource
    Springer
    Journal of bioenergetics and biomembranes 21 (1989), S. 3-19 
    ISSN: 1573-6881
    Keywords: Membrane lipids ; phase separations ; nonbilayer lipids ; environmental stress on membranes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Physics
    Notes: Abstract Biological membranes consist of a complex assortment of lipids and proteins. The arrangement of the components, particularly in regard to their lateral disposition in the plane of the membrane under physiological conditions, is dependent on the phase behavior of the different membrane lipids and the way that this behavior is modified by interaction with other membrane components and electrolytes in the aqueous medium. Irreversible phase separation of components within the membrane may result from exposure to extreme environmental conditions including temperature, pressure, or electrolyte concentration. The principles underlying the phase-mixing behavior of model membrane systems can be used to provide useful information about the factors that determine the stability of biomembranes under physiological and non-physiological conditions. These data are reviewed and used to predict events that take place when membranes are exposed to environmental stress.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 14
    Electronic Resource
    Electronic Resource
    Springer
    Journal of bioenergetics and biomembranes 19 (1987), S. 605-624 
    ISSN: 1573-6881
    Keywords: Membrane lipids ; phase behavior ; photosynthesis ; chloroplast ; thylakoid membrane
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Physics
    Notes: Abstract The phase behavior of the main classes of polar lipids found in the photosynthetic membranes of higher plants and algae is reviewed and compared to that of binary lipid mixtures and total lipid extracts of such membranes. Particular interest is paid to the way in which factors such as temperature and acyl chain saturation influence the phase behavior of these lipids and the implications this has in terms of the ability of photosynthetic membranes to resist environmental stress.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 15
    ISSN: 1573-8221
    Keywords: ubiquinols ; synaptosomal membranes ; mitochondrial membranes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...