Sterol Molecular Modifications Influencing Membrane Permeability
نویسندگان
چکیده
منابع مشابه
Molecular basis of bacterial outer membrane permeability.
INTRODUCTION Bacteria produce cell walls with the exception of mycoplasmas, and the cell wall component common to all eubacteria is the murein, or the peptidoglycan, which contributes mechanical rigidity. All gram-negative bacteria contain an additional layer in the cell wall structure, i.e., the outer membrane, which is located outside the peptidoglycan layer and shows up as a trilaminar struc...
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Gram-negative bacteria characteristically are surrounded by an additional membrane layer, the outer membrane. Although outer membrane components often play important roles in the interaction of symbiotic or pathogenic bacteria with their host organisms, the major role of this membrane must usually be to serve as a permeability barrier to prevent the entry of noxious compounds and at the same ti...
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A B S T R A C T Cetiedil has been reported to relieve painful crises in sickle cell anemia and to have antisickling properties in vitro. The drug alters neither oxygen affinity nor the solubility of deoxyhemoglobin S. Because the viscosity of the erythrocyte interior and the kinetics ofgelation are dependent on the concentration of hemoglobin, we postulated that cetiedil might inhibit sickling ...
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Many protozoans and some other organisms possess contractile vacuoles (CVs), membranous organelles which help maintain cellular water/ electrolyte balance by extracting a dilute solution from the cytoplasmic colloid and expelling it from the cell (35, 37). Although the similarity of CV function in the various organisms has long been recognized, the expected similarity of morphological elements ...
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Concepts regarding the eukaryotic plasma membrane have been evolving in light of growing evidence that it is segregated into distinct lateral domains known as lipid rafts. These steroland sphingolipid-rich raft domains are thought to play important roles in dynamic processes, including protein sorting, cell polarity, and signal transduction. Because of this, it has been very intriguing that ste...
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ژورنال
عنوان ژورنال: Plant Physiology
سال: 1974
ISSN: 0032-0889,1532-2548
DOI: 10.1104/pp.54.4.624