منابع مشابه
Effect of Losses and Dispersion on the Focusing Properties of Left-handed Media
By means of an analysis of the field radiated by a point source placed in front of an infinite left-handed slab, the effect off losses and dispersion on the focusing properties of continuous left-handed media are analyzed. It is shown that subwavelength focusing of point-like quasi-monochromatic sources can be achieved by using physical lefthanded slabs, provided some conditions are fulfilled. ...
متن کاملComplete inhibition and partial Re-activation of single F1-ATPase molecules by tentoxin: new properties of the re-activated enzyme.
During hydrolysis of ATP, the gamma subunit of the rotary motor protein F(1)-ATPase rotates within a ring of alpha(3)beta(3) subunits. Tentoxin is a phyto-pathogenic cyclic tetrapeptide, which influences F(1)-ATPase activity of sensitive species. At low concentrations, tentoxin inhibits ATP hydrolysis of ensembles of F(1) molecules in solution. At higher concentrations, however, ATP hydrolysis ...
متن کاملComplete inhibition of the tentoxin-resistant F1-ATPase from Escherichia coli by the phytopathogenic inhibitor tentoxin after substitution of critical residues in the alpha - and beta -subunit.
Substitution of critical residues in the alpha- and beta-subunit can turn the typically resistant ATP synthase from the bacterium Escherichia coli into an enzyme showing high sensitivity to the phytopathogenic inhibitor tentoxin, which usually affects only certain sensitive plant species. In contrast to recent results obtained with the thermophilic F(1) (Groth, G., Hisabori, T., Lill, H., and B...
متن کاملSea urchin FGFR muscle-specific expression: posttranscriptional regulation in embryos and adults.
We have shown previously by in situ hybridization that a gene encoding a fibroblast growth factor receptor (SpFGFR) is transcribed in many cell types during the initial phases of sea urchin embryogenesis (Strongylocentrotus purpuratus) (McCoon et al., J. Biol. Chem. 271, 20119-20195, 1996). Here we demonstrate by immunostaining with affinity-purified antibody that SpFGFR protein is detectable o...
متن کاملIntensive care unit acquired weakness : measuring recovery from critical illness
Introduction Intensive care unit-acquired weakness (ICU-AW) is a common consequence of critical illness, affecting between 25% and 100% of critical care patients.1,2 ICU-AW is a syndrome encompassing myopathic, neuropathic and atrophic changes, which clinically presents as profound weakness. Its presence can hinder and dictate the course of recovery, leading to protracted weaning from mechanica...
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ژورنال
عنوان ژورنال: Synthesis
سال: 2011
ISSN: 0039-7881,1437-210X
DOI: 10.1055/s-0030-1261027