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991.
Requirements on bacterial polyesters as future substitute for conventional plastics for consumer goods 总被引:1,自引:0,他引:1
Urs.J. Hänggi 《FEMS microbiology reviews》1995,16(2-3):213-220
992.
993.
994.
Urs F. Greber 《Journal of virology》2016,90(8):3802-3805
Viruses are quasi-inert macromolecular assemblies. Their metastable conformation changes during entry into cells, when chemical and mechanical host cues expose viral membrane-interacting proteins. This leads to membrane rupture or fusion and genome uncoating. Importantly, virions tune their physical properties and enhance penetration and uncoating. For example, influenza virus softens at low pH to uncoat. The stiffness and pressure of adenovirus control uncoating and membrane penetration. Virus and host mechanics thus present new opportunities for antiviral therapy. 相似文献
995.
Numerous artefacts from the area of textile production as well as finished products, fabrics and netting, dating from the
period between 3900 and 800 b.c. have survived in the archaeological layers of late Neolithic and Bronze Age wetland settlements in eastern Switzerland. Archaeological
investigations, experiments in textile technology and comparisons with Egyptian wall paintings, as well as analyses under
the scanning electron microscope, allow us to almost completely reconstruct Neolithic textile production in prehistoric pile
dwellings. 相似文献
996.
Purified detergent solubilized dimeric human erythrocyte acetylcholinesterase (6.3 S form) was converted to a stable monomeric 3.9 S species when treated with 2-mercaptoethanol and iodoacetic acid. More than 60% of the enzymatic activity were recovered after this treatment. A decreased susceptibility to reduction and alkylation was observed with purified, detergent depleted acetylcholinesterase aggregates. When erythrocyte membranes (ghosts) were subjected to the same treatment, acetylcholinesterase could subsequently be solubilized as monomeric 3.9 S form and and more than 90% of the activity were recovered. Monomeric acetylcholinesterase was less reactive towards antibodies raised against (dimeric) human erythrocyte membrane acetylcholinesterase and towards antibodies against human erythrocyte membranes. The results suggest that acetylcholinesterase is present as dimeric species in human erythrocyte membranes despite the fact that fully active monomers can be obtained. 相似文献
997.
Klimentina Demirevska Diana Zasheva Rumen Dimitrov Lyudmila Simova-Stoilova Maria Stamenova Urs Feller 《Acta Physiologiae Plantarum》2009,31(6):1129-1138
The leaf protein pattern from drought-tolerant and drought-sensitive wheat varieties subjected to severe soil drought but with the possibility for recover from stress was studied by two-dimensional polyacrylamide gel electrophoresis (2D-PAGE). The spots representing Rubisco large subunit (RLS) were identified using polyclonal antibodies against Rubisco and immunoblotting. Some qualitative and quantitative differences in the 2D-PAGE protein map of wheat varieties were revealed under drought conditions. Three days recovery of wheat plants were not enough for restoring RLS quantity to the level of controls after 7 days drought, especially in the drought-sensitive variety Miziya. There are contradictory data in the literature concerning increased or diminished RLS level in drought stressed plants. A comparison of RLS after SDS-PAGE and 2D-PAGE was made. The revealed protein pattern depended on the presence or absence of protease inhibitors in the extraction buffer, on the procedure of extraction, and on the degree of stress. 相似文献
998.
Urs Schmidt-Ott Ab. Matteen Rafiqi Klaus Sander J. Spencer Johnston 《Development genes and evolution》2009,219(4):207-210
We discovered extremely small genomes (1C ~100 Mb) in the dipteran insects Coboldia fuscipes (Scatopsidae) and Psychoda cinerea (Psychodidae). The small genomes of these species cannot be explained by a fast developmental rate, which has been shown
to correlate with small genome sizes in animals and plants but might accommodate the combined effects of other developmental
traits, including small egg size, thin blastoderm layer, and long-germ development. 相似文献
999.
1000.
Matthew G. Betts Adam S. Hadley David W. Frey Sarah J. K. Frey Dusty Gannon Scott H. Harris Hankyu Kim Urs G. Kormann Kara Leimberger Katie Moriarty Joseph M. Northrup Ben Phalan Jose S. Rousseau Thomas D. Stokely Jonathon J. Valente Chris Wolf Diego ZrrateCharry 《Ecology and evolution》2021,11(11):5762