作者: AMITY 時間: 2025-3-21 20:17 作者: 闖入 時間: 2025-3-22 02:33 作者: 使虛弱 時間: 2025-3-22 05:22
A Glycoprotein Surface Layer Covers the Pseudomurein Sacculus of the Extreme Thermophile ,,s became thicker and more rigid in autotrophically than in heterotrophically grown cells. The thickness of the pseudomurein and the S-layer increased from 14 nm and 10 nm to 22 nm and 16 nm, respectively.作者: 莊嚴 時間: 2025-3-22 10:33 作者: Dissonance 時間: 2025-3-22 16:12
The S-Layer of Pathogenic Strains of ,,regate in static broth culture, are resistant to the bactericidal activity of normal serum, and form a single thermostable serogroup based on the O-polysaccharide antigens of their lipopolysaccharides (LPS) (Mittal et al. 1980, Dooley et al. 1985). Several members of the serogroup, while exhibiting 作者: Dissonance 時間: 2025-3-22 18:21
http://image.papertrans.cn/d/image/240648.jpg作者: 虛假 時間: 2025-3-22 21:28
Achim Schmid,Pascal Siemsen,Ralf G?tzeThe Thermoproteales are extremely thermophilic, anaerobic and sulphur-dependent archaebacteria living in habitats reminscent of the environmental conditions at early stages in the biotic evolution.作者: 外來 時間: 2025-3-23 02:34 作者: 吸氣 時間: 2025-3-23 08:53 作者: 拋物線 時間: 2025-3-23 11:18 作者: 用手捏 時間: 2025-3-23 15:21
= chamber). When it became evident that only the cells of plants and fungi, but not those of animals, possess a rigid wall consisting of distinct polymers, namely cellulose and chitin, respectively, this property was considered as one of the important cytological criteria separating the animal and 作者: AND 時間: 2025-3-23 18:43
terial cell walls were already found in the 1950’s (Houwink 1956). Common to all archaeobacteria is the lack of muramic acid, which proved to be true for some eubacterial genera. Unlike most eubacteria, the archaeobacteria possess no common cell wall polymer. They have developed diverse cell envelop作者: groggy 時間: 2025-3-24 01:14
surface layers (S-layers) (Sleytr and Messner, 1983, Sleytr et al. 1986a). Thus, S-layers appear to be a universal rather than a unique feature of prokaryotic cells. Quantitative calculations have revealed that S-layers can account for up to 10% of the total cell protein and therefore represent the 作者: Alopecia-Areata 時間: 2025-3-24 06:11 作者: INCH 時間: 2025-3-24 06:48
Procuring White Femininity in the Colonies, cell envelope composed of a pseudomurein sacculus and an S-layer (Fig.1a; Stetter et al. 1981). Each layer could be specifically removed: the S-layer with detergent or pronase (Stetter et al. 1981) and the pseudomurein sacculi of freshly harvested cells with a pseudomurein endopeptidase from . (Fig作者: 嫻熟 時間: 2025-3-24 13:48 作者: nerve-sparing 時間: 2025-3-24 18:25
Procuring White Femininity in the Colonies, 1980). Among Archaebacteria, the methanogens exhibit various types of cell envelopes (Kandier and K?nig 1985), some of them being protein surface-layers associated with carbohydrates. . OPF (Zehnder et al. 1980) and . GP6 (Patel 1984) present similar characteristics and have been recently proposed 作者: 火車車輪 時間: 2025-3-24 20:50 作者: onlooker 時間: 2025-3-25 01:29 作者: arousal 時間: 2025-3-25 03:42
Gendering the Egyptian Revolutionll phylogenetic divisions of the eubacteria and archaebacteria, and in a few species of eukaryotic algae as well. Sleytr and Messner (1983) list over 390 strains in which the surface arrays have been identified (see also appendix). Thus the ubiquitous occurrence of S-layers amongst diverse genera an作者: Commodious 時間: 2025-3-25 10:19 作者: peak-flow 時間: 2025-3-25 14:55
Gendering the Egyptian Revolutionintestinal pathogen, but has also been isolated from a variety of other clinical conditions (Trust and Chipman 1979). The species is especially important as a pathogen of fish, typically producing a fulminant haemorrhagic septicaemia (Trust 1986). In many instances disease most likely results from o作者: Biomarker 時間: 2025-3-25 19:13
Gendering the Egyptian Revolutionyers. While it has been argued that we must first understand the function of S-layers before there is any point in studying their structures, we believe structure determinations to be important today. A more detailed knowledge of the three-dimensional structures of S-layers may help in suggesting ex作者: DEVIL 時間: 2025-3-25 21:45 作者: Cpap155 時間: 2025-3-26 02:48 作者: 使閉塞 時間: 2025-3-26 04:19 作者: 合唱隊 時間: 2025-3-26 08:50
Achim Schmid,Pascal Siemsen,Ralf G?tzeRNA sequencing it represents the deepest known branch and the most slowly evolving line within the kingdom of eubacteria (Achenbach-Richter et al. 1987) (Fig.1). Because also most members of the second deepest branch within the eubacteria, the green non-sulphur bacteria, including . and . (Oyaizu et作者: otic-capsule 時間: 2025-3-26 15:36 作者: 許可 時間: 2025-3-26 16:58 作者: stratum-corneum 時間: 2025-3-27 00:26
Procuring White Femininity in the Colonies,ed cells which are packed into narrow filaments ca. nine cells long. A sheath is the filament’s outermost structure which encloses the entire chain of cells; its rigidity gives the cells their shape and keeps them in chains (Beveridge et al. 1987).作者: 結(jié)合 時間: 2025-3-27 04:09 作者: 吼叫 時間: 2025-3-27 06:41 作者: Temporal-Lobe 時間: 2025-3-27 13:22 作者: candle 時間: 2025-3-27 15:07
Achim Schmid,Pascal Siemsen,Ralf G?tzeoximately 15 nm. Preparations of virtually salt-free envelopes from ., isolated from the Dead Sea, can be obtained by freezing and thawing the cells, treatment with 1 μg/ml of DNAase and suspension in 10 mM CaCl. and have enabled a three-dimensional analysis of the surface layer by negative staining.作者: watertight, 時間: 2025-3-27 19:13 作者: cloture 時間: 2025-3-27 23:42
The Structure, Chemistry and Physicochemistry of the , GP1 Sheath,ed cells which are packed into narrow filaments ca. nine cells long. A sheath is the filament’s outermost structure which encloses the entire chain of cells; its rigidity gives the cells their shape and keeps them in chains (Beveridge et al. 1987).作者: Commentary 時間: 2025-3-28 03:19
Ultrastructural and Biochemical Studies of the Cell Sheath of ,, 1980). Among Archaebacteria, the methanogens exhibit various types of cell envelopes (Kandier and K?nig 1985), some of them being protein surface-layers associated with carbohydrates. . OPF (Zehnder et al. 1980) and . GP6 (Patel 1984) present similar characteristics and have been recently proposed as a synonym (Touzel et al. 1988).作者: 反感 時間: 2025-3-28 08:49 作者: EVICT 時間: 2025-3-28 11:19
Characterization of the Surface Protein of ,,ion. The p4 lattice has a centre-to-centre spacing of 11 nm (Chalcroft et al. 1986). This structural motif occurs in several species of the .-subdivision of purple bacteria (Fig.2) (Acker et al. 1975, Beveridge and Murray 1975, 1976, Lapchine 1979, Wells et al. 1983).作者: 為現(xiàn)場 時間: 2025-3-28 17:43 作者: ORBIT 時間: 2025-3-28 20:49
Achim Schmid,Pascal Siemsen,Ralf G?tzee cells of . are loosely surrounded by a sheath-like envelope which tends to balloon at the cell poles. In this communication we present some results of an as yet rather preliminary analysis of the structure of this outer sheath.作者: 殺子女者 時間: 2025-3-29 01:19 作者: LOPE 時間: 2025-3-29 03:51
The Surface Layers of ,, division alternating at right angles to the previous division to form square arrays (Murray 1963, Kuhn and Starr 1965). Cells within the sheet are held together by slender fibres, which are disposed between adjacent cells, as well as between the outer membrane and RS-lavers (Chapman et al. 1963).作者: Figate 時間: 2025-3-29 10:24
Three-Dimensional Structure of Surface Layers from Various , and , Species,c value (Baumeister et al. 1986). However, 3-D reconstructions are required (besides primary structure information) to describe and to compare the S-layers in greater detail. Here, the 3-D structures of S-layers of various . and . species are compared that are phylogenetically distant on the species, the genus, and the family level (Fig.1).作者: 復(fù)習 時間: 2025-3-29 12:27
plant kingdoms. The occurrence of cell walls in bacteria, first demonstrated by plasmolysis and dyeing techniques, was an important argument for including these organisms in the plant rather than the animal kingdom.作者: 易于交談 時間: 2025-3-29 18:58 作者: enhance 時間: 2025-3-29 21:39
Procuring White Femininity in the Colonies,s have provided useful information on the assembly of single (strain VHA) and double (strain MW5) S-layers. Some of the biochemical data referred to as “in preparation” is in a manuscript by Koval, Kist, Boivin and Murray.作者: FEAT 時間: 2025-3-30 02:16 作者: auxiliary 時間: 2025-3-30 05:30
Achim Schmid,Pascal Siemsen,Ralf G?tzefor a first survey was freezeetching, more specifically deep-etching, in conjunction with surface relief reconstruction (Prüschenk et al. 1987). This technique has the merit to provide, albeit at relatively low resolution (2.5 to 3 nm), three-dimensional information about structures in situ (Baumeister et al. 1986).作者: 卷發(fā) 時間: 2025-3-30 12:17
Conference proceedings 1988am-negative eubacterial species from nearly all phylogenetic branches. S-layers consist of a single protein- or glycoprotein species and thus can be considered as one of the most primitive membrane structures developed during evolution. Prokaryotes carrying S-layers are ubiquitously found in every p作者: 小鹿 時間: 2025-3-30 13:14
ive and gram-negative eubacterial species from nearly all phylogenetic branches. S-layers consist of a single protein- or glycoprotein species and thus can be considered as one of the most primitive membrane structures developed during evolution. Prokaryotes carrying S-layers are ubiquitously found 作者: HARP 時間: 2025-3-30 19:58
division alternating at right angles to the previous division to form square arrays (Murray 1963, Kuhn and Starr 1965). Cells within the sheet are held together by slender fibres, which are disposed between adjacent cells, as well as between the outer membrane and RS-lavers (Chapman et al. 1963).作者: GLEAN 時間: 2025-3-30 21:45
Achim Schmid,Pascal Siemsen,Ralf G?tzec value (Baumeister et al. 1986). However, 3-D reconstructions are required (besides primary structure information) to describe and to compare the S-layers in greater detail. Here, the 3-D structures of S-layers of various . and . species are compared that are phylogenetically distant on the species, the genus, and the family level (Fig.1).作者: 注視 時間: 2025-3-31 03:56 作者: 嚴厲譴責 時間: 2025-3-31 08:30
f functions which are strongly dependent on the particular environmental and ecological conditions. Their structural simplicity makes S-layers a suitable model for analyzing structure-function relationships as well as dynamic aspects of membrane morphogenesis.978-3-642-73539-4978-3-642-73537-0作者: 最有利 時間: 2025-3-31 09:49
Gendering the Egyptian Revolutionignal/noise it was difficult to assess how great this was and what the final resolution was. We have now used a more elaborate form of analysis, based on unbending the distorted lattices, to address these problems and thereby obtain a more reliable picture of the two A-layer patterns and their relationship to one another.作者: 包庇 時間: 2025-3-31 14:24 作者: 創(chuàng)新 時間: 2025-3-31 17:51
Comparative Chemistry of the Rigid Cell Wall Component and its Phylogenetic Implications,plant kingdoms. The occurrence of cell walls in bacteria, first demonstrated by plasmolysis and dyeing techniques, was an important argument for including these organisms in the plant rather than the animal kingdom.作者: concise 時間: 2025-3-31 23:45 作者: Munificent 時間: 2025-4-1 02:55 作者: dowagers-hump 時間: 2025-4-1 09:22
,Thermoresistance of A-Layer—Deficient Mutants of ,,eable outermost barrier which completely shields the cell wall outer membrane. The A-layer probably provides wild-type (A.) bacteria with a protective barrier against the defense mechanisms of the fish host.作者: Interferons 時間: 2025-4-1 14:11 作者: HILAR 時間: 2025-4-1 15:09
Comparative Chemistry of the Rigid Cell Wall Component and its Phylogenetic Implications, = chamber). When it became evident that only the cells of plants and fungi, but not those of animals, possess a rigid wall consisting of distinct polymers, namely cellulose and chitin, respectively, this property was considered as one of the important cytological criteria separating the animal and
