| | 1 | Author
| Monier Habib, Tadros, Gerhart Drews, Dierk Evers | Requires cookie* | | | Title
| Peptidoglycan and Protein, the Major Cell Wall Constituents of the Obligate Halophilic Bacterium Rhodospirillum salexigens  | | | | Abstract
| The obligate halophilic member o f Rhodospirillaceae, Rhodospirillum salexigens, does not con tain lipopolysaccharide in its thin and delicate gram-negative type cell wall. Major constituents are protein (approximately 70% of dry weight) and peptidoglycan (murein). | | | |
Reference
| Z. Naturforsch. 37c, 210 (1982); received November 20 1981 | | | |
Published
| 1982 | | | |
Keywords
| Murein, Peptidoglycan, Cell Wall, Halophilic, Phototrophic Bacterium, Protein | | | |
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| default:Reihe_C/37/ZNC-1982-37c-0210.pdf | | | | Identifier
| ZNC-1982-37c-0210 | | | | Volume
| 37 | |
| 3 | Author
| Stefan Stevanovic, Günther Jung, JürgP. Rosenbusch | Requires cookie* | | | Title
| | | | | Abstract
| The major outer membrane protein of Rhodobacter capsulatus 37b4 (capsule-free) was iso lated. Strong porin-activity was observed after reconstitution into artificial lipid bilayer mem branes with a single channel conductance of 3.15 nS in Im KC1. The porin migrated as a broad, single band (M T above 90,000) on sodium dodecyl sulfate polyacrylamide gel electro phoresis and dissociated into a single species of polypeptides (M r 36,000) on treatment with EDTA (10 m M at 30 °C, 20 min) or by heating (100 °C, 5 min). Analytical ultracentrifugation studies demonstrated the native porin to be a trimer. The monomers chromatofocused as a single, sharp peak on fast performance liquid chromatography and only one band, corre sponding to an isoelectric point of about 4.0, was obtained on isoelectric focusing. Gas-phase sequencing of the 23 N-terminal residues revealed G lu-V al-Lys-Leu-Ser-G ly-A sp-Ala-Arg-M et-G ly-V al-M et-T yr-A sn-Gly-A sp-Asp-X-A sn-Phe-Ser-Ser. | | | |
Reference
| Z. Naturforsch. 45c, 576—582 (1990); received February 19 1990 | | | |
Published
| 1990 | | | |
Keywords
| Rhodobacter capsulatus, Cell Wall, Outer Membrane, Porin, Oligomeric Structure | | | |
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| default:Reihe_C/45/ZNC-1990-45c-0576.pdf | | | | Identifier
| ZNC-1990-45c-0576 | | | | Volume
| 45 | |
| 4 | Author
| Andrea Beimen, Andreas Bermpohl, Dietmar Meletzus, Rudolf Eichenlaub, Wolfgang Barz | Requires cookie* | | | Title
| Accumulation of Phenolic Compounds in Leaves of Tomato Plants after Infection with Clavibacter michiganense subsp. michiganense Strains Differing in Virulence | | | | Abstract
| Infection experiments using tom ato (Lycopersicon esculentum cv. M oneymaker) plants and three strains o f Clavibacter michiganense subsp. michiganense were conducted. The bacterial isolates differed in plasmid status, virulence (measured as wilting index and as reduction o f plant biomass) and the ability to colonize the plants. Differences in the expression o f exopoly saccharides and the exoenzymes endocellulase, polygalacturonase, and xylanase, respectively, were not found with the bacterial isolates. As infection-induced responses o f the plants time-depending increases in soluble phenolic material, including chlorogenic acid and rutin, in the steroid alkaloid tom atine and in cell wall-bound cinnamic acids were found. In the latter frac tion / 7-coum aric, ferulic and especially caffeic acid were the main constituents. All plant responses were preferentially expressed in the compatible interaction. Sesquiterpenoid phyto alexins were not found in the infected plant tissues. The relation between bacterial pathogen icity and plant responses is discussed. | | | |
Reference
| Z. Naturforsch. 47c, 898—9 (1992); received July 13 1992 | | | |
Published
| 1992 | | | |
Keywords
| T om ato, Clavibacter michiganense, Phenolic Compounds, Cell Wall, Plasmid | | | |
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| default:Reihe_C/47/ZNC-1992-47c-0898.pdf | | | | Identifier
| ZNC-1992-47c-0898 | | | | Volume
| 47 | |
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