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1983[X]
21Author    Bernd Meuel, HolgerN. OtbohmRequires cookie*
 Title    Quasielastische Lichtstreuung von isoliertem Chromatin Quasielastic Light Scattering of Isolated Chrom atin  
 Abstract    Chromatin, Q uasielastic Light Scattering Chromatin undergoes structural changes in dependence on the ionic strength o f m onovalent cations. At low ionic strength an extended chain o f nucleosomes is apparent while with increasing ionic strength more compact structures are formed. Soluble chromatin was prepared from rat liver and fractionated by gel chromatography. Q uasielastic light scattering experim ents on chromatin were done with monovalent salt concentrations ranging from 3 -1 5 0 mM. Using this method translational diffusion coefficients have been derived. These appeared to be nearly independent o f m onovalent salt concentrations, indicating that the hydrodynam ic radius o f chromatin m olecules did not change. On the other hand, sedim entation coefficients were increasing according to an exponential relation. Taken together, both findings reveal a rising o f the molar mass with increasing ionic strength. On the contrary, chrom atin prepared in physiological salt apparently disintegrates by lowering the ionic strength. Furthermore, it could be demonstrated by earlier small angle X-ray scattering studies that the diam eter o f the higher order chromatin fiber remained constant at approximately 32 nm even if these structures had been reconstituted from smaller pieces starting at low ionic strength. Thus, isolated chromatin fibers are capable o f self-assem bling to regular quaternary structures, even if the D N A does not form a continuous strand. 
  Reference    Z. Naturforsch. 38c, 126—134 (1983); received July 23/N ovem b er 22 1982 
  Published    1983 
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 TEI-XML for    default:Reihe_C/38/ZNC-1983-38c-0126.pdf 
 Identifier    ZNC-1983-38c-0126 
 Volume    38 
22Author    H. J. Tochon-Danguy, G. Boivin, M. Geoffroy, C. Walzer, C. A. BaudRequires cookie*
 Title    Physical and Chemical Analyses of the Mineral Substance during the Development o f Two Experimental Cutaneous Calcifications in Rats: Topical Calciphylaxis and Topical Calcergy  
 Abstract    In subcutaneous calcinoses induced in rats by topical calciphylaxis and topical calcergy, the ultrastructural aspects related to the evolution o f calcified deposits were previously described. In the present study by m eans o f X-ray diffraction, infrared spectrometry and electron spin resonance, different biophysical analyses are performed on the mineral substance deposited during developm ent o f calciphylaxis and calcergy. A rapid evolution o f the calcium phosphate deposits into hydroxyapatite was noticed along the first 20 days o f the calcinoses; from then, there is no important m odification even at the later stages, and the characteristics o f the mineral substance are mostly sim ilar to that o f bone tissue. The concentration o f trace elem ents such as M g2+ and F e2+, is found higher in cutaneous calcinoses than in bone tissue. 
  Reference    Z. Naturforsch. 38c, 135 (1983); received July 10 1982 
  Published    1983 
  Keywords    Calcification, Calciphylaxis, Calcergy, Apatite, ESR 
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 TEI-XML for    default:Reihe_C/38/ZNC-1983-38c-0135.pdf 
 Identifier    ZNC-1983-38c-0135 
 Volume    38 
23Author    Tetsuro Tsukam, Hanns LudwigRequires cookie*
 Title    Long Term Cultures of Neural Retina and Pigment Epithelium from Newborn Rabbits  
 Abstract    In vitro cultures o f neural retina, obtained after dispersion and trypsinization o f tissue frag­ ments, were composed o f 3 m orphologically distinct types o f neural cells, as demonstrated by sil­ ver impregnation. They resem bled ganglion or receptor cells, horizontal or amacrine cells, and b i­ polar cells o f the intact retina. Pigment epithelium was cultured without trypsinization. Both kinds o f techniques may prove helpful for long term experiments in neurobiology and neurovirology. 
  Reference    Z. Naturforsch. 38c, 141 (1983); received August 3/N ovem b er 3 1982 
  Published    1983 
  Keywords    Long Term Cultures, Neural Retina, Pigment Epithelium 
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 TEI-XML for    default:Reihe_C/38/ZNC-1983-38c-0141.pdf 
 Identifier    ZNC-1983-38c-0141 
 Volume    38 
24Author    Jean Favre-Bonvin, Claude Brassy, G.R C P C, Dom Aine Du Deffend, M. Ignaloux-BeauvoirRequires cookie*
 Title      
 Abstract    Notholaena peninsularis, N. pallens, Pteridophyta, Frond Exudate, Diterpene, (-)-K aur-16-ene-19-oic Acid. The frond exudates o f the two gymnogram moid ferns, Notholaena peninsularis and N. pallens, consist mainly o f a diterpene, accompanied by small amounts o f flavonoid aglycones. The diterpenes from both sources are shown to be identical. Their structure has been established by spec­ troscopic methods as (-)-kaur-16-ene-19-oic acid. This re­ sult is confirmed by direct comparison with an authentic sample. 
  Reference    Z. Naturforsch. 38c, 146 (1983); received N ovem ber 4 1982 
  Published    1983 
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 TEI-XML for    default:Reihe_C/38/ZNC-1983-38c-0146_n.pdf 
 Identifier    ZNC-1983-38c-0146_n 
 Volume    38 
25Author    JeffreyB. Harborne, M. Arian BoardleyRequires cookie*
 Title    Identification o f two G ossypetin M onom ethyl Ethers as Yellow Flow er P igm ents in the R utaceae  
 Abstract    Rutaceae, Haplophyllum, Rut a, G ossypetin M onomethyl Ether, Chem otaxonom y G ossypetin 7-methyl ether 3-rutinoside has been charac­ terized as a yellow flower pigm ent in Ruta graveolens and in five other Ruta species. By contrast, in four H aplophyl­ lum species, the 7-glucoside o f gossypetin 3'-methyl ether provides the yellow coloration in the flower. Although carotenoid accom panies the yellow flavonol in R. graveo­ lens, there is no evidence o f U V patterning and the petals are uniformly UV absorbing. (Polygonaceae) [7] and of several members of the Restionaceae [8 ]. Although six glycosides of gossype­ tin 7-methyl ether have variously been characterised in the above plants [9], the 3-rutinoside has not been reported before and is therefore a new plant glyco­ side. 1: R 1 = rutinose, R2 = Me, R3 = H 2: R 1 = R3 = H. R2 = Me 3: R2 = glucose, R 1 = H, R3 = Me 4: R 1 = R 2 = H, R3 = Me 
  Reference    Z. Naturforsch. 38c, 148 (1983); received N ovem ber 9 1982 
  Published    1983 
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 TEI-XML for    default:Reihe_C/38/ZNC-1983-38c-0148_n.pdf 
 Identifier    ZNC-1983-38c-0148_n 
 Volume    38 
26Author    Ferdinand Devínsky, Ivan Lacko, Ludovít KrasnecRequires cookie*
 Title    Antim icrobial A ctivity o f N,N'-bis(decylmethyl)- a,ft>-alkanediamine D io x id es (1]  
 Abstract    D ušan M lynarčik Departm ent o f Biochem istry and M icrobiology, Faculty o f Pharmacy, Com enius U niversity, A liphatic Am ine O xides, Antim icrobial Activity Antim icrobial activity o f N,N'-bis(decylmethyl)-a,ft>-alkanediam ine dioxides determ ined on Staphylococcus aureus, Escherichia coli, and Candida albicans is presented as m inim al inhibitory concentration (MIC). The effect o f the length o f linking alkylene chain on this activity has been followed. 
  Reference    Z. Naturforsch. 38c, 151—152 (1983); received July lO/October 18 1982 
  Published    1983 
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 TEI-XML for    default:Reihe_C/38/ZNC-1983-38c-0151_n.pdf 
 Identifier    ZNC-1983-38c-0151_n 
 Volume    38 
27Author    J. C. Stockert, M. L. Molero, R. H. EspelosinRequires cookie*
 Title    Fluorescence Patterns o f Chromatin and Cytoplasm by H em atoxylin S olu tion s  
 Abstract    Hematoxylin, Fluorescence, Fluorochrom es Treatments o f chicken blood and Ehrlich ascites tumor smears with hematoxylin solutions give a fluorescence reaction in chromatin, basophilic cytoplasm and leukocyte granules. In these structures the fluorescence em ission in­ creases upon dye aging and prolonged staining times. We present a preliminar spectral analysis suggesting the pos­ sibility to employ hematoxylin as a fluorochrome. 
  Reference    Z. Naturforsch. 38c, 153—155 (1983); received June 11/O ctober 18 1982 
  Published    1983 
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 TEI-XML for    default:Reihe_C/38/ZNC-1983-38c-0153_n.pdf 
 Identifier    ZNC-1983-38c-0153_n 
 Volume    38 
28Author    G. Eert, De SoeteRequires cookie*
 Title    O n the C onstruction o f "O ptim al" P hylogenetic Trees  
 Abstract    An iterative algorithm for constructing the optim al phylogenetic tree from a given set o f dissimilarity data is described. The procedure is applied for illustrative pur­ poses an a data set com piled by Fitch and Margoliash. 
  Reference    Z. Naturforsch. 38c, 156 (1983); received September 29 1982 
  Published    1983 
  Keywords    Phylogenetic Tree, Classification, M olecular Evolution 
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 TEI-XML for    default:Reihe_C/38/ZNC-1983-38c-0156_n.pdf 
 Identifier    ZNC-1983-38c-0156_n 
 Volume    38 
29Author    Jürgen Reichling, W. Alter, Bisson, Hans Becker, G.Erhard SchillingRequires cookie*
 Title    Zusammensetzung und Akkumulation des ätherischen Öls in Matricariae Radix (2. Mitteilung) Composition and Accum ulation o f Essential Oil in Matricariae Radix (2. Com m unication)  
 Abstract    The essential oil o f M atricaria cham omilla roots has been investigated. Besides the known com ­ pounds for this plant organ /ra«5-^-farnesene,/ra«5-a-famesene, cham om illaester I and II, we found the two spiroether only described for the aeriel parts. /?-caryophyllene, m -caryo hyllene and caryophyllenepoxid are found for the first tim e in M atricaria chamomilla. One o f the m ain constituents is a hitherto unknown sesquiterpene-alkohol with muurolene-structure. W ith the aid o f spectroscopical data ('H -N M R , 13C -N M R , MS) we determined its structure. We propose the name cham om illol for the new com pound. Besides the known resin ducts longitudinally orientated we found resin ducts transversally orientated and oil cells. 
  Reference    Z. Naturforsch. 38c, 159 (1983); received October 13 1982 
  Published    1983 
  Keywords    Matricaria chamomil/a, Radix, Essential Oil, Terpenes, Cham om illol 
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 TEI-XML for    default:Reihe_C/38/ZNC-1983-38c-0159.pdf 
 Identifier    ZNC-1983-38c-0159 
 Volume    38 
30Author    R. Theodor, R. Mues, H. D. Zinsmeister, K. R. MarkhamRequires cookie*
 Title    Flavon C-Glykoside aus Metzgeria furcata (Hepaticae) Flavone C-Glycosides from Metzgeria furcata (H epaticae)  
  Reference    Z. Naturforsch. 38c, 165 (1983); eingegangen am 29. Septem ber 1982 
  Published    1983 
  Keywords    Metzgeria, Metzgeriaceae, Hepaticae, Apigenin-, Luteolin-, Tricetin D i-C -G lycosid es 
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 TEI-XML for    default:Reihe_C/38/ZNC-1983-38c-0165.pdf 
 Identifier    ZNC-1983-38c-0165 
 Volume    38 
31Author    Hans-W RauwaldRequires cookie*
 Title    Neue Untersuchung über Inhaltsstoffe der Kreuzdornrinde, IV |1] Die Hauptanthraglykoside der Rinde von Rhamnus catharticus L.: Emodin-8-O-ß-gentiobiosid, -glukosid und -primverosid A New Investigation on the Com position of Rhamni cathartici Cortex, IV [1] The Main Anthraglycosides of the Stem Bark of Rhamnus catharticus L.: Emodin-8-0-/?-gentiobioside, -glucoside and -primveroside  
  Reference    Z. Naturforsch. 38c, 170—1 (1983); received October 22 1982 
  Published    1983 
  Keywords    Rhamnus catharticus L, Anthraquinone G lycosides, Em odin-8-0-/?-glycosides, , 3C-NM R Structure Determ ination, DCCC-Isolation 
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 TEI-XML for    default:Reihe_C/38/ZNC-1983-38c-0170.pdf 
 Identifier    ZNC-1983-38c-0170 
 Volume    38 
32Author    W. Krick, F.-JM. Arner, L. JaenickeRequires cookie*
 Title    Isolation and Structure Determination of the Precursors of a-and y-Irone and Homologous Compounds from Iris pallida and Iris florentina  
 Abstract    Rhizomes o f Iris pallida and Iris florentina contain — increasing on storage — violet-like smelling C)4-ketones (irones 1 a—c) which develop by oxidative degradation of C 3!-triterpenoids. The structure of these precursors is reported as well as the structure o f respective C 30-homo-logues. The unusual C3j-structures may derive biogenetically from the respective C30 com pounds by a methylation which initiates the formation of the ring-closed irone-moiety. 
  Reference    Z. Naturforsch. 38c, 179—184 (1983); received December 28 1982 
  Published    1983 
  Keywords    Iris florentina, Iris gemanica, Iris pallida, Irones, Irißorental 
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 TEI-XML for    default:Reihe_C/38/ZNC-1983-38c-0179.pdf 
 Identifier    ZNC-1983-38c-0179 
 Volume    38 
33Author    S. W. BanksRequires cookie*
 Title    "/ 4 H e q  
 Abstract    o l -H-6 I e a U " ^ O \ 0 1 v / ^O V H O f ^ t / O v II k -J 1 \ \ \ HO M e O Fig. 1. Probable mechanisms for biosynthesis o f (+)-pisatin (3) from (+)-m aackiain (1). 
  Reference    Z. Naturforsch. 38c, 185 (1983) 
  Published    1983 
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 TEI-XML for    default:Reihe_C/38/ZNC-1983-38c-0185.pdf 
 Identifier    ZNC-1983-38c-0185 
 Volume    38 
34Author    KochRequires cookie*
 Title    Chemotypen bei Molopospermum peloponnesiacum (L.)  
 Abstract    The investigation of M olopospermum peloponnesiacum (L.) Koch from different locations afforded two different types o f essential oils: the first one is characterized by a relatively high content of trim ethylbenzaldehydes, whereas the other type contains relatively high am ounts o f dillapiole and nothapiole. 
  Reference    Z. Naturforsch. 38c, 189—193 (1983); received August 4 1982 
  Published    1983 
  Keywords    Molopospermum peloponnesiacum, Apiaceae, Types of Essential Oils, Terpene-Aldehyde-Ester-Type, Apiole-Type 
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 TEI-XML for    default:Reihe_C/38/ZNC-1983-38c-0189.pdf 
 Identifier    ZNC-1983-38c-0189 
 Volume    38 
35Author    JohnL. Ingham, SatoshiT. Ah, O. RnRequires cookie*
 Title    Fungitoxic Isoflavones from Lupinus albus and other Lupinus Species  
 Abstract    The constitutive isoflavones genistein, 2'-hydroxygenistein, wighteone and luteone have been isolated in varying amounts from methanolic leaf washings of eight species belonging to the legume genus Lupinus. These four compounds likewise occur in the flower buds, stems, roots and im mature pods o f L. albus, and in stems and roots o f L. angustifolius and L. mutabilis. A m inor isoflavone present in L. albus and L. luteus leaf washings has been identified by chemical and spectroscopic procedures as 5,7,4'-trihydroxy-3-methoxy-6-(3,3-dimethylallyl)isoflavone (lupiso-flavone). Apart from genistein, 2'-hydroxygenistein, wighteone and luteone, the roots of L. albus also contain alpinumisoflavone, licoisoflavone B and 6,3'-di-(3,3-dimethylallyl)genistein (lupalbi-genin). 
  Reference    Z. Naturforsch. 38c, 194—200 (1983); received N ovem ber 3 1982 
  Published    1983 
  Keywords    Leguminosae, Papilionoideae, Lupinus, Lupins, Isoflavonoids, Isoflavones, Phenolic Compounds, Antifungal Activity 
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 TEI-XML for    default:Reihe_C/38/ZNC-1983-38c-0194.pdf 
 Identifier    ZNC-1983-38c-0194 
 Volume    38 
36Author    Gewebekulturen Von Catharanthus, G. Do, N.Requires cookie*
 Title    Ein verbessertes Verfahren zur Isolierung und quantitativen Bestimmung von Vincaleukoblastin aus intakten Pflanzen  
  Reference    Z. Naturforsch. 38c, 201 (1983) 
  Published    1983 
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 Identifier    ZNC-1983-38c-0201 
 Volume    38 
37Author    Peter Flesch, G. W. Lutz, N. In, Er, SylviaM. Üller, PeterS. ImRequires cookie*
 Title    Isolierung und Identifizierung von Sterinen im Metabolismus des Pilzes Botrytis cinerea  
 Abstract    The fungus Botrytis cinerea, which belongs to the class of ascomycetes, has been analysed for its sterol composition. It is able to produce ergosterol, cerevisterol, lanosterol/dihydrolanosterol and cholesterol besides /2-sitosterol. The identification o f the sterols is carried out with different a n a­ lytical methods including mass spectrometry. In the extracts of the mycelium also squalene has been identified. 
  Reference    Z. Naturforsch. 38c, 207—211 (1983); eingegangen am 8. Oktober 1982 
  Published    1983 
  Keywords    Mycosterols, /2-Sitosterol, Cerevisterol, Ergosterol peroxide, Botrytis cinerea 
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 TEI-XML for    default:Reihe_C/38/ZNC-1983-38c-0207.pdf 
 Identifier    ZNC-1983-38c-0207 
 Volume    38 
38Author    ThJ. Bach, H.K L IchtenthalerRequires cookie*
 Title    Mechanisms of Inhibition by Mevinolin (MK 803) of Microsome- Bound Radish and of Partially Purified Yeast HMG-CoA Reductase (E C .l.1.1.34)  
 Abstract    1) In kinetic studies, mevinolin proved to be a highly specific inhibitor of partially purified yeast HMG-CoA reductase (A^ = 3.5 nM towards HM G-CoA) and o f microsomal HM G-CoA reductase from etiolated radish seedlings (K t = 2.2 nM). At low concentrations of N AD PH, the inhibitor counteracts the sigmoidal response of plant H M G-CoA reductase activity towards the cosubstrate. At higher concentrations of NADPH, the inhibition pattern is of non-com petitive type. 2) O ur results are extensively compared with that obtained by the use o f anim al tissue and yeast as an enzyme source in order to discuss model systems probably valid to evaluate properties and regulation of plant as well as yeast HM G-CoA reductase. 
  Reference    Z. Naturforsch. 38c, 212—219 (1983); received December 6 1982 
  Published    1983 
  Keywords    HMG-CoA Reductase, Enzyme Inhibition, Mevinolin, M evalonate, Isoprenoid Biosynthesis 
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 TEI-XML for    default:Reihe_C/38/ZNC-1983-38c-0212.pdf 
 Identifier    ZNC-1983-38c-0212 
 Volume    38 
39Author    J. Beck, J. U. Von Schütz, H.C W OlfRequires cookie*
 Title    Optically Detected Magnetic Resonance of Porphyrin Complexes in the Bacterium Rhodopseudomonas sphaeroides  
 Abstract    Biosynthesis, Bacteriochlorophyll, Rhodopseudomonas sphaeroides, Fluorescence By ODM R in zero-field the porphyrins o f the BChl-biosynthesis in whole cells o f Rhodo­ pseudomonas sphaeroides R-26 are investigated. In the optical emission spectrum 11 pigments could be identified using ODM R in com bination with emission and excitation spectroscopy. The properties of these pigments were analyzed in respect to their interactions with the surrounding molecules. An energy transfer from the triplet state o f Z n-protoporphyrin to the antenna pigm ent singlet system was proved by DE-ODMR. The wavelength dependence of the zfs param eters within the individual emission band is explained by a model o f selective spin-orbit-coupling. In the case of the precursors chlorophyllide a and pheophorbide a, for example, we could show that the pigments are bound to proteins via a hydrogen bond to the ketocarbonylgroup o f ring V and that porphyrins with a central Mg-atom have an additional bond via a Fifth ligand o f the Mg. 
  Reference    Z. Naturforsch. 38c, 220—229 (1983); received January 10 1983 
  Published    1983 
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 Identifier    ZNC-1983-38c-0220 
 Volume    38 
40Author    JaquesR. Abier, M. Ookam, Besw Aran, V. Ijayalakshm, W. Olfhart, R. ÜdigerRequires cookie*
 Title    Affinity of Phycocyanin Chromopeptides to Histidyl-Sepharose Gels: A Model for Histidine-Tetrapyrrol-Interactions in Biliproteins  
 Abstract    C-Phycocyanin from the cyanobacterium Spirulina m axim a was digested with pepsin to yield chromopeptides and colorless peptides. This mixture was applied to columns o f histidyl-Sepha-roseunder a variety of conditions (pH-value, ionic strength of buffer). We found a good separa­ tion of several chrom opeptides from each other and from colorless peptides due to differential interaction of phycocyanobilin chrom ophore with the histidyl residue o f the gel. The separation is suppressed by the use of imidazole buffer. Control experiments were perform ed with purified chromopeptides and with octyl-Sepharose and DEAE-Sepharose. The nature of interaction which probably involves charge transfer interaction besides hydrophobic and ionic forces is discussed with regard to the significance for phytochrome. 
  Reference    Z. Naturforsch. 38c, 230—236 (1983); received N ovember 22 1982 
  Published    1983 
  Keywords    Phycocyanobilin-Peptides, Histidyl-Sepharose, Octyl-Sepharose, DEAE-Sepharose, Gel Filtration 
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 TEI-XML for    default:Reihe_C/38/ZNC-1983-38c-0230.pdf 
 Identifier    ZNC-1983-38c-0230 
 Volume    38 
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