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1983[X]
101Author    J. M. Steyns, G. Van, N. Igtevecht, G.J N Iem Ann, J. V. BrederodeRequires cookie*
 Title    Differential Regulation of Flavone Glycosylation during Ontogeny of Silene pratensis  
  Reference    Z. Naturforsch. 38c, 544 (1983) 
  Published    1983 
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 TEI-XML for    default:Reihe_C/38/ZNC-1983-38c-0544.pdf 
 Identifier    ZNC-1983-38c-0544 
 Volume    38 
102Author    J. Van, B. Rederode, J. M. SteynsRequires cookie*
 Title    Ontogeny and Biosynthesis of Isovitexin 7-O-Galactoside in a Mutant of Silene pratensis Unable to Glycosylate this Compound in the Petals  
 Abstract    Enzyme activity responsible for the biosynthesis of isovitexin-7-O-galactoside from isovitexin and UDP-galactose can be dem onstrated in protein extracts of cotyledons and rosette leaves from Silene pratensis plants. This galactosyltransferase activity is absent in stem leaves and petals. "True Km" values o f 0.0025 mM for isovitexin and of 8.2 mM for UDP-galactose were found. At infinite concentration of both substrates the "true Vmax" value was 0.11 mM /m in/mg protein. The galactosyltransferase activity was optim al at pH 7.0; the divalent ions Zn and Hg were inhibitory, whereas Ca, Co, Mg, Mn and EDTA were not inhibitory. 
  Reference    Z. Naturforsch. 38c, 549 (1983); received March 21 1983 
  Published    1983 
  Keywords    Silene pratensis, Flavone Glycosylation, G enetic Control, Ontogenesis, U D P -galactose: Iso-vitexin-7-O-galactosyltransferase 
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 TEI-XML for    default:Reihe_C/38/ZNC-1983-38c-0549.pdf 
 Identifier    ZNC-1983-38c-0549 
 Volume    38 
103Author    B. D. Angelm Ayr, G. Stotz, R. Spribille, O. RkRequires cookie*
 Title    Relationship between Flower Development, Anthocyanin Accumulation and Activity o f Enzymes Involved in Flavonoid Biosynthesis in Matthiola incana R. Br  
 Abstract    The activity of five enzymes concerning anthocyanin biosynthesis as well as the anthocyanin accumulation were studied during the developm ent o f buds and flowers o f Matthiola incana. The investigations included the first three enzymes in the anthocyanin pathw ay, chalcone synthase, chalcone isomerase and flavanone 3-hydroxylase, and the flavonoid-m odifying enzymes, flavo-noid 3'-hydroxylase and flavonoid 3-O-glucosyltransferase. The bud and flower development was subdivided into eight stages with respect to m orphological criteria. On a fresh weight basis, a substantial correlation between anthocyanin content and the activities o f all o f the five enzymes were found in the various developmental stages. Furtherm ore, the anthocyanins formed are obviously not or only less subject to degradation. Although all m axim a of activity proved to be in buds, clear differences were observed between the five enzymes with regard to increase and stage of maximum activity. The isolation of other enzymes involved in flavonoid biosynthesis is likely to be most successful in the bud stages. 
  Reference    Z. Naturforsch. 38c, 551—555 (1983); received April 111983 
  Published    1983 
  Keywords    Matthiola incana, Anthocyanin Biosynthesis, Anthocyanin Content, Enzyme Activities, Flower Development 
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 TEI-XML for    default:Reihe_C/38/ZNC-1983-38c-0551.pdf 
 Identifier    ZNC-1983-38c-0551 
 Volume    38 
104Author    N.Requires cookie*
 Title    Variable Fluorescence and Fluorescence Spectra of Algae after Herbicide-Induced Pigment Bleaching  
 Abstract    avassard V. K a ra p e ty a n 3. R eto S tra sse rb, and Peter B ö g erc a A. N. Bakh Institute o f Biochemistry, Academy of Sciences o f the USSR, Moscow; Herbicides like norflurazon, oxadiazon, or oxyfluorfen affect the pigment apparatus o f green algae. Their influence on variable (Fmax _ ^o) and initial fluorescence (F0) as well as on the state 
  Reference    Z. Naturforsch. 38c, 556 (1983); received March 23 1983 
  Published    1983 
  Keywords    Norflurazon, Oxadiazon, Oxyfluorfen, Bleaching by Herbicides, Fluorescence Induction, Spectra 
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 TEI-XML for    default:Reihe_C/38/ZNC-1983-38c-0556.pdf 
 Identifier    ZNC-1983-38c-0556 
 Volume    38 
105Author    Z. NaturforschRequires cookie*
 Title    Untersuchungen zur Synthese und biologischen Bedeutung von Glutaminsäure-l-semialdehyd als Vorstufe der Chlorophylle  
 Abstract    I n v e stig a tio n s o n th e S y n th e s is a n d B io lo g ic a l S ig n if ic a n c e o f G lu ta m ic -1-s e m ia ld e h y d e as a P r e c u r s o r o f t h e C h lo r o p h y lls H ans-U lrich Meisch und R aim und M aus Glutam ic-1-semialdehyde which is discussed to be involved in the early steps of chlorophyll biosynthesis, has been synthesized from glutam ic acid by reduction of several N-protected carboxylic acid derivatives like the N-CBO-glutamic acid -1-dim ethyl am ide or m ethylanilide, the pyroglutamic acid im idazolide and the acid chlorides of N -phthaloyl-glutam ic acid-5-methyl ester or 5-benzylester. The a-am inoaldehyde could only be generated in solution, where it is polymerized rapidly. Due to its instability, it is suggested th at glutam ic sem ialdehyde plays no role as a free metabolite in green plants. 
  Reference    Z. Naturforsch. 38c, 563—570 (1983); received M arch 4 1983 
  Published    1983 
  Keywords    Glutamic Semialdehyde, Synthesis, Reactivity, G lutam ic Acid, D erivatives 
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 TEI-XML for    default:Reihe_C/38/ZNC-1983-38c-0563.pdf 
 Identifier    ZNC-1983-38c-0563 
 Volume    38 
106Author    H. Erm, Ann Bothe, Gislene Barbosa, JohannaD.Requires cookie*
 Title    Nitrogen Fixation and Nitrate Respiration by A zospirillum brasilense  
 Abstract    Azospirillum The 0 2-sensitivitiy of N 2-fixation by the carotenoid forming strain Azospirillum brasilense Cd and the colourless strain Sp 7 is com pared in the present communication. As no difference in the reaction is observed with both strains, it is concluded that carotenoids do not protect nitrogenase from damage by 0 2. Azospirillum spp. have also been shown to perform N O '-dependent ^ -f i x ­ ation. The physiological properties of this reaction are described in more detail in the present communication. Evidence is presented that NO^-dependent N 2-fixation is a transitory reaction, proceeding only as long as the enzymes o f assimilatory nitrate reduction are synthesized by the cells. 
  Reference    Z. Naturforsch. 38c, 571—577 (1983); received March 31 1983 
  Published    1983 
  Keywords    Nitrogen Fixation, N itrate Respiration, Denitrification, Nitrogenase Protection, Carotenoids 
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 TEI-XML for    default:Reihe_C/38/ZNC-1983-38c-0571.pdf 
 Identifier    ZNC-1983-38c-0571 
 Volume    38 
107Author    M. Ichael, G. H. Ahn, H. Ans, G. RisebachRequires cookie*
 Title    Cyclic AMP Is Not Involved as a Second Messenger in the Response of Soybean to Infection by Phytophthora megasperma f. sp. glycinea  
 Abstract    cAMP levels were monitored in soybean (Glycine max) infected with race 1 o f Phytophthora megasperma f. sp. glycinea and in soybean cell suspension cultures treated with a glucan elicitor from P. megasperma. While cAMP could be readily detected in soybean hypocotyls using a rad io ­ immunoassay, no correlation was observed between infection and cAMP levels. N o cAMP was detected in suspension cultured soybean cells. These results suggest that cAMP does not play a significant role in the plant's response to fungal attack, or the response o f suspension cultured cells to elicitor. 
  Reference    Z. Naturforsch. 38c, 578 (1983); received April 12 1983 
  Published    1983 
  Keywords    Cyclic AMP, Radioimmunoassay, Phytoalexins, Glycine max, Phytophthora megasperma 
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 TEI-XML for    default:Reihe_C/38/ZNC-1983-38c-0578.pdf 
 Identifier    ZNC-1983-38c-0578 
 Volume    38 
108Author    V. W. Ray, R. H. DavisRequires cookie*
 Title    Biosynthesis of Cyanogenic Glycosides in Butterflies and Moths: Incorporation of Valine and Isoleucine into Linamarin and Lotaustralin by Zygaena and Heliconius Species (Lepidoptera)  
 Abstract    C -13 NMR data for linamarin and lotaustralin, obtained after feeding of either Zygaena Jilipendulae or Heliconius melpomone (Lepidoptera) with C-13 enriched valine and isoleucine respectively, indicate that intact units of amino acid with loss of the carboxyl group are incorporated during the biosynthesis o f these cyanogenic glycosides. 
  Reference    Z. Naturforsch. 38c, 583 (1983); received December 15 1982/M arch 16 1983 
  Published    1983 
  Keywords    Cyanogenic Glycosides, Linamarin, Lotaustralin, Biosynthesis, Lepidoptera 
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 TEI-XML for    default:Reihe_C/38/ZNC-1983-38c-0583.pdf 
 Identifier    ZNC-1983-38c-0583 
 Volume    38 
109Author    J. Kukulies, W. Stockem, K.E W Oh Lfarth-B, Tterm AnRequires cookie*
 Title    Caffeine-Induced Surface Blebbing and Budding in the Acellular Slime Mold Physarum polycephalum  
 Abstract    The mechanism of plasma m em brane proliferation was studied in the acellular slime mold Physarum polycephalum with the aid o f light and electron microscopical techniques. Treatm ent of protoplasmic drops with a Tris-buffered 15 m M caffeine solution causes surface blebbing and budding over periods of 5 -9 0 min. The process o f surface blebbing is coupled to a 5 -10-fold increase of the surface area in conjunction with characteristic changes in cytoplasmic m orphol­ ogy. Successive constriction of blebs exhibiting different sizes and degree o f hyalo-granulo-plasmic separation leads to the form ation of num erous spherical caffeine droplets. D uring the process of surface budding and droplet formation the total surface area o f the original (genuine) protoplasmic drop is not reduced, but continues to grow. Freeze-etch studies show that caffeine concomitantly causes characteristic changes in the fine structure of the plasma membrane. D uring the initial phase of surface blebbing the original density of intram embranous particles (IMP) is reduced from 3676/|am2 to 1669/um2 and the PF; EF ratio (IM P/|im 2 protoplasmic face: exoplasmic face) shifts from 2.4:1 to 2.8:1. W hen surface budding is completed the IMP-density in the plasm a m em brane of single caffeine droplets increases again to 2289/nm 2 and the P F :E F ratio changes to 1.5:1. Simultaneously, the isolated caffeine droplets produce numerous small hyaline m em brane protrusions, which are pinched off and contain no IMP. Control experiments dem onstrate that T ris-buffer w ithout caffeine also shows a weak capacity to induce surface blebbing, to change the IM P-density and the P F : EF ratio (2443/nm2; 1.5:1); but Tris-buffer fails to cause surface budding. On the other hand, different concentrations of sucrose (2 5 -2 0 0 m M) can supress to a certain degree both caffeine-and Tris-buffer-induced surface blebbing, but not caffeine-dependent surface budding. The caffeine-effect is reversible insofar as protoplasm ic drops with blebbing and budding activity recover to normal morphology, fine structure and locom otion when transferred to physiological conditions. The mechanisms of successive changes in plasm a m em brane morphology as well as the mode of a participation of the actomyosin system in cell surface dynamics are discussed. 
  Reference    Z. Naturforsch. 38c, 589—5 (1983); received F ebruary 7 1983 
  Published    1983 
  Keywords    Physarum polycephalum, Surface Blebbing and Budding, Caffeine, Plasmalemm a, Cytoplasmic Äctomyosin 
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 TEI-XML for    default:Reihe_C/38/ZNC-1983-38c-0589.pdf 
 Identifier    ZNC-1983-38c-0589 
 Volume    38 
110Author    G. H. Arnischfeger, G. ZenkRequires cookie*
 Title    Regulation of Light Energy Distribution between Photosynthetic Pigment Systems; a Possible Role of Leaf Anatomy  
 Abstract    The complex anatomical structure of an intact leaf results in a distribution o f photosyn-thetically active energy between photosynthetic pigm ents which is different from that observed in isolated chloroplasts. The variance is due mainly to scattering at the gas-liquid interface between cells and intercellular space which tends to increase light absorption by the long wavelength absorbing pigments through secondary fluorescence. Evidence is given in support of an active use of this feature by the higher plant to regulate energy flow at the photophysical level of light absorption. 
  Reference    Z. Naturforsch. 38c, 600 (1983); received April 27 1983 
  Published    1983 
  Keywords    Photosynthetic Pigments, Energy D istribution, Leaf Anatomy 
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 TEI-XML for    default:Reihe_C/38/ZNC-1983-38c-0600.pdf 
 Identifier    ZNC-1983-38c-0600 
 Volume    38 
111Author    W. Erner Kroll, M. Onika Löffler, F. Rie, H. Elm, S. ChneiderRequires cookie*
 Title    Energy Parameters, Macromolecular Synthesis and Cell Cycle Progression of in vitro Grown Ehrlich Ascites Tumor Cells after Inhibition of Oxydative ATP Synthesis by Oligomycin  
 Abstract    1. In order to elucidate the significance of oxidative ATP production for the proliferation of Ehrlich ascites tum or cells, cell cycle progression, energy m etabolism and m acromolecular synthesis in the presence of oligomycin were studied. 2. In the presence of the inhibitor (20 ng/m l), lactate production and glucose uptake of the cells increased by about 30 — 35% as com pared to controls; oxygen consum ption was maximally inhibited by 30-45% and could not further be reduced by higher concentrations o f the inhibitor. ATP/ADP ratios of the oligomycin treated cells and control cells were not significantly different. 3. In the first passage in the presence o f oligomycin proliferation o f the cells is reduced to about 50% that of controls; without severely affecting viability (dye exclusion test). In the second passage with oligomycin cell proliferation completely arrests. As was shown by flow cytometric analysis and BrdU-H33258 technique of flow cytometry, cells accum ulate in the early S phase; division of cells which are in the S-and G 2 M com partm ent at the beginning o f oligomycin treatment accounts for the increase of cell num ber in the first passage in the presence of oligomycin. On recultivation in the third passage in the absence of the inhibitor cells take up proliferation again; an increase of cell num ber o f about 60% o f controls was observed within 24 h. 4. In the presence o f oligomycin incorporation of [2-14C ]thym idine is reduced to about 20% of the controls within 8 h, incorporation of [U -l4C]lysine begins to slow down im m ediately after treatment with the inhibitor, the same is true for the incorporation o f [2-14C]uridine. Transport of a-aminoisobutyric acid into the cells is not severely affected. 5. It is suggested, that not lack of energy by inhibition o f oxidative phosphorylation accounts for the arrest of cell cycle progression in the presence o f oligomycin but rather the blockade of transport of cytoplasmatic (glycolytic) ATP into m itochondria, which is caused by the high potential built up across the m itochondrial m em brane in the presence o f this inhibitor. 
  Reference    Z. Naturforsch. 38c, 604 (1983); received March 17 1983 
  Published    1983 
  Keywords    Ehrlich Ascites Tumor Cells, Oligomycin, Energy M etabolism, Cell Cycle Progression 
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 Identifier    ZNC-1983-38c-0604 
 Volume    38 
112Author    F. A. Bieber, H. Aschauer, S. M. Bektas, G. BraunitzerRequires cookie*
 Title    Embryonale Hämoglobine der Säuger: Die Sequenzen der s-und ^-Ketten vom Hausschwein {Sus scrofa domestica) Embryonic Hemoglobins in Mammals: The Primary Structures o f e-and 5-Chains of the Pig (Sus scrofa dom estica)  
 Abstract    The amino-acid sequences of all expressed hemoglobins of the pig embryo are given: Hemo­ globin Gower I (C2/e 2), Hemoblobin Gower II (oc2/ e 2), Hemoglobin Heide I (C2/>92) and Hemo­ globin Heide II (a2/<92). The e-and 5-chains were obtained with chromatography on CM-cellu-lose from isolated hemoglobin components. The primary structure was established by sequencing the tryptic peptides in the sequenator: they were isolated using HPLC. The C-chains from pig and human differ in 23, the e-chains in 20 positions. The embryonic globin-gene which express the 5-chains, is a new one in mammals, of e-type and up to now it could only be found in pigs: the amino-acid sequence differ in only 4 positions from the e-chains. Because no y-chains (fetal Hb) are expressed the sequences of all hemoglobins (5 hemoglobin chains forming 5 different hemo­ globins) of ontogeny in pig are now described. 
  Reference    Z. Naturforsch. 38c, 613—616 (1983); eingegangen am 24. Februar 1983 
  Published    1983 
  Keywords    Hemoglobin, Pig Embryo, Sequences of (-, e-and9-Chains 
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 TEI-XML for    default:Reihe_C/38/ZNC-1983-38c-0613.pdf 
 Identifier    ZNC-1983-38c-0613 
 Volume    38 
113Author    Jürgen Fritsch, Werner GrossRequires cookie*
 Title    Studies on the Transport of Anions and Zwitterions of Acidic Amino Acids in Streptomyces hydrogenans  
 Abstract    In Streptomyces hydrogenans, acidic amino acids are taken up either as anions by a specific transport system or as zwitterions via a nonspecific one. Variations in the zwitterion concentration caused by changes in pH influence the uptake and exchange diffusion by the nonspecific system. Differences in pH-optima for L-glutamate and L-aspartate transport are due to the different p K 2-values of these amino acids. The anion transport by the specific system is accompanied by a short hyperpolarization of the membrane potential followed by a secondary influx of potassium ions into the cells. 
  Reference    Z. Naturforsch. 38c, 617—620 (1983); received March 4 1983 
  Published    1983 
  Keywords    Acidic Amino Acids, Multiple Transport Systems, Anion and Zwitterion Transport, Streptomyces hydrogenans 
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 TEI-XML for    default:Reihe_C/38/ZNC-1983-38c-0617.pdf 
 Identifier    ZNC-1983-38c-0617 
 Volume    38 
114Author    M. S. De Giam, M. G. Iam Biagi, D.M S EsquivelRequires cookie*
 Title    Hydrogen Bond Indices and Tertiary Structure of Yeast tRNAPhe  
 Abstract    The rigidity and stability of the tertiary structure of yeast tR N A Phe is related to a bond index obtained in an IEHT (iterative extended Hückel theory) calculation. The index permits a quantitative estimate of the electron density along the hydrogen bond, having thus an appealing physical meaning. The results indicate that Hoogsteen-type bonds have, as expected, greater electronic population than Watson-Crick type ones. Other non-Watson-Crick pairs, the wobble pair and G|5—C48, exhibit high values of the index for the N H ... O bond. In the triples, the electron density of the hydrogen bridges does not weaken (compared with the one of the pairs involved). Contour density maps are shown and dipolar moments of pairs and triples are qualitatively discussed. 
  Reference    Z. Naturforsch. 38c, 621 (1983); received March 29 1983 
  Published    1983 
  Keywords    tRNAPhe, Tertiary Structure, Hydrogen Bond, Bond Index, Non-Watson-Crick Pairs 
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 TEI-XML for    default:Reihe_C/38/ZNC-1983-38c-0621.pdf 
 Identifier    ZNC-1983-38c-0621 
 Volume    38 
115Author    Winfried Michels, Eckhard SchlimmeRequires cookie*
 Title    Effect of 5'-Terminated (2'— 5')-01igoadenylates on Cap Degrading Activities in Rat Liver Nuclei  
 Abstract    (2'-5')-oligoadenylates, 5'Capped-(2'-5')-adenylates, Decapping Activities, Cap-Type Dinucleoside Triphosphatase, Rat Liver Nuclei (2'-5')-oligoadenylates bearing a 5'-terminal triphosphate or a 5'GTP-group inhibit the activity of a dinucleoside triphosphatase in rat liver nuclei thereby protecting m R N A against 5'-exo-nucleolytic degradation. (2'-5')-oligoadenylates, on the other hand, were known to enhance the activity of an endoribonuclease, RNaseF. Thus a synergistic effect may be assumed in vivo, i.e. cellular metabolism seems to be protected twice in virus-infected cells. 
  Reference    Z. Naturforsch. 38c, 631—634 (1983); received March 9 1983 
  Published    1983 
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 TEI-XML for    default:Reihe_C/38/ZNC-1983-38c-0631.pdf 
 Identifier    ZNC-1983-38c-0631 
 Volume    38 
116Author    Akira Taketo, Yoriko TaketoRequires cookie*
 Title    Decreased Production of RNA-Streptolysin S in Streptococci Devoid of Extracellular RNase Activity  
 Abstract    In cultures of certain streptococcal strains, R N A added as a carrier for streptolysin S (SLS) was hardly degraded, owing to deficiency of extracellular RNase activity. Production of RNA-SLS into culture supernatant was markedly reduced in the RNase-deficient streptococci. Even in these RNase-less strains, guanylic-acid rich oligonucleotides, polyG or trypan blue effectively induced SLS production, as in RNase-positive cells. These results demonstrate involvement of the streptococcal nuclease in manifestation of SLS-inducing effect of exogenous RNA. Additional data indicated that cellular growth was promoted by supplementation of RNA, in the nuclease-producing streptococci. 
  Reference    Z. Naturforsch. 38c, 635—639 (1983); received December 6 1982/March 1 1983 
  Published    1983 
  Keywords    Streptolysin S, Extracellular Nuclease, RN A Effect, Streptococcus hem olyticus 
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 TEI-XML for    default:Reihe_C/38/ZNC-1983-38c-0635.pdf 
 Identifier    ZNC-1983-38c-0635 
 Volume    38 
117Author    Dieter Gassner, Hans KomnickRequires cookie*
 Title    Activation and Inhibition of Na/K-ATPase by Filipin-Cholesterol Complexation. A Correlative Biochemical and Ultrastructural Study on the Microsomal and Purified Enzyme of the Avian Salt Gland  
 Abstract    The Na/K-ATPase-rich microsomal fraction and purified Na/K-ATPase membranes of the salt-stressed avian salt gland were studied at defined filipin/cholesterol molar ratios (F/C) using enzyme assay and electron microscopy including negative staining, thin sectioning and freeze frac­ turing. Comparative examinations of detergent-treated microsomal fractions and the use of elec­ tron microscopic tracers revealed that F/C up to 2 activated latent Na/K-ATPase in sealed right-side-out vesicles by increasing membrane permeability without disrupting the vesicular mem­ brane. Therefore, filipin offers an alternative to the detergents for the activation of latent vectorial membrane enzymes and a possible tool to examine their subcellular localization and sidedness in the membrane. The same F/C had no stimulatory effect on the microsomal anion-ATPase sug­ gesting that the 2 ATPases are not located in the same membrane. Increasing F/C applied to the unfixed Na/K-ATPase membranes caused an increase in the number of structural F —C-complexes and a progressive lateral displacement of the enzyme par­ ticles which finally led to a separation of the areal distribution of these structures at F /C = 10. Such displacements did not occur in unfixed microsomes and were prevented by glutaraldehyde fixation of the purified membranes. F/C exceeding 2 progessively and temperature-dependently inhibited the Na/K-ATPase in its membrane-bound states, whereas the solubilized enzyme was rather insensitive. The structural and biochemical data suggest that inhibition results from the perturbation of the lipidic microen­ vironment of the enzyme caused by filipin-cholesterol complexation. 
  Reference    Z. Naturforsch. 38c, 640—663 (1983); received March 22 1983 
  Published    1983 
  Keywords    Avian Salt Gland, Filipin, Na/K-ATPase, Enzyme Latency, Lipid Perturbation 
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 TEI-XML for    default:Reihe_C/38/ZNC-1983-38c-0640.pdf 
 Identifier    ZNC-1983-38c-0640 
 Volume    38 
118Author    W. Schreibmayer, H. Hagauer, H. A. TritthartRequires cookie*
 Title    Incorporation of a Voltage Sensitive Pore from Guinea Pig Heart Mitochondria into Black Lipid Membranes and Characterization of Electrical Properties  
 Abstract    A pore from guinea pig heart mitochondria has been incorporated into BLM 's (Black lipid membranes) in a highly oriented manner and its electrical properties studied. The pore shows multistate behaviour, the distribution of the pore between different conducting states being very sensitive to voltage. This has been proven by computation of single-pore experiments. Highest single pore conductance was 4.5 nSi in 1 M KC1, independent of voltage and with no detectable preference for cations or anions. The pore from guinea pig heart mitochondria reacts more sensitivly to voltage than pores of mitochondria from other tissues so far incorporated into BLM's. 
  Reference    Z. Naturforsch. 38c, 664—667 (1983); received February 23 1983 
  Published    1983 
  Keywords    Pore, Mitochondria, Reconstitution Black Lipid Membranes 
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 TEI-XML for    default:Reihe_C/38/ZNC-1983-38c-0664.pdf 
 Identifier    ZNC-1983-38c-0664 
 Volume    38 
119Author    Eckhard Wollenweber, Eloy RodriguezRequires cookie*
 Title      
 Abstract    Hymenoclea salsola, Asteraceae, Resin Flavonoids, 2',4',6'-OH Chalcone Hymenoclea salsola (Asteraceae), a dominant shrub of the desert areas of California and Baja California, Mexico, secretes high amounts of resin on the leaf surface. Chemi­ cal analysis of the resin revealed the presence of a complex mixture of flavonoid aglycones. Among the compounds identified is the rare 2',4',6'-OH chalcone, previously not known to occur in the Asteraceae. 
  Reference    Z. Naturforsch. 38c, 668—669 (1983); received April 8 1983 
  Published    1983 
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 TEI-XML for    default:Reihe_C/38/ZNC-1983-38c-0668_n.pdf 
 Identifier    ZNC-1983-38c-0668_n 
 Volume    38 
120Author    G. Blaschke, G. ScribaRequires cookie*
 Title    New Papaveraceae Alkaloids Including an 7,8-Oxygenated Isoquinoline, the Postulated Precursor of the Cularine Alkaloids  
 Abstract    Papaveraceae. Cularines, Benzylisoquinolines The first 7,8,3',4'-oxygenated benzylisoquinoline, the probable precursor of the cularine alkaloids, has been isolated together with 2 new cularines and 10 other alkaloids from Corydalis claviculata. 
  Reference    Z. Naturforsch. 38c, 670—671 (1983); received May 14 1983 
  Published    1983 
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 TEI-XML for    default:Reihe_C/38/ZNC-1983-38c-0670_n.pdf 
 Identifier    ZNC-1983-38c-0670_n 
 Volume    38 
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