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1.
C. Descoins C. Malosse M. Renou B. Lalanne-Cassou J. Le Duchat d'Aubigny 《Cellular and molecular life sciences : CMLS》1990,46(5):536-539
Summary Pheromonal secretions produced by females and males of the noctuid moth,Mocis megas (Guénée) have been analyzed by gas chromatography and mass spectrometry (EI (electron impact) and CI (chemical ionization)). The female sex pheromone was a blend of (Z,Z,Z) 3,6,9 heneicosatriene (55%) and (Z,Z) 3,6-cis-9S, 10R-epoxyheneicosadiene (45%). Male secretion produced at the level of a prothoracic organ was a blend of two unsaturated major hydrocarbons: (Z,Z) 6,9 heneicosadiene, (64%) and (Z,Z,Z) 3,6,9 heneicosatriene (24%) and C19, C20 and C22 homologues (total ratio 12%), as minor components. The trienic hydrocarbon was present in both sexes. The behavioral role of this male secretion has not yet been elucidated. 相似文献
2.
Summary (Z)-[11,12d
2]-11-Hexadecenoic acid was applied topically to the pheromone gland of silkworm pupa. After eclosion, the gland components were analyzed by capillary GC-MS. (Z)-11-Hexadecenoic acid, a characteristic fatty acid of the gland, was found to be a precursor of bombykol, (Z)-11-hexadecenol and bombyk acid.We are greatful to Dr Y. Tamaki and Mr H. Sugie of the National Institute of Agricultural Science for mass spectrometric analysis and Dr M. Noda of Kyoto Prefectural University for valuable discussion. This work was supported by a Grant-in-aid for Scientific Research (to K.H. No. 56112011) from the Ministry of Education, Science and Culture of Japan. 相似文献
3.
M. Miyakado J. Meinwald L. E. Gilbert 《Cellular and molecular life sciences : CMLS》1989,45(10):1006-1008
Summary A fourteen-membered lactone,(R)-(Z,E)-9,11-octadecadien-13-olide, was isolated from extruded abdominal glands of a Neotropical, nymphalid butterfly,Heliconius pachinus (Lepidoptera). This compound was obtained from mature adults of both sexes, but was not detected in young adults or pupae. 相似文献
4.
M. F. Braconnier J. C. Braekman D. Daloze J. M. Pasteels 《Cellular and molecular life sciences : CMLS》1985,41(4):519-520
Summary The isolation and structure determination of (Z)-1,17-diaminooctadec-9-ene from several species of Coccinellidae is reported.Maître de Recherches du Fonds National de la Recherche Scientifique.We gratefully acknowledge the Fonds National de la Recherche Scientifique for financial support. We express our sincere thanks to Professor K. S. Hagen for a generous gift ofH. leis conformis. 相似文献
5.
D. Daloze M. Kaisin C. Detrain J. M. Pasteels 《Cellular and molecular life sciences : CMLS》1991,47(10):1082-1089
The composition of the Dufour gland of the antC. scutellaris has been reinvestigated by gas chromatography/mass spectrometry. The major components of the gland are (2E,5E,12Z)-4-oxoheneicosa-2,5,12-trien-1-ol acetate (1a) its
14 and
16 double bond isomers (1b and1c), and the corresponding (Z,Z)-dienes5a and5b, all containing an acetylated C21 chain. The previously proposed structures1d, 1e, and5c, which are based on an homologous acetylated C23 chain, correspond to minor derivatives present in the gland. Traces of acetylated C19 homologs, tentatively identified as1g-1i, have also been found. The Dufour gland contents of the two other EuropeanCrematogaster species have also been studied.C. auberti is very similar toC. scutellaris in producing mainly1a, 1b and1c, together with the same higher and lower homologs, but it lacks the dienic derivatives5, whereasC. sordidula contains essentially the acetylated C19 compounds1g, 1h, and1i, accompanied by acetylated C17 homologs. 相似文献
6.
G. Febvay G. Bonnot C. Malosse J. Einhorn 《Cellular and molecular life sciences : CMLS》1993,49(10):915-918
A peculiar fatty acid previously detected in the phospholipids of the pea aphid,Acyrthosiphon pisum, is identified as (Z,Z)-9,12,17-octadecatrienoic acid. It is the first report of this compound in the literature. Comparison of fatty acid profiles of phospholipids between normal and aposymbiotic pea aphids shows that aphid symbionts are not responsible for the biosynthesis of this unusual fatty acid. 相似文献
7.
L. Singh 《Cellular and molecular life sciences : CMLS》1972,28(1):95-97
Résumé Un serpent marin (Enhydrina chistosa Daudin, Hydrophiidae) a 32 chromosomes chez le , 33 chez la , cette dernière ayant unW-chromosome supplémentaire. La digamétie serait: -ZZ; Z W
1W2.
The author is indebted to Prof. S.P. RayChaudhuri for guidance and the University Grants Commission, India, for financial assistance. 相似文献
The author is indebted to Prof. S.P. RayChaudhuri for guidance and the University Grants Commission, India, for financial assistance. 相似文献
8.
W. A. Scheffers 《Cellular and molecular life sciences : CMLS》1961,17(1):40-42
Zusammenfassung Der «negative Pasteureffekt» inBrettanomyces-Hefen kann durch O2, Gärprodukte der Hefen, Diäthyläther, Aldehyde, Ketone und andere Carbonylverbindungen, sowie durch DPN beseitigt werden.
The author expresses his thanks to Prof.T. Wikén for stimulating interest, to Mr.C. J. E. A. Bulder for kindly supplying the respiration-deficient strain ofBr. claussenii, and to MissH. Brakman for valuable technical assistance. The author is indebted to the Koninklijke Nederlandsche Gist- en Spiritusfabriek N. V., Delft, for a gift of pure DPN and DPNH. Part of the work was supported by the Delfts Hogeschoolfonds and by the Netherlands Organization for Pure Research (Z. W. O.). 相似文献
The author expresses his thanks to Prof.T. Wikén for stimulating interest, to Mr.C. J. E. A. Bulder for kindly supplying the respiration-deficient strain ofBr. claussenii, and to MissH. Brakman for valuable technical assistance. The author is indebted to the Koninklijke Nederlandsche Gist- en Spiritusfabriek N. V., Delft, for a gift of pure DPN and DPNH. Part of the work was supported by the Delfts Hogeschoolfonds and by the Netherlands Organization for Pure Research (Z. W. O.). 相似文献
9.
J. M. Wójcik 《Cellular and molecular life sciences : CMLS》1986,42(8):960-962
Summary Karyotypic races of the common shrew which differed with respect to the combinations of chromosome arms in certain 2-armed autosomes were distinguished in Poland. Two eastern races with the arm combinationik, and one western race with the arm combinationhi in the third pair of autosomes were established. In the contact area of these chromosomal forms, the fourth karyotypic race with the arm combinationhk was found.I wish to express my gratitude to my wife, A.M. Wójcik, M. Sc., for her help in catching the animals and making chromosome preparations. I must also offer my thanks to Dr J. Zima for giving me access to his as yet unpublished data, and to Prof. Z. Pucek and Dr S. Fedyk for reading the first draft of this paper. 相似文献
10.
tRNase Z: the end is not in sight 总被引:1,自引:0,他引:1
Although the enzyme tRNase Z has only recently been isolated, a plethora of data has already been acquired concerning the
enzyme. tRNase Z is the endonuclease that catalyzes the removal of the tRNA 3′ trailer, yielding the mature tRNA 3′ end ready
for CCA addition and aminoacylation. Another substrate cleaved by tRNase Z is the small chromogenic phosphodiester bis(p-nitrophenyl)phosphate (bpNPP), which is the smallest tRNase Z substrate known so far. Hitherto the biological function as
tRNA 3′-end processing enzyme has been shown only in one prokaryotic and one eukaryotic organism, respectively. This review
summarizes the present information concerning the two tRNase Z substrates pre-tRNA and bpNPP, as well as the metal requirements
of tRNase Z enzymes.
Received 29 March 2007; received after revision 15 May 2007; accepted 21 May 2007 相似文献
11.
The components of individual Dufours glands excised fromAnoplolepis custodiens workers were analysed by GC-MS. In addition to then-alkanes andn-alkenes previously reported2 in these glands, primary alcohols (C19-C22), secondary alcohols (C20-C23), 2-ketones (C20-C23) and possibly carboxylate ethyl esters (C19 and C21) were identified as components of these glands. It seems possible that these high-boiling compounds are used by the workers in laying trails on the hot sandy surfaces of their characteristic habitat and in lining of the inner walls of nests, but no standard compounds have been available to us for any behavioral studies. 相似文献
12.
H. S. Gundevia 《Cellular and molecular life sciences : CMLS》1985,41(3):383-385
Summary Autoradiographic studies using3H-uridine in the ovary ofHydrophilus olivaceus Fabr. show that nurse cells, the germinal vesicle and follicular nuclei play an important role in contributing RNA whereby the major portion of RNA comes from the nurse cells.I am grateful to Prof. P. S. Ramamurty, School of Life Sciences, University of Hyderabad, Hyderabad, India, for his constant inspiration during the tenure of the present investigation. 相似文献
13.
Summary The photosensitivity of orellanine, the main toxin ofCortinarius orellanus Fries mushrooms, and its transformation to orelline via orellinine is discussed. All three substances were found in methanolic extracts ofCortinarius orellanus andCortinarius speciossimus mushrooms. The problem of homogeneity of orellanine is also discussed.Acknowledgment. The authors wish to express their gratitude to Prof. Dr W. Steglich from the Institut für Organische Chemie und Biochemie der Universität Bonn (Federal Republic of Germany) for having provided them with a sample of dried material ofC. speciossisimus. 相似文献
14.
H. Nakamura J. Kobayashi Y. Ohizumi Y. Hirata 《Cellular and molecular life sciences : CMLS》1982,38(8):897-897
Summary A crude extract of the venom of the marine snailConus textile Linné caused a powerful contraction in the guinea-pig isolated ileum. The extract of the venom has been fractionated, and the fractions monitored by the contractile effect. Arachidonic acid was shown to be present as an active substance.Acknowledgment. We are grateful to Mr Z. Nagahama of Okinawa island for suppling specimens ofC. textile and to Dr T. Higashijima and Prof. T. Miyazawa (Department of Biophysics and Biochemistry, Tokyo University) for 270 MHz1H-NMR-measurements. 相似文献
15.
S. Sokoloff S. Halevy Varda Usieli A. Colorni S. Sarel 《Cellular and molecular life sciences : CMLS》1982,38(3):337-338
Summary The antibiotic properties of 2 acidic C24H40O4 nor-sesterterpenoid peroxides, prianicin A (1) and B (2), against gram-positive and gram-negative bacteria, and against fungi are herein described. They are 4–10 times more effective than tetracycline againstbeta hemolytic Streptococcus, but significantly non-effective against a variety of gram-negative bacteria.Acknowledgment. The authors are grateful to Prof. A. Kjaer of the Organic Chemistry Department of the Technical University of Denmark, for his help and fruitful discussions. 相似文献
16.
Summary LD50 values as well as time-dependent parameters of granulosis virus infections were determined at different times during the last larval instar (L5) of the codling moth,Cydia pomonella L., induced either for pupation or for diapause. A significant increase of tolerance to virus was found in 48-h-old L5 induced for pupation, and 24 h later in L5 induced for diapause. 相似文献
17.
Summary The longitudinal and circular muscle cells of the alimentary canal of the oligochaete wormBranchiura sowerbyi show intercell couplings. These couplings occur between adjoining cells of the same or of the other orientation.We wish to thank Dr S. Kawaguti, Prof. emeritus of Okayama University, for his kind advice. 相似文献
18.
Summary A bromine-containing alkaloid, oxysceptrin, has been isolated as a potent actomyosin ATPase activator from the Okinawan marine spongeAgelas cf.nemoechinata, and the structure elucidated to be1 on the basis of the 2D NMR spectral data.Acknowledgments. We thank Mr Z. Nagahama for his help in sponge collecting and Ms M. Takamatsu for her technical assistance. 相似文献
19.
J. Kobayashi Y. Ohizumi H. Nakamura T. Yamakado T. Matsuzaki Y. Hirata 《Cellular and molecular life sciences : CMLS》1983,39(1):67-69
Summary A 14-membered ring diterpenoid named cembrane, possessing Ca-antagonistic action on the isolated rabbit aorta, has been isolated from a soft coral of the genusSarcophyton, and its structure established by X-ray and spectroscopic data.The authors thank Mr. Z. Nagahama (Okinawa) for collection of soft corals, Miss R. Abe (the present institute) for her skillful assistance, and Dr. T. Higashijima, Prof. T. Miyazawa (Tokyo University), Mr. T. Hayase and Dr. H. Ohtani (Mitsubishi Chemical Industries Ltd) for1H and13C NMR-measurements. 相似文献
20.
Summary BuffaloaS1-casein was treated with carboxypeptidase-A to determine the C-terminal amino acid residue, which was — leucine-tryptophan. The Sakaguchi reagent was used to confirm arginine as the N-terminal amino acid. The colored p-phenylazophenyl thiohydantions of tryptophan and arginine released from C- and N-terminals respectively were quantitatively estimated and from this molecular weights of buffaloaS1 casein were calculated and found to be 26,300 and 26,100 respectively.Acknowledgment. We are thankful to Prof. B. K. Bachhawat, Indian Institute of Chemical Biology, for encouragement. We also thank Prof. S. K. Mukherjee, Bose Institute, for amino acid analysis. Part of this work was completed when the authors were at the University of Kalyani, West Bengal. 相似文献