Refine
Year of publication
Document Type
- Journal article (1384)
- Doctoral Thesis (798)
- Conference Proceeding (26)
- Book article / Book chapter (18)
- Review (16)
- Preprint (13)
- Book (5)
- Report (3)
- Master Thesis (2)
- Other (1)
Language
- English (1889)
- German (376)
- Multiple languages (2)
Keywords
- Biochemie (81)
- Taufliege (69)
- Drosophila (51)
- Physiologische Chemie (50)
- Genexpression (36)
- Biologie (34)
- Drosophila melanogaster (32)
- evolution (30)
- Biene (29)
- Maus (29)
Institute
- Theodor-Boveri-Institut für Biowissenschaften (2267) (remove)
Sonstige beteiligte Institutionen
- Institut für Tierökologie und Tropenbiologie (2)
- Mildred-Scheel-Nachwuchszentrum (2)
- Ökologische Station Fabrikschleichach (2)
- Albert-Ludwigs-Universität Freiburg (1)
- Boehringer Ingelheim Pharma GmbH & Co. KG (1)
- Boston Children's Hospital (1)
- Center for Computational and Theoretical Biology (CCTB), Universität Würzburg (1)
- Chemical Biology Laboratory, National Cancer Institue, Frederick (USA) (1)
- Core Unit Systemmedizin (1)
- DNA Analytics Core Facility, Biocenter, University of Wuerzburg, Wuerzburg, Germany (1)
ResearcherID
- D-1221-2009 (1)
- J-8841-2015 (1)
- N-2030-2015 (1)
EU-Project number / Contract (GA) number
- 244090 (7)
- 311781 (5)
- 226852 (4)
- 289706 (3)
- 602805 (3)
- 669830 (3)
- 686070 (3)
- 721016 (3)
- 018741 (2)
- 259867 (2)
- 268985 (2)
- 305312 (2)
- 618045 (2)
- 678119 (2)
- 728018 (2)
- 765937 (2)
- 031A408B (1)
- 031A409B (1)
- 037220 (1)
- 101041177 (1)
- 115300 (1)
- 20100317 (1)
- 201052 (1)
- 216027 (1)
- 222719 (1)
- 223175 (1)
- 250194 (1)
- 250194-Carnivorom (1)
- 253511 (1)
- 260464 (1)
- 260986 (1)
- 261474 (1)
- 268962 (1)
- 270089 (1)
- 294823 (1)
- 306240 (1)
- 316790 (1)
- 336045 (1)
- 340602 (1)
- 506675 (1)
- 517836 (1)
- 602812 (1)
- 616346 (1)
- 633784 (1)
- 634361 (1)
- 634935 (1)
- 638536 (1)
- 638988 (1)
- 660375 (1)
- 667787 (1)
- 677673 (1)
- 686271 (1)
- 695376 (1)
- 715466 (1)
- 741491 (1)
- 759139 (1)
- 834709 (1)
- 835102) (1)
- 840741 (1)
- 848002 (1)
- 853546 (1)
- 955910 (1)
- CoG 721016–HERPES (1)
- ERC-2018-ADG/NCI-CAD (1)
- ESF-ZDEX 4.0 (1)
- ESF_14-BM-A55-0005_16 (1)
Thin section electron microscopy of Actinomycin D treated Tetrahymena cells and amphibian oocytes (Xenopus laevis, Triturus aZpestris) reveal no reduction in the central granules in the nuclear pore complexes. Possible reasons for the diversity between these results and earlier observations using negatively stained isolated nuclear envelopes from the same objects are discussed. The results clearly show that the presence of central granules within the nuclear pores does neither depend on nuclear RNA synthesis nor does indicate nucleocytoplasmic RNA transport. This conclusion leads to a reconsideration of the nature of the central granule. The functioning of the central granule of the nuclear pore complexes is further discussed in connection with recent studies on the ultrastructure of various types of cisternal pores.
Radioaetive leueine was ineorporated by N eurospora crassa mitoehondria in vivo in the presence of cyeloheximide. When the membrane protein of these mitochondria was ehromatographieally separated on oleyl polymethaerylie aeid resin, & nurober of fraetions were obtained whieh differ with respeet to their eontents of radioaetivity and eytoehromes. The highest speeifie radioaetivity was found in the fraction eontaining eytoehrome aa3• This fraetion proved to be a pure and enzymatically aetive cytoehrome oxidase. Its ratio of absorbanee at 280 nm (ox)/ 443 nm (red.) was 2.1. By means of sodium dodeeylsulfate gel-electrophoresis, this enzymewas separated into five polypeptides with molecular weights of 30000, 20000, 13000, 10000, and 8000. Only the polypeptide with the molecular weight 20000 displayed a high specific radioaetivity.
Hvorfor synger fuglene?
(1971)
No abstract available
Die Vögel der Azoren
(1971)
Während einer viermonatigen Reise zu allen neun Azoreninseln wurde der gesamte Brutvogelbestand dieses Archipels untersucht. Die Befunde sind in einer detaillierten Artenliste zusammengefaßt, ergänzt durch ökologische und brutbiologische Anmerkungen. Zahlreiche Beobachtungen lassen vermuten, daß vor allem Stieglitz und Kanarienvogel tägliche und auch jahreszeitlich bedingte interinsulare Flüge unternehmen. Die Lautäußerungen sechs verschiedener Vogel arten sind in Klangspektrogrammen dargestellt. Ein mathematischer Ansatz zeigt, daß sich die Anzahl der auf einer bestimmten Insel brütenden Landvogelarten umgekehrt proportional zur Entfernung zum europäischen Festland und proportional zum Logarithmus naturalis der Inselfläche verhält. Die abgeleitete Formel läßt sich prinzipiell auch auf andere Atlantikinseln anwenden, die weitgehend vom Festland isoliert sind.
No abstract available
A small fraction of HeLa cells within an exponentially growing culture showed cisternal differentiations, such as cytoplasmic as well as intranuclear annulate lamellae and special smooth surfaced endoplasmic reticulum aggregates with a typical "Cotte de maillet" appearance. Additionally, clusters of dense granules were observed in the cytoplasm which were often associated with polysomes and strongly resembled the so-called "heavy bodies" known in particular in diverse oocytes. The functional meaning of these structures is discussed. Moreover, it is deduced from the ultrastructural identity of the pore complexes in the nuclear envelope and the cytoplasmic and intranuclear annulate lamellae that the pore complex material with its highly ordered arrangement is not a structure characteristic for nucleocytoplasmically migrating material, but rather is a general structural expression of a tight binding of ribonucleoprotein (RNP) to cisternal membranes. The pore complexes are thought of as representing sites of a RNP-storage. A similar functioning is hypothesized for the "heavy body"like aggregates. To the current hypotheses on the formation of annulate lamellae and the nuclear envelope, which are based on the concept of membrane continuities and constancies, the alternative view of a self assembly mechanism of membrane constituents on nucleoprotein structures is added.