@article{SchwabSebaldWeiss1972, author = {Schwab, A. J. and Sebald, Walter and Weiss, H.}, title = {Schnelle Markierung eines mitochondrial synthetisiertem Polypeptids einer Cytochromoxidasen-Pr{\"a}paration aus Neurospora}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-84206}, year = {1972}, abstract = {no abstracts available}, subject = {Physiologische Chemie}, language = {de} } @article{SebaldWeissJackl1972, author = {Sebald, Walter and Weiss, H. and Jackl, G.}, title = {{\"U}ber die Abh{\"a}ngigkeit des Zusammenbaus der Cytochromoxidase von der Anwesenheit der Produkte der mitochondrialen Proteinsynthese}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-84192}, year = {1972}, abstract = {no abstract available}, subject = {Physiologische Chemie}, language = {de} } @article{Linsenmair1972, author = {Linsenmair, Karl Eduard}, title = {Anemomenotactic orientation in beetles and scorpions}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-78118}, year = {1972}, abstract = {Scorpions, living in North African semideserts are - in spite of disrupting experimental interferences - able to maintain a certain direction in their natural environment in the dark on a plane surface. Under comparable laboratory conditions, excluding the possibility of light or gravity orientation, they can orient themselves if a directed air current passes over the "arena." In most cases the scorpions do not run necessarily with or against the wind, but rather maintain constant angles to the air current for anywhere from minutes to many hours. They are running anemomenotactically (ref. 1). Under identical conditions many species of beetles also orient themselves to air currents (refs. 2 to 4). The main problems to be solved in the study of anemomenotactic orientation are: (1) Which physical qualities of the air current have an influence on the anemomenotaxis? (2) With which sense organs do beetles and scorpions perceive wind directions? (3) Which physiological mechanism is the basis of anemomenotactic orientation? (4) What is the biological significance of anemomenotaxis in beetles and scorpions? With respect to these problems, more study has been done on beetles than on scorpions. Therefore, due to lack of space, I shall discuss mainly some of the results obtained in experiments with dung beetles (Geotrupes silvaticus, G. ,Stercorarius, G. armifrons, G. niger, Scarabaeus variolosus) and tenebrionid beetles (Tenebrio molitor, Pimelia grossa, P. tenuicomis, Scaurus dubius).}, subject = {Biologie}, language = {en} } @article{SebaldWeissJackl1972, author = {Sebald, Walter and Weiss, H. and Jackl, G.}, title = {Inhibition of the assembly of cytochrome oxidase in Neurospora crassa by chloramphenicol}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-62852}, year = {1972}, abstract = {Cytochrome oxidasewas prepared from Neurospora crassa by chromatography on oleyl polymethacrylic acid resin and separated into seven polypeptides by polyacrylamide gel electrophoresis in the presence of sodium dodecylsulfate. Incorporation oflabelled amino acids into the single polypeptideswas investigated after a pulse labelling in the absence and presence of chloramphenicol, and afterwashing out the inhibitor. Chloramphenicol (4 mg/ml) inhibited amino acid incorporation into all polypeptides 90-95\%• while labeHing of the whole membrane protein was inhibited only 30\%• Mter washing out the inhibitor and further growth of the cells. the four smaller polypeptides were highly labelled, whereas the other polypeptides showed only a. small increase in radioactivity. It is concluded that the four small-sized polypeptides of cytochrome oxidase are synthesized but not integrated into the functional enzyme under the action of chloramphenicol.}, subject = {Biochemie}, language = {en} } @article{SchwabSebaldWeiss1972, author = {Schwab, A. J. and Sebald, Walter and Weiss, H.}, title = {Different pool sizes of the precursor polypeptides of cytochrome oxidase from Neurospora crassa.}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-62841}, year = {1972}, abstract = {Pulse-labelling experiments with growing Neurospora crassa revealed that the polypeptides composing the protein moiety of a cytochrome oxidase preparation are derived from at least four independent pools of precursor polypeptides. The pool sizes range from 2 ° f 0 to 25 °/0 of the amount of the corresponding polypeptide present in cytochrome oxidase. The smallest pool is assigned to a polypeptide of mitochondrial origm. Serial pools were found for one of the polypeptides.}, subject = {Biochemie}, language = {en} } @article{GoebelKreft1972, author = {Goebel, Werner and Kreft, J{\"u}rgen}, title = {Accumulation of replicative intermediates and catenated forms of the colicinogenic factor E\(_1\) in E. coli during the replication at elevated temperatures}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-60625}, year = {1972}, abstract = {No abstract available}, subject = {Biologie}, language = {en} } @book{Linsenmair1972, author = {Linsenmair, Karl Eduard}, title = {Varf{\"o}r sjunger faglarna? : F{\aa}gels{\aa}ngens formeroch funktioner}, isbn = {91-27-24248-X}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-44521}, publisher = {Universit{\"a}t W{\"u}rzburg}, year = {1972}, abstract = {No abstract available}, language = {mul} } @article{KnechtScheer1972, author = {Knecht, Sigrid and Scheer, Ulrich}, title = {Die Liste der Vogelarten von S. Miguel (Azoren) des Gaspar Fructuoso (gestorben 1591)}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-41402}, year = {1972}, abstract = {No abstract available}, language = {de} } @article{EckertFrankeScheer1972, author = {Eckert, W. A. and Franke, Werner W. and Scheer, Ulrich}, title = {Actinomycin D and the central granules in the nuclear pore complex: thin sectioning versus negative staining}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-40636}, year = {1972}, abstract = {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.}, language = {en} } @article{Scheer1972, author = {Scheer, Ulrich}, title = {The ultrastructure of the nuclear envelope of amphibian ooctyes: IV. On the chemical nature of the nuclear pore complex material}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-39500}, year = {1972}, abstract = {In order to investigate the chemical composition of the nuclear pore complexes isolated nuclei from mature Xenopus laevis oocytes were manually fractioned into nucleo· plasmic aggregates and the nuclear envelopes. The whole isolation procedure takes no more than 60- 90 sec, and the pore complexes of the isolated envelopes are well preserved as demonstrated by electron microscopy. Minor nucleoplasmic and cytoplasmic contaminations associated with the isolated nuclear envelopes were determined with electron microscopic morphometry and were found to be quantitatively negligible as far as their mass and nucleic acid content is concerned. The RNA content of the fractions was determined by direct phosphorus analysis after differential alkaline hydrolysis. Approximately 9\% of the total nuclear RNA of the mature Xenopus egg was found to be attached to the nuclear envelope. The nonmembranous elements of one pore complex contain 0.41 X 10- 16 g RNA. This value agrees well with the content estimated from morphometric data. The RNA package density in the pore complexes (270 X 10- 15 g/fJ-3) is compared with the nucleolar, nucleoplasmic and cytoplasmic RNA concentration and is discussed in context with the importance of the pore complexes for the nucleo-cytoplasmic transport of RNA-containing macromolecules. Additionally, the results of the chemical analyses as well as of the 3H-actinomycin D autoradiography and of the nucleoprotein staining method of Bernhard (1969) speak against the occurence of considerable amounts of DNA in the nuclear pore complex structures.}, language = {en} }