Crystal and molecular structure of the quinoxaline antibiotic analog TANDEM (des-N-tetramethyltriostin A)

The crystal structure of TANDEM (des-N-tetramethyltriostin A), a synthetic analogue of the quinoxaline antibiotic triostin A, has been determined independently at -135 and 7 'C and refined to R values of 0.088 and 0.147, respectively. The molecule has approximate 2-fold symmetry, with the quinoxaline chromophores and the disulfide cross-bridge projecting from opposite sides of the peptide ring. The quinoxaline groups are nearly parallel to each other and separated by about 6.5 A. The peptide backbone resembles a distorted antiparallel 13 ribbon joined by intramolecular hydrogen bonds N-H(LVal)--O(L-Ala). At low temperatures, the TANDEM molecule is surrounded by a regular first- and second-order hydration sphere containing 14 independent water molecules. At room temperature, only the first-order hydration shell is maintained. Calculations of the interplanar separation of the quinoxaline groups as a function of their orientation with respect to the peptide ring support the viability of TANDEM to intercalate bifunctionally into DNA.

Eine Erinnerung an den 67. Geburtstag des Herrn Sobernheim (in memory of the 67th birthday of Mr. Sobernheim); Wiesbaden Portraits Groups

Participants include Erna Hirsch, Else Giesenow, Marta Nachmann, Erna Goldschmidt (Goldi), Lotte Strauss, Marta Bruchfeld, Toni Eichenberg, Grete Guthmann, Flora Goldschmidt, Hedwig Trum, Hedel Korhmann, Paula Arendt, Erna Behr and Frl. Minka Friedmann

Students on the steps of the Lehranstalt fuer die Wissenschaft des Judentums (Jewish teachers' seminary); Berlin Institutions; Educational; Schools; Portraits; Groups

Digital Image

Students on the steps of the Lehranstalt fuer die Wissenschaft des Judentums (Jewish teachers' seminary); Berlin Institutions; Educational; Schools; Portraits; Groups

Digital Image

Generation of rotationally dominated galaxies by mergers of pressure-supported progenitors

Through the analysis of a set of numerical simulations of major mergers between initially non-rotating, pressure-supported progenitor galaxies with a range of central mass concentrations, we have shown that: (1) it is possible to generate elliptical-like galaxies, with outside one effective radius, as a result of the conversion of orbital- into internal-angular momentum; (2) the outer regions acquire part of the angular momentum first; (3) both the baryonic and the dark matter components of the remnant galaxy acquire part of the angular momentum, the relative fractions depending on the initial concentration of the merging galaxies. For this conversion to occur the initial baryonic component must be sufficiently dense and/or the encounter should take place on an orbit with high angular momentum. Systems with these hybrid properties have recently been observed through a combination of stellar absorption lines and planetary nebulae for kinematic studies of early-type galaxies. Our results are in qualitative agreement with these observations and demonstrate that even mergers composed of non rotating, pressure-supported progenitor galaxies can produce early-type galaxies with significant rotation at large radii.

Students on the steps of the Lehranstalt fuer die Wissenschaft des Judentums (Jewish teachers' seminary); Berlin Institutions; Educational; Schools; Portraits; Groups

Digital Image

Students on the steps of the Lehranstalt fuer die Wissenschaft des Judentums (Jewish teachers' seminary); Berlin Institutions; Educational; Schools; Portraits; Groups

Digital Image

Komplexe Grundlagenforschung Antijudaismus Verunglimpfung des Judentums in Literatur- und Kirchengeschichte.

Manuscript on Antisemitism in Christianity

Das fatale Loch in der Berliner Theatergeschichte : lecture ueber Persoenlichkeiten des Berliner Theaterlebens und ihre NS-Vergangenheit /

Manuscript: "Das fatale Loch in der Berliner Theatergeschichte". Speech exploring the burdens placed on scholarship and the students of the Theatrical Institute of the Free University of Berlin by the presence of professors who were compromised by their activities during the Nazi era.

Kukuruza Raĭony vozdelyvanii︠a︡ kukuruzy : nailuchshie sorta i sredni︠a︡i︠a︡ urozhaĭnost' sukhogo zerna na 1 des. po dannym seti opytnykh uchastkov iuga Rossii i postoi︠a︡nnykh opytnykh uchrezhdenniĭ

Digital image

Juden, Juden, Juden : juedische Chronik zu Juden, Judentum, juedischer Geschichte und Geschichte des Heiligen Landes, der Heiligen Schrift(en) sowie zur Geschichte Israels, des Antijudaismus, Antisemitismus, der Shoah und des Zionismus von den Anfaengen bis in die Gegenwart, vermehrt um allerlei Wissenswertes und Kurioses aus der juedischen (und nichtjuedischen) Welt - teilweise ergaenzt um Angaben zu geschichtlichen Ereignissen von allgemeiner Bedeutung /

Bd. 1. Bis 7. November 1862. - 2008. - 556 p. -- Bd. 2. 26. November 1862-11. Februar 1909. - 2008. - 560 p. -- Bd. 3. Ab 5. Maerz 1909 [until November 20, 2006]. - 2008. - 560 p.

[BÖCKH: ordentliche Mitglieder des Philologischen Seminars Berlin].

Lists of participants in Prof. August Boeck‘s philological societies in Berlin and in Heidelberg, circa 1822-1857, compiled by Klaus Grotsch.

Militair Pass des Füsilier Moritz Würzweiler.

Military I.D. from the army of the Grand Duchy of Baden for Moritz Würzweiler from Hoffenheim; 1868

[Comités zur Förderung der Enzyklopädie des Judentums] Deutsches Landes-Comité

Circular, naming the committee members for the promotion of the Jewish Encyclopedia; undated (ca. 1928)