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Sökning: WFRF:(Duden T)

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1.
  • Scheunemann, T, et al. (författare)
  • Quantum well resonances in ferromagnetic Co films
  • 1997
  • Ingår i: SOLID STATE COMMUNICATIONS. - : PERGAMON-ELSEVIER SCIENCE LTD. - 0038-1098. ; 104:12, s. 787-792
  • Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
    • The above-vacuum-threshold electronic structure of ultrathin Co films on W(110) is studied for coverages from 1 monoatomic layer (ML) upward. For n ML, the spin-dependent layer-projected local density of states (LDOS) for k parallel to = 0, which is calcu
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2.
  • Nass, K., et al. (författare)
  • In cellulo crystallization of Trypanosoma brucei IMP dehydrogenase enables the identification of genuine co-factors
  • 2020
  • Ingår i: Nature Communications. - : Springer Science and Business Media LLC. - 2041-1723. ; 11:1
  • Tidskriftsartikel (refereegranskat)abstract
    • Sleeping sickness is a fatal disease caused by the protozoan parasite Trypanosoma brucei (Tb). Inosine-5'-monophosphate dehydrogenase (IMPDH) has been proposed as a potential drug target, since it maintains the balance between guanylate deoxynucleotide and ribonucleotide levels that is pivotal for the parasite. Here we report the structure of TbIMPDH at room temperature utilizing free-electron laser radiation on crystals grown in living insect cells. The 2.80 angstrom resolution structure reveals the presence of ATP and GMP at the canonical sites of the Bateman domains, the latter in a so far unknown coordination mode. Consistent with previously reported IMPDH complexes harboring guanosine nucleotides at the second canonical site, TbIMPDH forms a compact oligomer structure, supporting a nucleotide-controlled conformational switch that allosterically modulates the catalytic activity. The oligomeric TbIMPDH structure we present here reveals the potential of in cellulo crystallization to identify genuine allosteric co-factors from a natural reservoir of specific compounds. Trypanosoma brucei inosine-5 '-monophosphate dehydrogenase (IMPDH) is an enzyme in the guanine nucleotide biosynthesis pathway and of interest as a drug target. Here the authors present the 2.8 angstrom room temperature structure of TbIMPDH determined by utilizing X-ray free-electron laser radiation and crystals that were grown in insect cells and find that ATP and GMP are bound at the canonical sites of the Bateman domains.
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