Sökning: "pddem"

Hittade 4 avhandlingar innehållade ordet pddem.

  1. 1. Extended Förster Theory of Electronic Energy Transport within Pairs of Reorienting Chromophoric Molecules

    Författare :Nils Norlin; Lennart B.-Å. Johansson; Yehudi K. Levine; Umeå universitet; []
    Nyckelord :electronic energy migration transfer; extended Förster theory; orientation factor; DDEM; PDDEM; time-resolved fluorescence anisotropy; time-correlated single photon counting; Brownian dynamics; fysikalisk kemi; Physical Chemistry;

    Sammanfattning : An extended Förster theory (EFT), previously derived (L. B.-Å. Johansson et al. LÄS MER

  3. 2. Electronic Energy Transfer within Asymmetric Pairs of Fluorophores: Partial Donor-Donor Energy Migration (PDDEM)

    Författare :Stanislav Kalinin; Lennart B.-Å. Johansson; Helge Lemmetyinen; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Physical chemistry; fluorescence resonance energy transfer FRET ; donor-donor energy migration DDEM ; homotransfer; fluorescence relaxation; lifetimes; time-resolved fluorescence anisotropy; time-correlated single photon counting; distance measurements; protein structure; Fysikalisk kemi; Physical chemistry; Fysikalisk kemi; Physical Chemistry; fysikalisk kemi;

    Sammanfattning : A kinetic model of electronic energy migration within pairs of photophysically non-identical fluorophores has been developed. The model applies to fluorescent groups that exhibit different photophysical and spectral properties when attached to different positions in a macromolecule. LÄS MER

  4. 3. On the quantitative analysis of electronic energy transfer/migration in proteins studied by fluorescence spectroscopy

    Författare :Mikael Isaksson; Lennart Johansson; Bo Albinsson; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Biophysical Chemistry; Biophysical chemistry; Biofysikalisk kemi;

    Sammanfattning : Two recently developed theories of electronic energy transfer/migration were for the first time applied to real protein systems for extracting molecular distances. The partial donor-donor energy migration (PDDEM) is an extension to the previously developed donor-donor energy migration (DDEM, F Bergström et al PNAS 96, 1999, 12477) which allows using chemically identical but photophysically different fluorophores in energy migration experiments. LÄS MER

  5. 4. Plasminogen activator inhibitor type 2 : a unique serpin with two mobile loops

    Författare :Sergei Lobov; Umeå universitet; []
    Nyckelord :;

    Sammanfattning : The superfamily of serine protease inhibitors (serpins) is a large group of proteins with diverse functions but a common tertiary structure. Active serpins are highly metastable molecules. Metastability is the property underlying the success and ubiquitousness of serpins. LÄS MER