Simulation study of chiral two-dimensional ultraviolet spectroscopy of the protein backbone.
Simulation study of chiral two-dimensional ultraviolet spectroscopy of the protein backbone.
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DOI:
10.1021/ja101968g
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发表时间:
2010-06-09
影响因子:
15
通讯作者:
Mukamel, Shaul
中科院分区:
文献类型:
--
作者:
Abramavicius, Darius;Jiang, Jun;Bulheller, Benjamin M.;Hirst, Jonathan D.;Mukamel, Shaul
Amide n –π* and π-π* excitations around 200 nm are prominent spectroscopic signatures of the protein backbone, which are routinely used in ultraviolet (UV) circular dichroism for structure characterization. Recently developed ultrafast laser sources may be used to extend these studies to two dimensions (2D). We apply a new algorithm for modelling protein electronic transitions to simulate two-dimensional ultraviolet (2DUV) photon echo signals in this regime and to identify signatures of protein backbone secondary (and tertiary) structure. Simulated signals for a set of globular and fibrillar proteins and their specific regions reveal characteristic patterns of helical and sheet secondary structures. We investigate how these patterns vary and converge with the size of the structural motif. Specific chiral polarization configurations of the UV pulses are found to be sensitive to aspects of the protein structure. This information significantly augments that available from linear circular dichroism.
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影响因子:
62.1
作者:
Abramavicius, Darius;Palmieri, Benoit;Voronine, Dmitri V.;Sanda, Frantisek;Mukamel, Shaul
通讯作者:
Mukamel, Shaul
影响因子:
4.4
作者:
JORGENSEN, WL;CHANDRASEKHAR, J;KLEIN, ML
通讯作者:
KLEIN, ML
影响因子:
4.4
作者:
ESSMANN, U;PERERA, L;PEDERSEN, LG
通讯作者:
PEDERSEN, LG
DOI:
10.1073/pnas.0408646102
发表时间:
2005-01-18
影响因子:
11.1
作者:
Chung, HS;Khalil, M;Tokmakoff, A
通讯作者:
Tokmakoff, A
影响因子:
4.4
作者:
Milota, F.;Sperling, J.;Kauffmann, H. F.
通讯作者:
Kauffmann, H. F.