Determination of the spectral diffusion kernel of a protein by single-molecule spectroscopy

被引：28

作者：

Baier, Juergen ^{[1
]}

Richter, Martin F. ^{[1
]}

Cogdell, Richard J. ^{[2
]}

Oellerich, Silke ^{[1
]}

Kohler, Juergen ^{[1
]}

机构：

[1] Univ Bayreuth, BIMF, D-95440 Bayreuth, Germany

[2] Univ Glasgow, Inst Biomed & Life Sci, Glasgow G12 8QQ, Lanark, Scotland

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 100卷 / 01期

基金：

英国生物技术与生命科学研究理事会;

关键词：

D O I：

10.1103/PhysRevLett.100.018108

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The spectral dynamics of individual bacterial light-harvesting-2 pigment-protein complexes have been studied at 1.4 K. The data provided the spectral diffusion kernel of the optical transitions of the embedded B800 bacteriochlorophyll a pigments. This kernel can be described by either a single Gaussian function or a superposition of Gaussian functions. Moreover, we found that the chromophores interact with two classes of TLSs that can be distinguished by their distance from the chromophore and are most likely located outside (class 1) and inside (class 2) the protein matrix.

引用

页数：4

共 30 条

[1] Calculations of spectroscopic properties of the LH2 bacteriochlorophyll - Protein antenna complex from Rhodopseudomonas acidophila [J].