Concerted motions in the photoactive yellow protein

被引:24
作者
van Aalten, DMF
Hoff, WD
Findlay, JBC
Crielaard, W
Hellingwerf, KJ
机构
[1] Univ Leeds, Dept Biochem & Mol Biol, Leeds LS2 9JT, W Yorkshire, England
[2] Univ Amsterdam, Biocentrum, EC Slater Inst, Dept Microbiol, Amsterdam, Netherlands
来源
PROTEIN ENGINEERING | 1998年 / 11卷 / 10期
关键词
chromophore; essential dynamics; molecular dynamics; photocycle; photo-active yellow protein; p-coumaric acid;
D O I
10.1093/protein/11.10.873
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Molecular dynamics simulations have been performed with the aim of identifying concerted backbone motions in the photoactive yellow protein. Application of the essential dynamics method revealed large, chromophore-linked fluctuations of the protein in the ground state, as well as in a form containing the isomerized chromophore. Various loops become more mobile upon isomerization of the chromophore, including a loop which is part of the PAS domain moth, found in light perception proteins. The hinge points identified in these fluctuations correlate with the positions of evolutionary conserved glycines. The results derived from the simulations directly correlate with available experimental data, provide a framework for understanding the dynamic behaviour of the yellow protein and give clues to subsequent steps in the signal transduction pathway.
引用
收藏
页码:873 / 879
页数:7
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