Proton pathways in a [NiFe]‐hydrogenase: A theoretical study
Proton pathways in a [NiFe]‐hydrogenase: A theoretical study
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[NiFe]-氢化酶中的质子途径:理论研究
DOI:
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发表时间:
2008
期刊:
影响因子:
--
通讯作者:
A. Baptista
中科院分区:
文献类型:
--
作者:
V. Teixeira;C. M. Soares;A. Baptista
We present here a theoretical study to investigate possible proton pathways in the [NiFe]‐hydrogenase from Desulfovibrio gigas. The approach used in this study consists of a combination of Poisson–Boltzmann and Monte Carlo simulations together with a distance‐based network analysis to find possible groups involved in the proton transfer. Results obtained at different pH values show a reasonable number of proton active residues distributed by the protein interior and surface, with a concentration around the metal centres. The electrostatic interactions in this protein are strong, as shown by the unusual shape of the titration curves of several sites. Some residue pairs show strongly correlated protonations, indicating the sharing and probably exchange of a proton between them. The conjugation of the PB and MC simulations with the distance‐based analysis allows a detailed characterization of the possible proton pathways. We discuss previous suggestions and propose a new complete pathway for the proton transfer between the active site and the surface. This pathway is mainly composed of histidines and glutamic acid residues. Proteins 2008. © 2007 Wiley‐Liss, Inc.
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DOI:
10.1016/j.bbapap.2006.08.007
发表时间:
2006-11
期刊:
Biochimica et biophysica acta
影响因子:
--
作者:
A. Warshel;P. K. Sharma;Mitsunori Kato;W. W. Parson-W.
通讯作者:
A. Warshel;P. K. Sharma;Mitsunori Kato;W. W. Parson-W.
DOI:
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发表时间:
1989
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Teixeira,M;Moura,I;Xavier,AV;Moura,JJ;LeGall,J;DerVartanian,DV;PeckJr,HD;Huynh,BH
通讯作者:
Huynh,BH
DOI:
--
发表时间:
1985
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Teixeira,M;Moura,I;Xavier,AV;Huynh,BH;DerVartanian,DV;PeckJr,HD;LeGall,J;Moura,JJ
通讯作者:
Moura,JJ
DOI:
10.1016/j.bbabio.2007.01.015
发表时间:
2007-03
期刊:
Biochimica et biophysica acta
影响因子:
--
作者:
M. Olsson;P. Siegbahn;M. Blomberg;A. Warshel
通讯作者:
M. Olsson;P. Siegbahn;M. Blomberg;A. Warshel
DOI:
10.1073/pnas.0510860103
发表时间:
2006-04-25
影响因子:
11.1
作者:
Olsson, MHM;Warshel, A
通讯作者:
Warshel, A