Reinterpretation of the electron density at the site of the eighth bacteriochlorophyll in the FMO protein from Pelodictyon phaeum.
Reinterpretation of the electron density at the site of the eighth bacteriochlorophyll in the FMO protein from Pelodictyon phaeum.
复制标题
DOI:
10.1007/s11120-012-9735-8
复制
发表时间:
2012-04
影响因子:
3.7
通讯作者:
Allen, James P.
中科院分区:
文献类型:
--
作者:
Tronrud, Dale E.;Allen, James P.
The Fenna-Matthews-Olson antenna protein from the green bacterium Pelodictyon phaeum mediates the energy transfer from a peripheral antenna complex to the membrane-bound reaction center. The three-dimensional structure of this protein has been previously modeled using X-ray diffraction to a resolution limit of 2.0 Å, with Rwork and Rfree values of 16.6% and 19.9% respectively ( Photosyn Res 107: 139–150). This model shows the protein as consisting of β-sheets surrounding several bacteriochlorophyll cofactors. While most of the model clearly matches the electron density maps, in this paper we re-examine the electron density for a specific feature, namely the eighth bacteriochlorophyll a cofactor. This electron density is now interpreted as arising primarily from the end of an otherwise disordered polyethylene glycol molecule. Additional electron density is present but the density is weak and cannot be unambiguously assigned. The new model has Rwork and Rfree values of 16.2% and 19.0%, respectively.
登录
查看更多内容
DOI:
10.1107/s0907444904019158
发表时间:
2004-12-01
影响因子:
2.2
作者:
Emsley, P;Cowtan, K
通讯作者:
Cowtan, K
DOI:
10.1073/pnas.1005484107
发表时间:
2010-07-20
影响因子:
11.1
作者:
Panitchayangkoon, Gitt;Hayes, Dugan;Engel, Gregory S.
通讯作者:
Engel, Gregory S.
影响因子:
3.5
作者:
Ben-Shem, A;Frolow, F;Nelson, N
通讯作者:
Nelson, N
DOI:
10.1107/s0907444902016657
发表时间:
2002-11-01
影响因子:
2.2
作者:
Adams, PD;Grosse-Kunstleve, RW;Terwilliger, TC
通讯作者:
Terwilliger, TC
DOI:
10.1073/pnas.0701201104
发表时间:
2007-09-04
影响因子:
11.1
作者:
Read, Elizabeth L.;Engel, Gregory S.;Fleming, Graham R.
通讯作者:
Fleming, Graham R.