photosystem I reaction center / 光化学系I / photosynthetic electron transport chain / 光化学系I / photosynthetic electron transport in photosystem I / chlorophyll binding / plasma membrane-derived thylakoid membrane / 光合成 / FMN binding / 4 iron, 4 sulfur cluster binding ...photosystem I reaction center / 光化学系I / photosynthetic electron transport chain / 光化学系I / photosynthetic electron transport in photosystem I / chlorophyll binding / plasma membrane-derived thylakoid membrane / 光合成 / FMN binding / 4 iron, 4 sulfur cluster binding / electron transfer activity / magnesium ion binding / metal ion binding 類似検索 - 分子機能
Flavodoxin, long chain / Photosystem I reaction center subunit PsaK / Photosystem I reaction centre subunit PsaK / Flavodoxin, conserved site / Flavodoxin signature. / Photosystem I reaction centre subunit PsaK superfamily / Photosystem I psaG and psaK proteins signature. / Photosystem I reaction center subunit V/PsaK / Photosystem I psaG / psaK / Photosystem I PsaL, reaction centre subunit XI ...Flavodoxin, long chain / Photosystem I reaction center subunit PsaK / Photosystem I reaction centre subunit PsaK / Flavodoxin, conserved site / Flavodoxin signature. / Photosystem I reaction centre subunit PsaK superfamily / Photosystem I psaG and psaK proteins signature. / Photosystem I reaction center subunit V/PsaK / Photosystem I psaG / psaK / Photosystem I PsaL, reaction centre subunit XI / Photosystem I, reaction centre subunit XI / Photosystem I PsaL, reaction centre subunit XI superfamily / Photosystem I reaction centre subunit XI / Photosystem I reaction centre subunit VIII / Photosystem I reaction centre subunit VIII / Photosystem I reaction centre subunit VIII superfamily / Photosystem I PsaF, reaction centre subunit III / Photosystem I PsaF, reaction centre subunit III superfamily / Photosystem I reaction centre subunit III / Photosystem antenna protein-like / Photosystem antenna protein-like superfamily / Photosystem II protein / Photosystem I PsaJ, reaction centre subunit IX / Photosystem I PsaD / Photosystem I PsaJ, reaction centre subunit IX superfamily / Photosystem I, reaction centre subunit PsaD superfamily / Photosystem I reaction centre subunit IX / PsaJ / PsaD / Photosystem I PsaE, reaction centre subunit IV / Photosystem I reaction centre subunit IV / PsaE / Photosystem I protein PsaC / Photosystem I PsaA / Photosystem I PsaB / Photosystem I PsaA/PsaB, conserved site / Photosystem I psaA and psaB proteins signature. / Photosystem I PsaA/PsaB / Photosystem I PsaA/PsaB superfamily / Photosystem I psaA/psaB protein / Electron transport accessory-like domain superfamily / 4Fe-4S dicluster domain / 4Fe-4S ferredoxin, iron-sulphur binding, conserved site / 4Fe-4S ferredoxin-type iron-sulfur binding region signature. / フラボドキシン / Flavodoxin-like domain profile. / Flavodoxin/nitric oxide synthase / 4Fe-4S ferredoxin-type iron-sulfur binding domain profile. / 4Fe-4S ferredoxin-type, iron-sulphur binding domain / Flavoprotein-like superfamily 類似検索 - ドメイン・相同性
フラボドキシン / Iron stress-induced chlorophyll-binding protein / Photosystem I reaction center subunit XI / Photosystem I reaction center subunit VIII / Photosystem I P700 chlorophyll a apoprotein A1 / Photosystem I P700 chlorophyll a apoprotein A2 / Photosystem I reaction center subunit IV / Photosystem I reaction center subunit III / Photosystem I reaction center subunit IX / Photosystem I reaction center subunit II ...フラボドキシン / Iron stress-induced chlorophyll-binding protein / Photosystem I reaction center subunit XI / Photosystem I reaction center subunit VIII / Photosystem I P700 chlorophyll a apoprotein A1 / Photosystem I P700 chlorophyll a apoprotein A2 / Photosystem I reaction center subunit IV / Photosystem I reaction center subunit III / Photosystem I reaction center subunit IX / Photosystem I reaction center subunit II / Photosystem I reaction center subunit PsaK / Photosystem I iron-sulfur center 類似検索 - 構成要素
ジャーナル: Nat Plants / 年: 2020 タイトル: Structural basis for energy and electron transfer of the photosystem I-IsiA-flavodoxin supercomplex. 著者: Peng Cao / Duanfang Cao / Long Si / Xiaodong Su / Lijin Tian / Wenrui Chang / Zhenfeng Liu / Xinzheng Zhang / Mei Li / 要旨: Under iron-deficiency stress, which occurs frequently in natural aquatic environments, cyanobacteria reduce the amount of iron-enriched proteins, including photosystem I (PSI) and ferredoxin (Fd), ...Under iron-deficiency stress, which occurs frequently in natural aquatic environments, cyanobacteria reduce the amount of iron-enriched proteins, including photosystem I (PSI) and ferredoxin (Fd), and upregulate the expression of iron-stress-induced proteins A and B (IsiA and flavodoxin (Fld)). Multiple IsiAs function as the peripheral antennae that encircle the PSI core, whereas Fld replaces Fd as the electron receptor of PSI. Here, we report the structures of the PSI-IsiA-Fld and PSI-IsiA supercomplexes from Synechococcus sp. PCC 7942, revealing features that are different from the previously reported PSI structures, and a sophisticated pigment network that involves previously unobserved pigment molecules. Spectroscopic results demonstrated that IsiAs are efficient light harvesters for PSI. Three Flds bind symmetrically to the trimeric PSI core-we reveal the detailed interaction and the electron transport path between PSI and Fld. Our results provide a structural basis for understanding the mechanisms of light harvesting, energy transfer and electron transport of cyanobacterial PSI under stressed conditions.