+検索条件
-Structure paper
タイトル | Structure of the Acidobacteria homodimeric reaction center bound with cytochrome c. |
---|---|
ジャーナル・号・ページ | Nat Commun, Vol. 13, Issue 1, Page 7745, Year 2022 |
掲載日 | 2022年12月14日 |
![]() | Shishang Dong / Guoqiang Huang / Changhui Wang / Jiajia Wang / Sen-Fang Sui / Xiaochun Qin / ![]() |
PubMed 要旨 | Photosynthesis converts light energy to chemical energy to fuel life on earth. Light energy is harvested by antenna pigments and transferred to reaction centers (RCs) to drive the electron transfer ...Photosynthesis converts light energy to chemical energy to fuel life on earth. Light energy is harvested by antenna pigments and transferred to reaction centers (RCs) to drive the electron transfer (ET) reactions. Here, we present cryo-electron microscopy (cryo-EM) structures of two forms of the RC from the microaerophilic Chloracidobacterium thermophilum (CabRC): one containing 10 subunits, including two different cytochromes; and the other possessing two additional subunits, PscB and PscZ. The larger form contained 2 Zn-bacteriochlorophylls, 16 bacteriochlorophylls, 10 chlorophylls, 2 lycopenes, 2 hemes, 3 FeS clusters, 12 lipids, 2 Ca ions and 6 water molecules, revealing a type I RC with an ET chain involving two hemes and a hybrid antenna containing bacteriochlorophylls and chlorophylls. Our results provide a structural basis for understanding the excitation energy and ET within the CabRC and offer evolutionary insights into the origin and adaptation of photosynthetic RCs. |
![]() | ![]() ![]() ![]() |
手法 | EM (単粒子) |
解像度 | 2.61 Å |
構造データ | EMDB-32228, PDB-7vzg: |
化合物 | ![]() ChemComp-2GO: ![]() ChemComp-BCL: ![]() ChemComp-CLA: ![]() ChemComp-LYC: ![]() ChemComp-CA: ![]() ChemComp-85I: ![]()
ChemComp-UNL: ![]() ChemComp-85N: ![]() ChemComp-HEC: ![]() ChemComp-84Q: ![]() ChemComp-SF4: ![]() ChemComp-HOH: |
由来 |
|
![]() | PHOTOSYNTHESIS / membrane protein |