2.4-Å structure of the double-ring Gemmatimonas phototrophica photosystem.
Details
Download: 35171663_BIB_3020E5CA16E0.pdf (5092.12 [Ko])
State: Public
Version: Final published version
License: CC BY-NC 4.0
State: Public
Version: Final published version
License: CC BY-NC 4.0
Serval ID
serval:BIB_3020E5CA16E0
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
2.4-Å structure of the double-ring Gemmatimonas phototrophica photosystem.
Journal
Science advances
ISSN
2375-2548 (Electronic)
ISSN-L
2375-2548
Publication state
Published
Issued date
18/02/2022
Peer-reviewed
Oui
Volume
8
Number
7
Pages
eabk3139
Language
english
Notes
Publication types: Journal Article
Publication Status: ppublish
Publication Status: ppublish
Abstract
Phototrophic Gemmatimonadetes evolved the ability to use solar energy following horizontal transfer of photosynthesis-related genes from an ancient phototrophic proteobacterium. The electron cryo-microscopy structure of the Gemmatimonas phototrophica photosystem at 2.4 Å reveals a unique, double-ring complex. Two unique membrane-extrinsic polypeptides, RC-S and RC-U, hold the central type 2 reaction center (RC) within an inner 16-subunit light-harvesting 1 (LH1) ring, which is encircled by an outer 24-subunit antenna ring (LHh) that adds light-gathering capacity. Femtosecond kinetics reveal the flow of energy within the RC-dLH complex, from the outer LHh ring to LH1 and then to the RC. This structural and functional study shows that G. phototrophica has independently evolved its own compact, robust, and highly effective architecture for harvesting and trapping solar energy.
Pubmed
Web of science
Open Access
Yes
Create date
18/03/2022 19:07
Last modification date
25/01/2024 8:33