The pigment-protein network of a diatom photosystem II-light-harvesting antenna supercomplex.
Science
; 365(6452)2019 08 02.
Article
em En
| MEDLINE
| ID: mdl-31371578
ABSTRACT
Diatoms play important roles in global primary productivity and biogeochemical cycling of carbon, in part owing to the ability of their photosynthetic apparatus to adapt to rapidly changing light intensity. We report a cryo-electron microscopy structure of the photosystem II (PSII)-fucoxanthin (Fx) chlorophyll (Chl) a/c binding protein (FCPII) supercomplex from the centric diatom Chaetoceros gracilis The supercomplex comprises two protomers, each with two tetrameric and three monomeric FCPIIs around a PSII core that contains five extrinsic oxygen-evolving proteins at the lumenal surface. The structure reveals the arrangement of a huge pigment network that contributes to efficient light energy harvesting, transfer, and dissipation processes in the diatoms.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Diatomáceas
/
Complexo de Proteína do Fotossistema II
/
Proteínas de Ligação à Clorofila
Idioma:
En
Revista:
Science
Ano de publicação:
2019
Tipo de documento:
Article