Modular antenna of photosystem I in secondary plastids of red algal origin: a Nannochloropsis oceanica case study

Kód výsledku v IS VaVaI

RIV/60077344:_____/17:00479343 - isvavai.cz

Nalezeny alternativní kódy

RIV/60076658:12310/17:43895585

Výsledek na webu

http://dx.doi.org/10.1007/s11120-016-0315-1

DOI - Digital Object Identifier

10.1007/s11120-016-0315-1

Jazyk výsledku

angličtina

Název v původním jazyce

Modular antenna of photosystem I in secondary plastids of red algal origin: a Nannochloropsis oceanica case study

Popis výsledku v původním jazyce

Photosystem I (PSI) is a multi-subunit integral pigment-protein complex that performs light-driven electron transfer from plastocyanin to ferredoxin in the thylakoid membrane of oxygenic photoautotrophs. In order to achieve the optimal photosynthetic performance under ambient irradiance, the absorption cross section of PSI is extended by means of peripheral antenna complexes. In eukaryotes, this role is played mostly by the pigment-protein complexes of the LHC family. The structure of the PSI-antenna supercomplexes has been relatively well understood in organisms harboring the primary plastid: red algae, green algae and plants. The secondary endosymbiotic algae, despite their major ecological importance, have so far received less attention. Here we report a detailed structural analysis of the antenna-PSI association in the stramenopile alga Nannochloropsis oceanica (Eustigmatophyceae). Several types of PSI-antenna assemblies are identified allowing for identification of antenna docking sites on the PSI core. Instances of departure of the stramenopile system from the red algal model of PSI-Lhcr structure are recorded, and evolutionary implications of these observations are discussed.

Název v anglickém jazyce

Modular antenna of photosystem I in secondary plastids of red algal origin: a Nannochloropsis oceanica case study

Popis výsledku anglicky

Photosystem I (PSI) is a multi-subunit integral pigment-protein complex that performs light-driven electron transfer from plastocyanin to ferredoxin in the thylakoid membrane of oxygenic photoautotrophs. In order to achieve the optimal photosynthetic performance under ambient irradiance, the absorption cross section of PSI is extended by means of peripheral antenna complexes. In eukaryotes, this role is played mostly by the pigment-protein complexes of the LHC family. The structure of the PSI-antenna supercomplexes has been relatively well understood in organisms harboring the primary plastid: red algae, green algae and plants. The secondary endosymbiotic algae, despite their major ecological importance, have so far received less attention. Here we report a detailed structural analysis of the antenna-PSI association in the stramenopile alga Nannochloropsis oceanica (Eustigmatophyceae). Several types of PSI-antenna assemblies are identified allowing for identification of antenna docking sites on the PSI core. Instances of departure of the stramenopile system from the red algal model of PSI-Lhcr structure are recorded, and evolutionary implications of these observations are discussed.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10608 - Biochemistry and molecular biology

Projekt

GP14-01377P: Struktura a funkce světlosběrných komplexů vybraných heterokontních řas: integrace biochemických, biofyzikálních a genomických dat

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Photosynthesis Research

ISSN

0166-8595

e-ISSN

—

Svazek periodika

131

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

12

Strana od-do

255-266

Kód UT WoS článku

000394536800003

EID výsledku v databázi Scopus

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