Characterisation of the photosynthetic complexes from the marine gammaproteobacterium Congregibacter litoralis KT71

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F23%3A00572692" target="_blank" >RIV/60077344:_____/23:00572692 - isvavai.cz</a>

Alternative codes found

RIV/61388971:_____/23:00572692 RIV/60076658:12310/23:43907196

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S0005272822004169?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0005272822004169?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.bbabio.2022.148946" target="_blank" >10.1016/j.bbabio.2022.148946</a>

Result language

angličtina

Original language name

Characterisation of the photosynthetic complexes from the marine gammaproteobacterium Congregibacter litoralis KT71

Original language description

Possibly the most abundant group of anoxygenic phototrophs are marine photoheterotrophic Gammaproteobac-teria belonging to the NOR5/OM60 clade. As little is known about their photosynthetic apparatus, the photo-synthetic complexes from the marine phototrophic bacterium Congregibacter litoralis KT71 were purified and spectroscopically characterised. The intra-cytoplasmic membranes contain a smaller amount of photosynthetic complexes when compared with anaerobic purple bacteria. Moreover, the intra-cytoplasmic membranes contain only a minimum amount of peripheral LH2 complexes. The complexes are populated by bacteriochlorophyll a, spirilloxanthin and two novel ketocarotenoids, with biophysical and biochemical properties similar to previously characterised complexes from purple bacteria. The organization of the RC-LH1 complex has been further char-acterised using cryo-electron microscopy. The overall organisation is similar to the complex from the gam-maproteobacterium Thermochromatium tepidum, with the type-II reaction centre surrounded by a slightly elliptical LH1 antenna ring composed of 16 alpha beta-subunits with no discernible gap or pore. The RC-LH1 and LH2 apoproteins are phylogenetically related to other halophilic species but LH2 also to some alphaproteobacterial species. It seems that the reduction of light-harvesting apparatus and acquisition of novel ketocarotenoids in Congregibacter litoralis KT71 represent specific adaptations for operating the anoxygenic photosynthesis under aerobic conditions at sea.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10606 - Microbiology

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2023

Confidentiality

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

Name of the periodical

Biochimica Et Biophysica Acta-Bioenergetics

ISSN

0005-2728

e-ISSN

1879-2650

Volume of the periodical

1864

Issue of the periodical within the volume

2

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

11

Pages from-to

148946

UT code for WoS article

000995442400001

EID of the result in the Scopus database

2-s2.0-85143117335