PXD056502
PXD056502 is an original dataset announced via ProteomeXchange.
Dataset Summary
| Title | Red-shifted chlorophyll a absorption in Light-Harvesting Complexes - The case of Trachydiscus minutus |
| Description | Photosynthetic organisms harvest light for energy. Some eukaryotic algae have specialized in harvesting far-red light by tuning chlorophyll a absorption through a mechanism still to be elucidated. Here, we combined optically detected magnetic resonance and pulsed electron paramagnetic resonance measurements on red-adapted light-harvesting complexes, rVCP, isolated from the freshwater eustigmatophyte alga Trachydiscus minutus to identify the location of the pigments responsible for this remarkable adaptation. The pigments have been found to belong to an excitonic cluster of chlorophylls a at the core of the complex, close to the central carotenoids in L1/L2 sites. A pair of structural features of the Chl a403/a603 binding site, namely the histidine-to-asparagine substitution in the magnesium-ligation residue and the small size of the amino acid at the i-4 position, resulting in a [A/G]xxxN motif, are proposed to be the origin of this trait. Phylogenetic analysis of various eukaryotic red antennae identified several potential LHCs that could share this tuning mechanism. |
| HostingRepository | MassIVE |
| AnnounceDate | 2024-10-24 |
| AnnouncementXML | Submission_2024-10-24_06:23:36.360.xml |
| DigitalObjectIdentifier | |
| ReviewLevel | Non peer-reviewed dataset |
| DatasetOrigin | Original dataset |
| RepositorySupport | Unsupported dataset by repository |
| PrimarySubmitter | Peter Konik |
| SpeciesList | scientific name: Trachydiscus minutus; |
| ModificationList | Oxidation; Carbamidomethyl |
| Instrument | timsTOF Pro |
Dataset History
| Revision | Datetime | Status | ChangeLog Entry |
|---|---|---|---|
| 0 | 2024-10-04 07:17:06 | ID requested | |
| ⏵ 1 | 2024-10-24 06:23:36 | announced |
Publication List
| no publication |
Keyword List
| submitter keyword: Light-harvesting, Red-shifted LHC, triplet, ODMR, EPR, eustigmatophyte |
Contact List
| Radek Litvin | |
|---|---|
| contact affiliation | Czech Academy of Sciences, Biology Centre, Institute of Plant Molecular Biology, Branisovska 1760, 370 05 Ceske Budejovice, Czech Republic; Institute of Chemistry, Faculty of Science, University of South Bohemia, Branisovska 1760, 370 05 Ceske Budejovice, Czech Republic |
| contact email | rlitvin@prf.jcu.cz |
| lab head | |
| Alessandro Agostini | |
| contact affiliation | Department of Chemical Sciences, University of Padova, via Marzolo 1, 35131, Padova, Italy; Czech Academy of Sciences, Biology Centre, Institute of Plant Molecular Biology, Branisovska 1760, 370 05 Ceske Budejovice, Czech Republic |
| contact email | alessandro.agostini.1@unipd.it |
| lab head | |
| Peter Konik | |
| contact affiliation | University of South Bohemia, Ceske Budejovice |
| contact email | konik@prf.jcu.cz |
| dataset submitter | |
Full Dataset Link List
| MassIVE dataset URI |
| Dataset FTP location NOTE: Most web browsers have now discontinued native support for FTP access within the browser window. But you can usually install another FTP app (we recommend FileZilla) and configure your browser to launch the external application when you click on this FTP link. Or otherwise, launch an app that supports FTP (like FileZilla) and use this address: ftp://massive.ucsd.edu/v08/MSV000096023/ |
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