Revisiting biocrystallization: purine crystalline inclusions are widespread in eukaryotes
Jazyk angličtina Země Anglie, Velká Británie Médium print-electronic
Typ dokumentu časopisecké články, práce podpořená grantem
Grantová podpora
796217
Grantová Agentura, Univerzita Karlova (Charles University Grant Agency)
20-16549Y
Grantová Agentura České Republiky (Grant Agency of the Czech Republic)
19-19297S
Grantová Agentura České Republiky (Grant Agency of the Czech Republic)
17-06264S
Grantová Agentura České Republiky (Grant Agency of the Czech Republic)
PubMed
35672454
PubMed Central
PMC9381591
DOI
10.1038/s41396-022-01264-1
PII: 10.1038/s41396-022-01264-1
Knihovny.cz E-zdroje
- MeSH
- biomineralizace * MeSH
- Eukaryota * genetika metabolismus MeSH
- guanin metabolismus MeSH
- lidé MeSH
- puriny metabolismus MeSH
- Check Tag
- lidé MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- Názvy látek
- guanin MeSH
- purine MeSH Prohlížeč
- puriny MeSH
Despite the widespread occurrence of intracellular crystalline inclusions in unicellular eukaryotes, scant attention has been paid to their composition, functions, and evolutionary origins. Using Raman microscopy, we examined >200 species from all major eukaryotic supergroups. We detected cellular crystalline inclusions in 77% species out of which 80% is composed of purines, such as anhydrous guanine (62%), guanine monohydrate (2%), uric acid (12%) and xanthine (4%). Our findings shifts the paradigm assuming predominance of calcite and oxalates. Purine crystals emerge in microorganisms in all habitats, e.g., in freshwater algae, endosymbionts of reef-building corals, deadly parasites, anaerobes in termite guts, or slime molds. Hence, purine biocrystallization is a general and ancestral eukaryotic process likely present in the last eukaryotic common ancestor (LECA) and here we propose two proteins omnipresent in eukaryotes that are likely in charge of their metabolism: hypoxanthine-guanine phosphoribosyl transferase and equilibrative nucleoside transporter. Purine crystalline inclusions are multifunctional structures representing high-capacity and rapid-turnover reserves of nitrogen and optically active elements, e.g., used in light sensing. Thus, we anticipate our work to be a starting point for further studies spanning from cell biology to global ecology, with potential applications in biotechnologies, bio-optics, or in human medicine.
Department of Zoology Faculty of Science Charles University Prague 2 Czech Republic
Institute of Parasitology Czech Academy of Sciences České Budějovice Czech Republic
Institute of Physics Faculty of Mathematics and Physics Charles University Prague 2 Czech Republic
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