Microbial heliorhodopsins are a new type of rhodopsins, currently believed to engage in light sensing, with an opposite membrane topology compared to type-1 and type-2 rhodopsins. We determined heliorhodopsins presence/absence is monoderms and diderms representatives from the Tara Oceans and freshwater metagenomes as well as metagenome assembled genome collections. Heliorhodopsins are absent in diderms, confirming our previous observations in cultured Proteobacteria. We do not rule out the possibility that heliorhodopsins serve as light sensors. However, this does not easily explain their absence from diderms. Based on these observations, we speculate on the putative role of heliorhodopsins in light-driven transport of amphiphilic molecules.

• MeSH
• biologické modely MeSH
• gramnegativní bakterie klasifikace   genetika   MeSH
• metagenom MeSH
• mořská voda mikrobiologie   virologie   MeSH
• oceány a moře MeSH
• otevřené čtecí rámce MeSH
• senzorické rhodopsiny genetika   metabolismus   MeSH
• sladká voda mikrobiologie   virologie   MeSH
• Publikační typ
• časopisecké články MeSH
• práce podpořená grantem MeSH
• Geografické názvy
• oceány a moře MeSH