Intact membrane lipids of 'Candidatus Nitrosopumilus maritimus,' a cultivated representative of the cosmopolitan mesophilic group I crenarchaeota

A study was conducted to analyze the lipid composition of the mesophilic crenarchaeote isolated from 'Candidatus Nitrosopumilus maritimus' and examine both the core glycerol dialkyl glycerol tetraethers (GDGT) lipid composition and the intact polar lipid composition. The results revealed that the GDGTs are composed of hexose, dihexose, and/or phosphohexose head groups.