On Physical Properties of Tetraether Lipid Membranes: Effects of Cyclopentane Rings

Figure 3

Structures of cyclopentane ring containing GDGTs previously reported to exist in archaea [7]. The number of cyclopentane rings in the first and second hydrocarbon chains is indicated in the parentheses. The mass-to-charge ratio (m/z) of the protonated form [M+H]⁺ for each structure is also listed.