Structures of ether lipids of M. fermentans. Both MfEL (R=acyl) and lyso-MfEL (R=H) are mixtures of different molecular species with respect to the alkyl/alkenyl residues which are hexadecyl (a), (9Z)-octadec-9′-enyl (b), or (1Z)-alk-1′-enyl (c) [37].
