Archaeal membrane structure. Adapted from <a rel="nofollow" class="external autonumber" href="http://www.ucmp.berkeley.edu/archaea/archaeamm.html">[1]</a>. <b>Up</b>: archaeal membrane, 1-isoprene sidechain, 2-ether linkage, 3-L-glycerol, 4-phosphate moieties. <b>Medium</b>: bacterial and eukaryan membrane: 5-fatty acid, 6-ester linkage, 7-D-glycerol, 8-phosphate moieties. <b>Bottom</b>: 9-lipid bilayer in bacteria, eukarya and most archaea, 10-lipid monolayer in some archaea.
<a href="//commons.wikimedia.org/wiki/User:Franciscosp2" title="User:Franciscosp2">Franciscosp2</a>
self-made (using <a rel="nofollow" class="external text" href="http://www.xfig.org">xfig</a>)