Rhodobacter capsulatus. lipid

Fig. 7.—Chemical structure of lipid A of Rhodobacter capsulatus. Dashed lines indicate nonstoichiometric substitution. The anomeric a configuration of phosphates and the configuration (Zor ) of the double bond in A5-12 1 are assigned only tentatively (89). For substituents of the phosphates see Table I. 

Fig. 3.3 Infrared spectra with attenuated total reflectance using polarized light for lipid A from E.coli and from Rhodobacter capsulatus. The two lipid A have identical backbone structures, but differences in the acylation pattern. As can be seen, the vibrational bands corresponding to diglucosamine ring vibrations have different dichroic ratios, which is indicative for a different inclination of the backbones with respect to the membrane normal...

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