Glutamic acid with detergents

Peculiar DNA architecture was demonstrated in 25% aqueous ethanol when DNA was complexed with series of cationic detergents in the presence of poly(glutamic acid) [124]. Electron microscopy and x-ray scattering demonstrated that DNA can pack cetyltrimethylammonium bromide molecules into rodlike micelles, which form a hexagonal lattice. Interestingly, circular dichroism spectroscopy revealed that in these complexes DNA adopts left-handed conformation. 

Similar calculations have been Initiated to ascertain the relative midpoints of the two bacterlochlorophylls (Bh and Bl) and the two bacteriopheophytins (Hl and Hm)- The assumptions used were the same as those outlined above for the cytochrome calculations, except that glutamic acid L104 is uncharged. It has been found that this residue can be replaced with non-polar amino acids without loss of function (30). These calculations suggest that the L side is only very slightly easier to reduce than the M branch, the differences between Bl and Bm and between Hl and Hm are less than 60 meV. Similar results were found when the protein was assumed be surrounded by water or by a low dieletric, such as a membrane. RC function with little change in the native membrane, solubilized with detergent or even suspended in hexane (31). 

Many synthesis patents and publications for polyaspartic acids from aspartic acid [119-124] and ammonia/maleic [125, 126] processes have issued, and the products find use in many applications including dispersants [127, 128] and detergents [129,130]. BASF has an aspartic acid copolymer patent with carbohydrates and polyols [131], and Procter Gamble [132] has a patent for poly(glutamic acid), both for biodegradable detergent co-builders. 

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