Poly-y-benzyl-L-glutamate PBG

Fig. 2. Graphical treatment of dispersion data in Fig. 1 according to the simple Drude equation (11). The disordered forms of the synthetic polypeptides, poly-y-benzyl-L-glutamate (PBG, O — O) and poly-n-glutamio acid (PGA, A — A), give linear plots, which specify their dispersions as simple. The dispersions of bovine serum albumin (BSA) in both its native ( ---- ) and denatured ( — ) forms are...

Now let US compare the theoretical concepts elaborated in the present section with the experimental data obtained for the three best studied rigid-chain polymers poly-y-benzyl-L-glutamate (PBG), poly-p-phenylene terephthalamide... 

The overwhelming majority of studies of the cholesteric mesophase in polypeptides, beginning wiA the first ones [1, 2], were conducted with poly-y-benzyl-L-glutamate (PBG-L), and poly-L-glutamic acid and some of its otha-derivatives were only included in LC objects later [12]. 

The elastic constant ATjj differs insignificantly for monomers and polymers in the LC state (presence of differences with the predictions of the theory). On the other hand, constants and Ky can increase shaiply with an increase in the concentration and are essentially dependent on the nature of the solvent [65]. In going from dioxane to dichloromethane, Kyi for anisotropic solutions of poly-Y-benzyl-L-glutamate (PBG) increases from 6.2 10 to 5.4 10 dyne. 

Second virial coefficient of poly( Y-benzyl-l-glutamate) (azo-bridge between two PBG-chains) 1... 

Poly(Y benzyl glutamate) (PBG) is a synthetic polypeptide which adopts the a-helical conformation in various organic solvents. Its essentially rod-like shape is responsible for the formation of a liquid crystalline phase above a critical concentration of polymer (l 2). The nature of this mesophase is usually cholesteric due to the chirality of the PBG molecules but... 

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