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Poly-L-serine

Zhou, Q. X., and Kohn, J., Preparation of poly(L-serine ester) A structural analog of conventional poly-L-serine, Macromole-cules. In Press. [Pg.227]

Scheme 18 Synthesis of water-soluble EG-grafted poly(L -serine)s... Scheme 18 Synthesis of water-soluble EG-grafted poly(L -serine)s...
Water-soluble random copolymers containing L-serine and A/5-(4-hydroxybutyl)-L-glutamine are prepared, and the thermally induced helix-coil transition of these copolymers in water is studied. The Z/mm-Bragg parameters cr and s for the (hypothetical) helix-coil transition in poly(l-serine) in water are deduced. The values of s, computed from both the Lifson and Allegra theories are (.Llfson, o-1 x 10-4 / Allegra, o = 7.5 x 10 5 s - 0.667/0.726 (273 K), 0.757/0.784 (293 K), 0.777/0.792 (313 K), 0.731/0.744 (333 K),... [Pg.432]

Besides the above examples, the influence of dipole-dipole interactions between polar side chains (containing a heteroatom in the y position) and backbone amide groups has been shown for polymers such as poly-L-serine (Birshtein and Ptitsyn, 1967). In such eases, the jS-strueture is energetically more favored than the a-helix. [Pg.168]

The anionic polymerization of A(-benzyloxycarbonyl-L-serine 3-lactone leads to poly(A -acyl-L-serine ester) My, = ca. 40 000), from which poly(L-serine ester hydrochloride) can be obtained by hydrogenation. ... [Pg.69]

Figure 23. Simultaneous resolution of circular dichroism (A) and absorption (B) curves of poly-L-serine in the antiparallel -pleated sheet conformation. The critical values for the resolved bands are included in Table 2B. Reproduced, with permission, from [73],... Figure 23. Simultaneous resolution of circular dichroism (A) and absorption (B) curves of poly-L-serine in the antiparallel -pleated sheet conformation. The critical values for the resolved bands are included in Table 2B. Reproduced, with permission, from [73],...
Zhou, Q.X. and Kohn,J. (1990) Preparation of poly(L-serine ester) Astmctural analogue of conventional poly(Ij-serine). Macromolecules, 23, 3399-3406. [Pg.279]

Fig. 20 O Is, N Is, and C Is peaks of maltodextrin and poly(L -serine) [SSX 100/206 spectrometer, monochromatized AIko, pass energy 50eV, Gaussian/Lorentzian ratio 85/15], and type I collagen and dipalmitoyl phosphatidylcholine (DPPC) [Kratos Axis Ultra spectrometer, monochromatized AIro, pass energy 40 eV, Gaussian/Lorentzian ratio 70/30]... Fig. 20 O Is, N Is, and C Is peaks of maltodextrin and poly(L -serine) [SSX 100/206 spectrometer, monochromatized AIko, pass energy 50eV, Gaussian/Lorentzian ratio 85/15], and type I collagen and dipalmitoyl phosphatidylcholine (DPPC) [Kratos Axis Ultra spectrometer, monochromatized AIro, pass energy 40 eV, Gaussian/Lorentzian ratio 70/30]...
The following examples illustrate the need to be critical in performing peak decomposition, even regarding the number of components per peak. The C Is peak of maltodextrin and poly(L-serine) in Fig. 20 shows clearly a component, which is due to C—(C, H) of surface contaminants and has been set at 284.8 eV. If the structural... [Pg.219]

Poly(L-serine) Polyserine 25821-52-7 L-Serine, homopolymer R (C3H7N03) ... [Pg.2294]

See other pages where Poly-L-serine is mentioned: [Pg.200]    [Pg.19]    [Pg.17]    [Pg.445]    [Pg.287]    [Pg.98]    [Pg.29]    [Pg.443]    [Pg.458]    [Pg.460]    [Pg.1110]    [Pg.307]    [Pg.81]    [Pg.788]    [Pg.869]    [Pg.125]    [Pg.150]    [Pg.8424]    [Pg.627]    [Pg.409]    [Pg.409]    [Pg.410]    [Pg.411]    [Pg.412]    [Pg.413]    [Pg.414]    [Pg.415]    [Pg.456]    [Pg.84]    [Pg.214]    [Pg.219]    [Pg.1193]    [Pg.906]    [Pg.2208]   
See also in sourсe #XX -- [ Pg.307 ]



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