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Change in peptides

Conformation and stability of thiopeptides (formed by replacing the amide oxygen atom with a sp2 sulfur atom) have been investigated by calculations. It has been confirmed that insertion of a thioamide linkage into a peptide structure is not conformationally neutral. It is predicted to be more rigid than peptide and produces substantial changes in peptide structure, primarily in the residues on the C-terminal side of the thioamide.78 80... [Pg.160]

Sarnecka-Keller (SI), by use of Bondzynski s method modified by Gawinski, isolated from normal urine a well-defined peptide fraction easily reproducible without change of qualitative composition. Throughout the isolation procedure all factors which may have caused any changes in peptide structure were taken into account. The isolated preparation was substantially similar in general properties to that obtained originally by Bondzynski et al. (B7). [Pg.140]

Vigano, C., Manciu, L., Buyse, F., Goormaghtigh, E., Ruysschaert, J.M. (2000). Attenuated total reflection IR spectroscopy as a tool to investigate the structure, orientation and tertiary structure changes in peptides and membrane proteins. Biopolymers, 55(5), 373-380. [Pg.178]

Fig. 6. Solvent-induced conformational changes in peptide 7 [9]. The hydrophilic residues are in bold face. On the left, the tr-helix axial projection on the right, the 0-sheet side-view representation... Fig. 6. Solvent-induced conformational changes in peptide 7 [9]. The hydrophilic residues are in bold face. On the left, the tr-helix axial projection on the right, the 0-sheet side-view representation...
Singh, A. and Ganguli, N. C. (1972). Changes in peptides and amino acids in cheese during ripening. Milchwissenschaft 27, 412-416. [Pg.211]

A later study using the same data set of 20 peptides showed that similar results could be obtained using a set of three descriptors, z values, based on an earlier analysis of changes in peptide properties due to amino acid substitutions. These were found using principal component analysis (75) of the effects of... [Pg.136]

Jonas, M., Blechert, S., and Steckhan, E. (2001) Photochemically induced electron transfer (PET) catalyzed radical cyclization A practical method for inducing structural changes in peptides by formation of cyclic amino acid derivatives. Journal of Organic Chemistry, 66, 6896-6904. [Pg.285]

R571 C. Vigano, L. Manciu, F. Buyse, E, Goormaghtigh and J.-M. Ruysschaert, Attenuated Total Reflection IR Spectroscopy as a Tool to Investigate the Structure, Orientation and Tertiary Structure Changes in Peptides and Membrane Proteins , Biopolymers, 2001, 55, 373... [Pg.39]

Breuel, K., Braun, K., Dauth, C. and Groger, D. (1982) Qualitative changes in peptide alkaloid biosynthesis of Claviceps purpurea by environmental conditions. Planta Medica, 44,121-122. [Pg.353]

The Effect of Hydrogen Ion Concentration on the Free Energy Change in Peptide Formation... [Pg.178]

Over the past 30 years, realistic atomic-level mathematical models of proteins have been developed and tested. It is now possible to analyze the energetics of conformational changes in peptides and proteins with the accuracy required to answer quantitative questions regarding the nature of short-time protein dynamics and the extent of fluctuations in a protein near its native folded state. [Pg.2185]

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See also in sourсe #XX -- [ Pg.167 , Pg.169 ]



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