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Distribution of conformational energy minima in model heteropolymers

โœ Scribed by Gustavo A. Arteca

Publisher
Elsevier Science
Year
1995
Tongue
English
Weight
506 KB
Volume
244
Category
Article
ISSN
0009-2614

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โœฆ Synopsis

As an approach to explain the distribution of conformational minima in medium-size polymers and oligopeptides, we derive the exact density of states of a rotational-isomeric model of a heteropolymer. The model considers a finite molecular chain with a variable number of torsions, each of which may give rise to a different number of rotamers and conformational energies. The density of states is computed from combinatorial generating functions and then compared with that of homopolymers. By using a statistical approach of 'mixed chains', we build effective distributions of minima that exhibit the same qualitative features found in realistic conformational analyses.

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