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Effect of side‐chain disorder on the electronic structure of proteins
Author(s) -
Suhai Sándor,
Kaspar Johannes,
Ladik János
Publication year - 1980
Publication title -
international journal of quantum chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.484
H-Index - 105
eISSN - 1097-461X
pISSN - 0020-7608
DOI - 10.1002/qua.560170514
Subject(s) - side chain , valence (chemistry) , chemistry , chemical physics , electronic structure , polymer , conduction band , thermal conduction , crystallography , computational chemistry , materials science , physics , organic chemistry , quantum mechanics , composite material , electron
The influence of side‐chain disorder on the electronic structure of proteins has been investigated in the case of polypeptides containing two or three different amino acid residues. It has been found that due to the different potentials of different side‐chain groups, the original valence and conduction bands of the homopolypeptides are split into narrow bands. The comparison of the densities of electronic states in simple homopolypeptides and in composite polymers shows that new forbidden regions in the energy spectrum of proteins may develop. The consequences of these effects for the semiconductive properties of proteins are discussed.