Argentina
| info:eu-repo/semantics/article
Insufficiently dehydrated hydrogen bonds as determinants of protein interactions
Fecha
2003-01-07Registro en:
Fernandez, Ariel; Scheraga, Harold A.; Insufficiently dehydrated hydrogen bonds as determinants of protein interactions; National Academy of Sciences; Proceedings of the National Academy of Sciences of The United States of America; 100; 1; 7-1-2003; 113-118
0027-8424
1091-6490
CONICET Digital
CONICET
Autor
Fernandez, Ariel
Scheraga, Harold A.
Resumen
The prediction of binding sites and the understanding of interfaces associated with protein complexation remains an open problem in molecular biophysics. This work shows that a crucial factor in predicting and rationalizing protein-protein interfaces can be inferred by assessing the extent of intramolecular desolvation of backbone hydrogen bonds in monomeric structures. Our statistical analysis of native structures shows that, in the majority of soluble proteins, most backbone hydrogen bonds are thoroughly wrapped intramolecularly by nonpolar groups except for a few ones. These latter underwrapped hydrogen bonds may be dramatically stabilized by removal of water. This fact implies that packing defects are "sticky" in a way that decisively contributes to determining the binding sites for proteins, as an examination of numerous complexes demonstrates.