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001-es BibID:	BIBFORM031404
035-os BibID:	WOS:000230822200016
Első szerző:	Fuxreiter Mónika (kutató vegyész)
Cím:	Interfacial Water as a "Hydration Fingerprint" in the Noncognate Complex of BamHI / Monika Fuxreiter, Mihaly Mezei, István Simon, Roman Osman
Dátum:	2005
ISSN:	0006-3495
Megjegyzések:	The molecular code of specific DNA recognition by proteins as a paradigm in molecular biology remains an unsolved puzzle primarily because of the subtle interplay between direct protein-DNA interaction and the indirect contribution from water and ions. Transformation of the nonspecific, low affinity complex to a specific, high affinity complex is accompanied by the release of interfacial water molecules. To provide insight into the conversion from the loose to the tight form, we characterized the structure and energetics of water at the protein-DNA interface of the BamHI complex with a noncognate sequence and in the specific complex. The fully hydrated models were produced with Grand Canonical Monte Carlo simulations. Proximity analysis shows that water distributions exhibit sequence dependent variations in both complexes and, in particular, in the noncognate complex they discriminate between the correct and the star site. Variations in water distributions control the number of water molecules released from a given sequence upon transformation from the loose to the tight complex as well as the local entropy contribution to the binding free energy. We propose that interfacial waters can serve as a "hydration fingerprint'' of a given DNA sequence.
Tárgyszavak:	Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban egyetemen (Magyarországon) készült közlemény
Megjelenés:	Biophysical Journal. - 89 : 2 (2005), p. 903-911. -
További szerzők:	Mezei Mihály Simon István Osman, Roman
Internet cím:	Intézményi repozitóriumban (DEA) tárolt változat DOI
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