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AMBIENTUM BIOETHICA BIOLOGIA CHEMIA DIGITALIA DRAMATICA EDUCATIO ARTIS GYMNAST. ENGINEERING EPHEMERIDES EUROPAEA GEOGRAPHIA GEOLOGIA HISTORIA HISTORIA ARTIUM INFORMATICA IURISPRUDENTIA MATHEMATICA MUSICA NEGOTIA OECONOMICA PHILOLOGIA PHILOSOPHIA PHYSICA POLITICA PSYCHOLOGIA-PAEDAGOGIA SOCIOLOGIA THEOLOGIA CATHOLICA THEOLOGIA CATHOLICA LATIN THEOLOGIA GR.-CATH. VARAD THEOLOGIA ORTHODOXA THEOLOGIA REF. TRANSYLVAN
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The STUDIA UNIVERSITATIS BABEŞ-BOLYAI issue article summary The summary of the selected article appears at the bottom of the page. In order to get back to the contents of the issue this article belongs to you have to access the link from the title. In order to see all the articles of the archive which have as author/co-author one of the authors mentioned below, you have to access the link from the author's name. |
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STUDIA BIOLOGIA - Issue no. Sp. issue / 2015 | |||||||
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THE ROLE OF DIFFERENT POSITIVELY AND NEGATIVELY CHARGED IONS ON THE STABILITY OF THE HISTONE NUCLEOSOME CORE PARTICLE. Authors: ATTILA BENDE. |
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Abstract: VIEW PDF: THE ROLE OF DIFFERENT POSITIVELY AND NEGATIVELY CHARGED IONS ON THE STABILITY OF THE HISTONE NUCLEOSOME CORE PARTICLE The role of different positively (Na+ , K+ , Mg2+ ) and negatively (Cl‾) charged ions on the interaction between the negatively charged PO4‾ group of DNA and the positively charged histone protein side chains of lysine and arginine amino acids have been investigated using ab initio quantum chemical methods. The analysis of the intermolecular interaction have shown that the positively charged ions polarize the negative charges on the PO4‾ group which weaken the electrostatic interaction between the negative side of the DNA and the positive part of the histone protein. Similarly, the negatively charged Cl‾ ion can drastically change the charge distribution on the positively charged lysine or arginine amino acids and again weaken the electrostatic interaction between the negative side of the DNA and the positive part of the histone protein. Keywords: Ab initio methods, DNA, histone, ions, nucleosome
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