منابع مشابه
Cation–π–cation interactions in structural biology
Biological structures are stabilized by a variety of noncovalent interactions, such as hydrogen bonds, π –stacking, salt bridges or hydrophobic interactions. Besides hydrogen bonds and π– stacking, cation–π interactions between aromatic rings and positively charged groups have emerged as one of the most important interactions in structural biology. Although the role and energetic characteristic...
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It has been possible to treat potassium, rubidium, and cesium ion entry into frog sartorius muscle by the use of a model which assumes a limited number of sites at the cell surface. The ion concentration in an outer surface layer is regarded as the main factor determining the rate of inward movement. It is supposed that the concentration of ions in the external solution is effective in promotin...
متن کاملCooperative and Diminutive Interplay between Halogen, Hydride and Cation-σ Interactions
In the present study, the cooperative and diminutive interplay between halogen, hydride, and cation-σ interactions are studied in HMgH···Li+(Na+)···NCCl, Li+(Na+)···HMgH···ClCN and HMgH···ClCN···Li+(Na+) complexes by means of ab initio calculations. To better understand the cooperative or diminutive effects in the ternar...
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The papillomaviruses constitute a large family of viruses that cause benign tumors (warts) in their hosts. In recent years, these viruses have been found to have substantial clinical importance (Syrjanen et al. 1987; zur Hausen 1991). The replication properties of papillomaviruses have been studied for a number of years; however, many results obtained in the early studies concerning both trans-...
متن کاملNature of Lithium Interactions with DNA Nucleobases: Theoretical Study
In the present study, the interactions of three different lithium species Li+, Li3+ and CH3Li with several different sites of the most stable tautomers of DNA nucleo-bases are presented. This investigation is based on the results of thermochemical properties, Quantum Theory of Atoms in Molecules (QTAIM) and Natural Bond Orbi...
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ژورنال
عنوان ژورنال: Chemistry & Biology
سال: 2002
ISSN: 1074-5521
DOI: 10.1016/s1074-5521(02)00116-3