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Circular dichroism studies of Cu2+-ATP complexes. Existence of ribose-metal ion interactions

โœ Scribed by M. Gabriel; D. Larcher; C. Thirion; J. Torreilles; A. Crastes de Paulet

Book ID
104139136
Publisher
Elsevier Science
Year
1977
Tongue
English
Weight
346 KB
Volume
24
Category
Article
ISSN
0020-1693

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โœฆ Synopsis

The interactions of Cu" with the ribose moiety of ATP are studied by Circular Dichroism to understand the formation of hydroxocomplexes in the alkaline pH range. When the pH is basic, we observed two different kinds of CD spectra only for the ribonucleotides and not for dATP. These characteristic CD spectra correspond to two distinct complexes for which the 2' and 3' hydroxyls are respectively ionised.

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โœ V. Andrushchenko; J. H. Van De Sande; H. Wieser ๐Ÿ“‚ Article ๐Ÿ“… 2003 ๐Ÿ› Wiley (John Wiley & Sons) ๐ŸŒ English โš– 627 KB

## Abstract Vibrational circular dichroism (VCD) spectroscopy and simultaneous IR absorption measurements are applied to study the interaction of natural calf thymus DNA with Cu^2+^ ions at room temperature in a Cu^2+^ concentration range of 0โ€“0.4__M__ (a Cu^2+^/phosphate molar ratio [Cu]/[P] of 0โ€“