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Transfer Gibbs Energies of Atp in Aqueous Mixtures of Non-ionic Glycerol and Urea and Ionic Nano3
| Content Provider | Semantic Scholar |
|---|---|
| Author | Sinha, Rangana Kundu, Kiron K. |
| Copyright Year | 1998 |
| Abstract | Transfer Gibbs energies (~CC\) of a nucleotide like adenosine 5'-triphosphate (ATP) have been determined in aqueous mixtures of non-electrolytes like glycerol (GL) and urea (UH) and electrolyte like NaN03 by measuring the solubility of sparingly soluble di-silver salts of ATP2at 25°C by spectrophotometry. The required ~CO, (Ag") values in NaN03 being known, the same for aqueous mixtures of GL and UH have also been determined by measuring the solubilities of AgPi (Pi= picrate) as ~CO,(Pi) values based on TATB reference electrolyte method are already known for the solvents. The observed ~CC'.,ch(ATP2-) values, obtained by subtracting the relevant electrostatic effect, indicate that while ATp2ion gets increasingly stabilized in aqueous UH and less so in aqueous GL but gets fairly destabilized in aqueous NaNO,. This reflects that as observed earlier in the cases of nucleic acid bases and nucleosides, the high valent salt solutions unlike aqueous UH and GL are likely to reinforce the stability of H-bonding of base pairs connecting ATP molecules in the double stranded DNAIRNA helices, as compared to that in water/intracellular fluids. |
| Starting Page | 789 |
| Ending Page | 794 |
| Page Count | 6 |
| File Format | PDF HTM / HTML |
| Volume Number | 37 |
| Alternate Webpage(s) | http://nopr.niscair.res.in/bitstream/123456789/40262/1/IJCA%2037A(9)%20789-794.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
