N. V. Penkov, N. A. Penkova, V. A. Zhmurin, A. G. Pogorelov
{"title":"Natural Submicron Heterogeneities in Aqueous Solutions of ATP","authors":"N. V. Penkov, N. A. Penkova, V. A. Zhmurin, A. G. Pogorelov","doi":"10.3103/S1541308X24700134","DOIUrl":null,"url":null,"abstract":"<p>Submicron heterogeneities (SMHs) spontaneously arising in aqueous solutions of adenosine triphosphate (ATP) are studied. Their size of about 100 nm is close to the size of SMHs earlier detected in other solutions. The SMHs have a ζ-potential of about –10 mV. It is one of their stability factors. It is shown that the tendency for ATP to form SMHs depends on the ionic composition. After removal of SMHs from the ATP solution by filtering they do not form for more than two hours in the presence of Ca<sup>2+</sup>, while when Ca<sup>2+</sup> is absent or replaced with Mg<sup>2+</sup>, the SMHs form in less than 30 min. In some cases, fast formation of SMHs hampers their adequate investigation. Analysis of dielectric spectra of ATP solutions in the presence of Ca<sup>2+</sup> before and after filering has shown that hydration of Ca·ATP complexes inside SMHs is manifested by lower binding of water molecules and smaller number of free water molecules as compared to hydration of Ca·ATP complexes not included in SMHs.</p>","PeriodicalId":732,"journal":{"name":"Physics of Wave Phenomena","volume":"32 3","pages":"178 - 186"},"PeriodicalIF":1.1000,"publicationDate":"2024-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Physics of Wave Phenomena","FirstCategoryId":"101","ListUrlMain":"https://link.springer.com/article/10.3103/S1541308X24700134","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"PHYSICS, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Submicron heterogeneities (SMHs) spontaneously arising in aqueous solutions of adenosine triphosphate (ATP) are studied. Their size of about 100 nm is close to the size of SMHs earlier detected in other solutions. The SMHs have a ζ-potential of about –10 mV. It is one of their stability factors. It is shown that the tendency for ATP to form SMHs depends on the ionic composition. After removal of SMHs from the ATP solution by filtering they do not form for more than two hours in the presence of Ca2+, while when Ca2+ is absent or replaced with Mg2+, the SMHs form in less than 30 min. In some cases, fast formation of SMHs hampers their adequate investigation. Analysis of dielectric spectra of ATP solutions in the presence of Ca2+ before and after filering has shown that hydration of Ca·ATP complexes inside SMHs is manifested by lower binding of water molecules and smaller number of free water molecules as compared to hydration of Ca·ATP complexes not included in SMHs.
期刊介绍：
Physics of Wave Phenomena publishes original contributions in general and nonlinear wave theory, original experimental results in optics, acoustics and radiophysics. The fields of physics represented in this journal include nonlinear optics, acoustics, and radiophysics; nonlinear effects of any nature including nonlinear dynamics and chaos; phase transitions including light- and sound-induced; laser physics; optical and other spectroscopies; new instruments, methods, and measurements of wave and oscillatory processes; remote sensing of waves in natural media; wave interactions in biophysics, econophysics and other cross-disciplinary areas.
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