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Formate Dehydrogenase: From NAD(P)H Regeneration to Targeting Pathogen Biofilms, Composing Highly Efficient Hybrid Biocatalysts and Atmospheric CO2 Fixation 甲酸脱氢酶:从NAD(P)H再生到靶向病原体生物膜，组成高效杂交生物催化剂和大气CO2固定
IF 0.7
Moscow University Chemistry Bulletin Pub Date : 2023-08-17 DOI: 10.3103/S0027131423040077
V. I. Tishkov, A. A. Pometun, S. S. Savin
{"title":"Formate Dehydrogenase: From NAD(P)H Regeneration to Targeting Pathogen Biofilms, Composing Highly Efficient Hybrid Biocatalysts and Atmospheric CO2 Fixation","authors":"V. I. Tishkov,&nbsp;A. A. Pometun,&nbsp;S. S. Savin","doi":"10.3103/S0027131423040077","DOIUrl":"10.3103/S0027131423040077","url":null,"abstract":"<p>NAD(P)<sup>+</sup>-dependent formate dehydrogenase (EC 1.2.1.2, FDH) catalyzes the simplest reaction from chemical and biological points of view, oxidation of formate-ion to carbon dioxide coupled to NAD(P)<sup>+</sup> reduction to yield NAD(P)H. Advances in the life sciences have shown that this reaction plays an extremely important role in a wide variety of organisms. The areas and types of practical applications of FDH are also permanently expanding. The review analyzes the key steps in the development of our knowledge on the role of formate dehydrogenase in living systems. Achievements in creation of highly efficient catalysts based on FDH for classic biotechnology as well as for new areas are also considered. The importance of a correct selection of the starting FDH form for the purpose of a biocatalyst design with required properties with minimal costs is demonstrated. The prospects for the use of FDH for CO<sub>2</sub> fixation of CO<sub>2</sub> are discussed.</p>","PeriodicalId":709,"journal":{"name":"Moscow University Chemistry Bulletin","volume":"78 4","pages":"151 - 169"},"PeriodicalIF":0.7,"publicationDate":"2023-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4671281","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Solubility of Ketoconazole in Ethylene Glycol + Water Mixtures at Different Temperatures 不同温度下酮康唑在乙二醇+水混合物中的溶解度
IF 0.7
Moscow University Chemistry Bulletin Pub Date : 2023-06-07 DOI: 10.3103/S0027131423030094
Homa Rezaei, Abolghasem Jouyban, Fleming Martinez, Elaheh Rahimpour
{"title":"Solubility of Ketoconazole in Ethylene Glycol + Water Mixtures at Different Temperatures","authors":"Homa Rezaei,&nbsp;Abolghasem Jouyban,&nbsp;Fleming Martinez,&nbsp;Elaheh Rahimpour","doi":"10.3103/S0027131423030094","DOIUrl":"10.3103/S0027131423030094","url":null,"abstract":"<p>Solubility profile of ketoconazole in the aqueous binary mixtures of ethylene glycol is measured by a shake-flask method at 293.2–313.2 K and mathematically represented by some cosolvency models (e.g. van’t Hoff, the λ<i>h</i> equation, the Yalkowsky, the Jouyban–Acree, and the Jouyban–Acree–van’t Hoff models) and the models’ performances are illustrated by mean relative deviations. The density values of ketoconazole saturated solutions are also determined and represented by Jouyban–Acree model.</p>","PeriodicalId":709,"journal":{"name":"Moscow University Chemistry Bulletin","volume":"78 3","pages":"145 - 149"},"PeriodicalIF":0.7,"publicationDate":"2023-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4308913","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Phototransformations of 1,3-Butadiene Diepoxide Radical Cations in CF3CCl3 at 77 K 77 K时1,3-二氧化丁二烯自由基阳离子在CF3CCl3中的光转化
IF 0.7
Moscow University Chemistry Bulletin Pub Date : 2023-06-07 DOI: 10.3103/S0027131423030082
D. A. Pomogailo, O. I. Gromov, V. I. Pergushov, I. D. Sorokin, M. Ya. Melnikov
{"title":"Phototransformations of 1,3-Butadiene Diepoxide Radical Cations in CF3CCl3 at 77 K","authors":"D. A. Pomogailo,&nbsp;O. I. Gromov,&nbsp;V. I. Pergushov,&nbsp;I. D. Sorokin,&nbsp;M. Ya. Melnikov","doi":"10.3103/S0027131423030082","DOIUrl":"10.3103/S0027131423030082","url":null,"abstract":"<p>The nature of radical cations stabilized in irradiated frozen 1,3-butadiene diepoxide/CF<sub>3</sub>CCl<sub>3</sub> solutions was determined <i>via</i> low-temperature UV/Vis spectroscopy, electron paramagnetic resonance spectroscopy, and quantum chemistry. It was found that the cyclic radical cations yielded as radiolysis products undergo C–C bond cleavage in both oxirane cycles under the action of light with further elimination of molecular formaldehyde resulting in distonic <sup>•</sup>CH<sub>2</sub>OC<sup>+</sup>CH<sub>2</sub> radical cations.</p>","PeriodicalId":709,"journal":{"name":"Moscow University Chemistry Bulletin","volume":"78 3","pages":"114 - 117"},"PeriodicalIF":0.7,"publicationDate":"2023-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4305043","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Atomic Force Microscopy of Antibacterial Coatings Produced from Polycation and Its Water-Soluble Complex with Polyanion 聚阳离子及其水溶性聚阴离子络合物抗菌涂层的原子力显微镜研究
IF 0.7
Moscow University Chemistry Bulletin Pub Date : 2023-06-07 DOI: 10.3103/S0027131423030070
V. A. Pigareva, A. V. Bolshakova, A. V. Sybachin
{"title":"Atomic Force Microscopy of Antibacterial Coatings Produced from Polycation and Its Water-Soluble Complex with Polyanion","authors":"V. A. Pigareva,&nbsp;A. V. Bolshakova,&nbsp;A. V. Sybachin","doi":"10.3103/S0027131423030070","DOIUrl":"10.3103/S0027131423030070","url":null,"abstract":"<div><div><h3>\u0000 <b>Abstract</b>—</h3><p>In this work, the morphology and stability of coatings formed from polydimethyldiallylammonium chloride, as well as its complex with sodium polystyrenesulfonate, on the surface of glass and polycarbonate were studied. It has been established that the modification of a polycation with a polyanion makes it possible to increase the resistance of the formed coatings to wash-off with water, ensuring the creation of effective antibacterial coatings on various surfaces.</p></div></div>","PeriodicalId":709,"journal":{"name":"Moscow University Chemistry Bulletin","volume":"78 3","pages":"132 - 135"},"PeriodicalIF":0.7,"publicationDate":"2023-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4308898","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Comparison of the Properties of 3-Aminopropyl Silica with Different Nitrogen Content in HILIC Mode 不同含氮量的3-氨基丙基二氧化硅在HILIC模式下的性能比较
IF 0.7
Moscow University Chemistry Bulletin Pub Date : 2023-06-07 DOI: 10.3103/S0027131423030057
N. Yu. Chikurova, A. O. Shemiakina, D. S. Kryzhanovskaya, O. A. Shpigun, A. V. Chernobrovkina
{"title":"Comparison of the Properties of 3-Aminopropyl Silica with Different Nitrogen Content in HILIC Mode","authors":"N. Yu. Chikurova,&nbsp;A. O. Shemiakina,&nbsp;D. S. Kryzhanovskaya,&nbsp;O. A. Shpigun,&nbsp;A. V. Chernobrovkina","doi":"10.3103/S0027131423030057","DOIUrl":"10.3103/S0027131423030057","url":null,"abstract":"<p>Four amino phases representing 3-aminopropyl silica gel batches with different numbers of grafted functional groups are compared. To evaluate the chromatographic properties of the adsorbents, the Tanaka test for hydrophilic stationary phases is used and the retention of polar substances of various classes in the HILIC (hydrophilic) mode is studied. It is shown that even small changes in the nitrogen content between different batches of 3-aminopropyl silica gel have a significant effect on the retention of polar analytes. The hydrophilicity of a substrate is shown to have the greatest effect on its chromatographic behavior, and its evaluation using the Tanaka test is the basis for selecting a batch to separate specific classes of polar substances or for further modification to obtain new phases.</p>","PeriodicalId":709,"journal":{"name":"Moscow University Chemistry Bulletin","volume":"78 3","pages":"118 - 125"},"PeriodicalIF":0.7,"publicationDate":"2023-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4306582","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Complex Formation of Silver(I) with 1,2,3-Benzotriazole: Protonization Constants of 1,2,3-Benzotriazole 银(I)与1,2,3-苯并三唑络合物的形成:1,2,3-苯并三唑的质子化常数
IF 0.7
Moscow University Chemistry Bulletin Pub Date : 2023-06-07 DOI: 10.3103/S0027131423030100
A. S. Samadov, A. F. Stepnova, E. F. Faizullozoda, A. N. Kuzmenko, O. N. Plakhotnaya, A. V. Kuzin, K. J. Suyarov, K. Ya. Khuseinov
{"title":"Complex Formation of Silver(I) with 1,2,3-Benzotriazole: Protonization Constants of 1,2,3-Benzotriazole","authors":"A. S. Samadov,&nbsp;A. F. Stepnova,&nbsp;E. F. Faizullozoda,&nbsp;A. N. Kuzmenko,&nbsp;O. N. Plakhotnaya,&nbsp;A. V. Kuzin,&nbsp;K. J. Suyarov,&nbsp;K. Ya. Khuseinov","doi":"10.3103/S0027131423030100","DOIUrl":"10.3103/S0027131423030100","url":null,"abstract":"<p>The acid–base properties of 1,2,3-benzotriazole (Bta) at 25°C and <i>I</i> = 0.1 mol/L KCl are studied in an aqueous solution by the pH-metric method. It is found that in the strongly acidic region of the solution, one of the two nitrogen atoms of the pyridine type of the Bta triazole rings undergoes protonation, and at high pH values, hydrogen abstraction occurs from the NH fragment of the molecule. The obtained values of the protonization constants of 1,2,3-benzotriazole log <i>K</i><sub>1</sub> and log <i>K</i><sub>2</sub> are 8.27 and 0.65, respectively. Using the potential of a silver electrode, the equilibria of silver(I) complex formation with 1,2,3-benzotriazole are studied. The data obtained indicate that Ag<sup>+</sup> replaces the hydrogen ions of the ligand molecule and forms AgBta and <span>({text{AgBta}}_{2}^{ - })</span> complexes with the stability constants log β<sub>1</sub> = 8.50 (AgBta) and log β<sub>2</sub> = 12.65 (<span>({text{AgBta}}_{2}^{ - })</span>).</p>","PeriodicalId":709,"journal":{"name":"Moscow University Chemistry Bulletin","volume":"78 3","pages":"136 - 140"},"PeriodicalIF":0.7,"publicationDate":"2023-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4309168","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Groupoid of Intermolecular Contacts and its Fuzzy Cayley Graph 分子间接触群拟及其模糊Cayley图
IF 0.7
Moscow University Chemistry Bulletin Pub Date : 2023-06-07 DOI: 10.3103/S0027131423030033
A. M. Banaru, D. A. Banaru, S. M. Aksenov
{"title":"Groupoid of Intermolecular Contacts and its Fuzzy Cayley Graph","authors":"A. M. Banaru,&nbsp;D. A. Banaru,&nbsp;S. M. Aksenov","doi":"10.3103/S0027131423030033","DOIUrl":"10.3103/S0027131423030033","url":null,"abstract":"<p>This article defines a group of intermolecular contacts for a monosystemic molecular structure described by one of the crystallographic symmetry groups (space, subperiodic, point) in <i>n</i>-dimensional Euclidean space with unoccupied special positions. The definition of a monoid of contacts for a polysystemic molecular structure is given. Crisp and fuzzy Cayley graphs of groups and monoids of contacts are constructed. Some examples of crystal structures are considered.</p>","PeriodicalId":709,"journal":{"name":"Moscow University Chemistry Bulletin","volume":"78 3","pages":"103 - 113"},"PeriodicalIF":0.7,"publicationDate":"2023-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4309173","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Crucible Atomizer with the Function of Separating Matrix Components for Determination of Atomic Absorption of Elements in Solid Samples 具有分离基体组分功能的坩埚雾化器测定固体样品中元素的原子吸收
IF 0.7
Moscow University Chemistry Bulletin Pub Date : 2023-06-07 DOI: 10.3103/S0027131423030069
V. N. Oreshkin, G. I. Tsysin
{"title":"Crucible Atomizer with the Function of Separating Matrix Components for Determination of Atomic Absorption of Elements in Solid Samples","authors":"V. N. Oreshkin,&nbsp;G. I. Tsysin","doi":"10.3103/S0027131423030069","DOIUrl":"10.3103/S0027131423030069","url":null,"abstract":"<p>A design is proposed for a crucible electrothermal atomizer with a vertical arrangement of evaporation, condensation, and atomization zones in graphite cylindrical blocks with transverse heating. The heat treatment is carried out in such a cylindrical column: the evaporation of a solid sample evaporation and the condensation of vapors, and then the evaporation of the condensate into the atomization zone, in which vapors were filtered through the porous medium of the graphite filter into the analytical zone. The metrological characteristics of the determination of elements in solid organomineral samples are improved due to the separation of matrix components and the reduction of interference.</p>","PeriodicalId":709,"journal":{"name":"Moscow University Chemistry Bulletin","volume":"78 3","pages":"126 - 131"},"PeriodicalIF":0.7,"publicationDate":"2023-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4310288","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Nonlinear Effects in Erythrocyte Sedimentation Dynamics in Whole Blood and in Model Systems after Dilution with Solutions of Polymers (Dextrans). Blood as an Active Colloid 聚合物溶液(右旋糖酐)稀释后全血和模型系统中红细胞沉降动力学的非线性效应。血液是一种活性胶体
IF 0.7
Moscow University Chemistry Bulletin Pub Date : 2023-06-07 DOI: 10.3103/S0027131423030045
E. V. Buravleva, V. L. Voeikov, S. E. Kondakov
{"title":"Nonlinear Effects in Erythrocyte Sedimentation Dynamics in Whole Blood and in Model Systems after Dilution with Solutions of Polymers (Dextrans). Blood as an Active Colloid","authors":"E. V. Buravleva,&nbsp;V. L. Voeikov,&nbsp;S. E. Kondakov","doi":"10.3103/S0027131423030045","DOIUrl":"10.3103/S0027131423030045","url":null,"abstract":"<p>The dynamics of sedimentation of whole blood cells and erythrocyte mass during sequential dilution with dextran solutions in vitro has been studied. Nonmonotonic changes in the optical density of the border between erythrocytes deposited both in their own plasma and in model systems were revealed. Fluctuations in the average and instantaneous rates of the process recorded at the boundary of cell subsidence confirm the nonlinear and cooperative nature of erythrocyte sedimentation, which is associated with the formation and separation of phases between cellular, liquid and gaseous components of blood. The structural reorganization of this dynamic system can be modulated in various ways, for example, by adding dextran solutions used in clinical practice in the case of blood loss, for detoxification, treatment and prevention of thrombophlebitis and shock conditions. It has been shown that the macro- and microkinetics of the erythrocyte sedimentation process depends both on the degree of dilution of blood (or model systems) by dextrans and on their molecular weight. The results obtained are consistent with the phase hypothesis of the settling of blood cells as a biocolloid, and can also be used in clinical hemotransfusiology to select an individual dosage of infusion solutions.</p>","PeriodicalId":709,"journal":{"name":"Moscow University Chemistry Bulletin","volume":"78 3","pages":"141 - 144"},"PeriodicalIF":0.7,"publicationDate":"2023-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4305876","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
New Feed Enzyme Preparations for The Destruction of Nonstarch Polysaccharides and Phytates 用于破坏非淀粉多糖和植酸盐的新型饲料酶制剂
IF 0.7
Moscow University Chemistry Bulletin Pub Date : 2023-04-24 DOI: 10.3103/S0027131423020037
O. G. Korotkova, A. M. Rozhkova, V. Y. Kislitsin, O. A. Sinitsyna, Yu. A. Denisenko, M. A. Marochkina, I. N. Zorov, I. A. Shashkov, A. D. Satrutdinov, A. P. Sinitsyn
{"title":"New Feed Enzyme Preparations for The Destruction of Nonstarch Polysaccharides and Phytates","authors":"O. G. Korotkova,&nbsp;A. M. Rozhkova,&nbsp;V. Y. Kislitsin,&nbsp;O. A. Sinitsyna,&nbsp;Yu. A. Denisenko,&nbsp;M. A. Marochkina,&nbsp;I. N. Zorov,&nbsp;I. A. Shashkov,&nbsp;A. D. Satrutdinov,&nbsp;A. P. Sinitsyn","doi":"10.3103/S0027131423020037","DOIUrl":"10.3103/S0027131423020037","url":null,"abstract":"<p>New recombinant strains of <i>Penicillium verruculosum</i> with a high level of expression of homologous <i>endo</i>-β-1,4-glucanase II and heterologous phytase A of <i>A. niger</i>, as well as heterologous <i>endo</i>-1,4-β-xylanase E of <i>P. canescens</i> and phytase A of <i>A. niger</i>, are created. This allows us to obtain highly active feed enzyme preparations (EPs) capable of simultaneously significantly reducing the viscosity of nonstarch polysaccharides (NPSs), as well as increasing the bioavailability of phosphorus and minerals of grain-based feed and, thus, increasing the digestibility of nutrients of agricultural animal and poultry feed. Specific EP activities for specific substrates (xylan, β-glucan, and phytate) are studied and the qualitative and quantitative component composition of new EPs is determined. A recipient strain δnia D, into which heterologous <i>endo</i>-1,4-β-xylanase E of <i>P. canescens</i> is successfully cloned, is obtained based on a new enzyme preparation containing homologous <i>endo</i>-β-1,4-glucanase II and heterologous phytase A of <i>A. niger.</i> In this way, a promising producer of three target enzymes is obtained simultaneously.</p>","PeriodicalId":709,"journal":{"name":"Moscow University Chemistry Bulletin","volume":"78 2","pages":"63 - 68"},"PeriodicalIF":0.7,"publicationDate":"2023-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4920498","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
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