{"title":"Extracellular Expression of Recombinant Kex2 Protease in Pichia pastoris BG10","authors":"","doi":"10.33263/briac134.360","DOIUrl":"https://doi.org/10.33263/briac134.360","url":null,"abstract":"Kex2 is a ~67 kD protease in yeast and fungi that specifically digest at -Lys-Arg- or -Arg-Arg-. Because of the same cleaving site, Kex2 is the potential to be applied in protein engineering, for instance, for protein purification. In the recent study, the Saccharomyces cerevisiae KEX2 gene was designed and constructed using pD902 and then integrated with the genome of Pichia pastoris BG10. Under AOX1 promoter control, Kex2 was expressed with methanol induction and found in extracellular fractions. The recombinant Kex2 was successfully confirmed with a western blot using a monoclonal anti-His-tag antibody and LC/MS/MS.","PeriodicalId":9026,"journal":{"name":"Biointerface Research in Applied Chemistry","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43986426","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}
{"title":"One-pot Hydrothermal Synthesis of Vanadium Dioxide Nanoparticles","authors":"","doi":"10.33263/briac134.361","DOIUrl":"https://doi.org/10.33263/briac134.361","url":null,"abstract":"Vanadium dioxide (VO2) shows excellent thermochromic properties suitable for potential application in optical devices and smart windows coating. VO2 is interesting since actual coating on glass materials is possible along with large-scale production. This paper, VO2 nanoparticles were synthesized successfully using the sol-gel-assisted hydrothermal method. The as-prepared VO2 nanoparticles were annealed under vacuum, and the crystal phase formation, composition, morphology, and metal-insulator phase transition properties of the nanoparticles were studied. X-ray Diffraction (XRD) spectra revealed that a purely monoclinic phase of VO2 nanoparticles with an average crystallite size of 33.27 nm was synthesized. Scanning Electron Microscopy (SEM) micrographs also confirmed the formation of crystalline VO2 nanoparticles. Differential Scanning Calorimetry (DSC) curve shows that the change in temperature (∆T_c) between the exothermic and endothermic peaks is 13ºC. Moreover, Fourier Transform Infrared (FTIR) spectroscopy peaks ascertain the presence of VO2 functional groups in the synthesized nanoparticles.","PeriodicalId":9026,"journal":{"name":"Biointerface Research in Applied Chemistry","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49472112","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}
{"title":"The Efficiency of Saccharomyces Cerevisiae as an Antifungal and Antimycotoxigenic Agent","authors":"","doi":"10.33263/briac134.354","DOIUrl":"https://doi.org/10.33263/briac134.354","url":null,"abstract":"Aflatoxins (AFs) and zearalenone (ZEN) are the most predominant mycotoxins in various food and feed. Therefore, this study aimed to estimate the antifungal activity of Saccharomyces cerevisiae strains and to study their ability to remove aflatoxin B1 (AFB1) and zearalenone (ZEN) in vitro. Data revealed that S. cerevisiae NRLL Y-12633 showed higher antifungal activity compared to S. cerevisiae NRRL Y-1089. On the other hand, S. cerevisiae suspension exhibited higher antifungal activity than S. cerevisiae supernatant. Concerning the removal of AFB1, results indicated that after 30 min. S. cerevisiae NRRL Y-1089 displayed a higher ability to remove AFB1 at a concentration of 5.0 µg/mL with a percentage of reduction reaching 87.20% than S. cerevisiae NRRL Y-12633, which removed 21.00%. As for the removal of ZEN, results showed that after 30 min. S. cerevisiae NRRL Y-12633 successfully removed ZEN at a concentration of 5.0 µg/mL by 94.80%, whereas S. cerevisiae NRRL Y-1089 removed ZEN by 91.80%. Results also indicated that the removal of AFB1 increased by increasing the incubation time, whereas the removal of ZEN decreased by increasing the incubation time. Therefore, it could be concluded that S. cerevisiae strains could be applied as an additive to decrease the concentration of mycotoxins in food and feed.","PeriodicalId":9026,"journal":{"name":"Biointerface Research in Applied Chemistry","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45354577","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}
{"title":"Uncovering the Anticancer Potential of Phytomedicine and Polyherbal’s Synergism against Cancer – A Review","authors":"","doi":"10.33263/briac134.356","DOIUrl":"https://doi.org/10.33263/briac134.356","url":null,"abstract":"Cancer is a dreadful disease; many researchers successfully aimed to find a strategy to successfully eliminate cancer with minimal side effects. Herbal medicine allows us to attain sickness relief while avoiding side effects. Several herbal compounds have been discovered to have an anti-cancer effect by inducing apoptosis, antioxidant activity, and inhibiting, activating cancer-causing, and suppressing genes and proteins. The existence of active phytochemicals that treat a variety of ailments contributes to medicinal plants' pharmacological efficacy. Since commonly used modern chemical treatments for cancer possess severe side effects, identifying an alternative treatment with fewer side effects and effective illness relief is critical. This review reveals that aromatic phytocompounds account for 90 percent of anti-cancer action with most terpenoids and phenolics. Each anti-cancer phytocompound works in a distinct way to stop cancer from spreading. Polyherbal formulations are more effective than single herbs at expressing anti-cancer and other activities because they can act on multiple targets simultaneously, have multiple mechanisms for a single ailment, inhibit disease resistance development and enhance treatment activity through synergism. When using synergic herbal substances in the right ratio, a polyherbal formulated medicine can be used as a commercial drug following successful clinical trials for cancer therapy.","PeriodicalId":9026,"journal":{"name":"Biointerface Research in Applied Chemistry","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43285453","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}
{"title":"Impact of Mutations in the SARS-CoV-2 Spike RBD Region of BA.1 and BA.2 Variants on its Interaction with ACE2 Receptor Protein","authors":"C. Das, V. S. Mattaparthi","doi":"10.33263/briac134.358","DOIUrl":"https://doi.org/10.33263/briac134.358","url":null,"abstract":"The COVID-19 pandemic started at the onset of 2020 and still thriving due to its continuous mutation and evolution into new strains. Omicron strain has been recently categorized as a variant of concern(VoC) by WHO and based on mutations, it is divided into BA.1 and BA.2. In this study, we compared the interaction profile of RBD of the spike protein of the BA.1 and BA.2 variant of SARS-CoV-2 with ACE2 receptor. From the molecular dynamics simulation study, we observed the spike protein of BA.1, and BA.2 variant utilizes unique strategies to have a stable binding with ACE2. The binding affinity of the spike protein of the BA.2 variant-ACE2 complex is indeed high (GBTOT=-23.87 kcal/mol) in comparison with the spike protein of BA.1 variant-ACE2 complex (GBTOT=5.38 kcal/mol). Stable binding of spike protein to ACE2 is essential for virus entry, and the interactions between them should be understood well for the treatment modalities.","PeriodicalId":9026,"journal":{"name":"Biointerface Research in Applied Chemistry","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41341433","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}
{"title":"Study of Thermodynamic Parameters for Nano Zinc Sulfate in the Presence of Proline (amino acid) in Mixed MeOH-H2O Solvents at Different Temperatures","authors":"","doi":"10.33263/briac134.359","DOIUrl":"https://doi.org/10.33263/briac134.359","url":null,"abstract":"A set of conductometric measurements were conducted using zinc sulfate (ZnSO4) with different percentages of methanol (MeOH) and water in the presence of Proline (ligand) at four temperatures. The present work aims to estimate diverse thermodynamic parameters for nano Zn (II) sulfate alone and with amino acid (H2Prol) to form complexes in the solutions. All the data for the used electrolytes and ions is very important for analyzing the salt and explaining the different ion-ion and ion-solvent interactions. The isolated metal complexes derived from the interaction of amino acids with Zn (II) are characterized by chemical and physical methods. Based on spectral data (IR, and UV-Vis), a structure for separated solid complexes is presented and magnetic studies. Furthermore, biological activity measurements are executed, which benefits in determining the factors impacting the thermodynamic parameters and physical properties of the formed complexes in the solution.","PeriodicalId":9026,"journal":{"name":"Biointerface Research in Applied Chemistry","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41762892","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}
{"title":"Computational Insights in the Spectrophotometrically Analyzed Niobium (V)- 3-Hydroxy-2-(4-methylphenyl)-4H-chromen-4-one Complex using DFT Method","authors":"","doi":"10.33263/briac134.357","DOIUrl":"https://doi.org/10.33263/briac134.357","url":null,"abstract":"Using 3-hydroxy-2-(4-methylphenyl)-4H-chromen-4-one (HMC) as a complexing agent in an acidic medium, a simple, quick, highly sensitive, and selective approach for the extractive spectrophotometric measurement of micro quantities of niobium (V) is developed. The yellowish 1:3 complex can be extracted 100 % in dichloromethane (DCM), attaining maximum absorbance in the wavelength range 388-407 nm. At 400 nm, the selected wavelength, the approach follows a linear calibration curve up to 2.2 g Nb (V) ml-1 and 0.395-1.78 ppm Nb (V) as identified from the Ringbom Plot with molar absorptivity, specific absorptivity, and Sandell's sensitivity of 4.926 × 104 l mol-1 cm-1, 0.5302 ml g-1 cm-1 and 0.0019 µg Nb cm-2, respectively. With a correlation coefficient of 0.9994, the linear regression equation is Y = 0.514 X + 0.016. The method's detection limit is 0.0698 µg ml-1. The presented determination of pentavalent niobium is unaffected by 33 cations and 22 anions/complexing agents. The approach has good reproducibility and can be used to determine niobium in a satisfactory manner. The analytical study has been correlated well with the theoretical approach of Density Functional Theory (DFT) for quantum chemical calculations. DFT effectively helped determine and interpret the chemical behavior of the obtained Nb(V)-HMC complex, explaining its stability and reactivity pattern.","PeriodicalId":9026,"journal":{"name":"Biointerface Research in Applied Chemistry","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44987108","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}
{"title":"Synthesis, Characterization and Electrochemical Detection of Glucose and H2O2, Molecular Docking and Biological Inspection of Transition Metal Complexes of Novel Ligand 2-[(5-methyl-1,3-benzoxazol-2-yl)sulfanyl]acetohydrazide","authors":"","doi":"10.33263/briac134.353","DOIUrl":"https://doi.org/10.33263/briac134.353","url":null,"abstract":"A renowned pharmacophore and structure of great relevance to various fields, benzoxazole is a prominent member of the heterocyclic family. Aside from that, metal complexes can enhance the drug action and efficacy of the organic therapeutic agent. These insights led us to conduct research, including synthesizing and characterizing benzoxazole-derived ligand and metal complexes, assessing their pharmacological properties, and the potential use of the metal complex as a biosensor for sensing glucose and H2O2. The novel ligand MBA and its transition metal complexes are synthesized and characterized for their geometrical composition by varied physical and spectroscopic procedures. Antimicrobial potency was measured by the well diffusion method and antioxidant levels by the DPPH technique. A molecular docking study and MTTtest were carried out to assess anticancer activity for MCF-7 and Hela cell lines. The study results show that MBA bear bidentate coordination and octahedral geometry are ideal for the coordination of metals. The Co(II)MBA/GCE sensor demonstrated astounding electrochemical activity for glucose, and H2O2 and Ni(II) and Cu(II) compounds had impressive antimicrobial and cytotoxic potency, whereas Co(II) and Ni(II) complex were stronger antioxidant agents.","PeriodicalId":9026,"journal":{"name":"Biointerface Research in Applied Chemistry","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48458877","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}
{"title":"Investigating a Boron Nitride Plate for the Formaldehyde Adsorption: Density Functional Theory Calculations","authors":"","doi":"10.33263/briac134.346","DOIUrl":"https://doi.org/10.33263/briac134.346","url":null,"abstract":"A boron nitride (BN) plate was investigated in this work for adsorbing the formaldehyde (Frm) substance by performing the density functional theory (DFT) calculations. The singular models of BN and Frm were optimized first, and their combinations were re-optimized next to obtain Frm@BN complexes; F1 and F2 were found. To manage the interaction processes, an iron (Fe) atom was inserted in the center of a small plate. The results showed the benefits of such atomic insertion for approaching the goal of this work. Details of interactions were analyzed, and the results show the existence of two interactions for each of obtained Frm@BN bimolecular models. The model with O…Fe, and H…N interactions (F1) was placed at a higher level of strength than the model with the existence of H…Fe and H…N interactions (F2). Accordingly, energy levels of characteristic frontier molecular orbitals and their related features affirmed the impacts of complex formations leading to the possibility of running diagnostic processes. Additionally, the role of the Fe-doped region was dominant in conducting the adsorption processes, and the results of both F1 and F2 complexes revealed such importance. Consequently, the stabilized models regarding the energies and interactions details affirmed this achievement for proposing the formations of Frm@BN complexes for environmental applications.","PeriodicalId":9026,"journal":{"name":"Biointerface Research in Applied Chemistry","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44912223","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}
{"title":"Recent Development of Synthetic Strategies Towards the Synthesis of Azomethine Analogues: A Brief Review","authors":"","doi":"10.33263/briac134.350","DOIUrl":"https://doi.org/10.33263/briac134.350","url":null,"abstract":"The present review outlines the synthetic routes for forming azomethines and also emphasizes the applications of azomethines in various fields. Azomethines holds a prominent and great potential in synthetic organic chemistry due to their unique structural feature. Azomethines are condensation products of Primary amines and a carbonyl compound. In the present scenario, they are attaining significance because of their vast range of applications in the material science and biological field.","PeriodicalId":9026,"journal":{"name":"Biointerface Research in Applied Chemistry","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42637240","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}