The accurate estimation of kinetic parameters is of fundamental importance for biochemical studies for research and industry. In this paper, we demonstrate the application of a modular microfluidic system for execution of enzyme assays that allow determining the kinetic parameters of the enzymatic reactions such as - the maximum rate of reaction and - the Michaelis constant. For experiments, the fluorogenic carbonate as a probe for a rapid determination of the kinetic parameters of hydrolases, such as lipases and esterases, was used. The microfluidic system together with the method described yields the kinetic constants calculated from the concentration of enzymatic product changes via a Michaelis-Menten model using the Lambert function . This modular microfluidic system was validated on three selected enzymes (hydrolases).
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http://dx.doi.org/10.1080/10826068.2019.1605527 | DOI Listing |
Acc Chem Res
January 2025
Department of Chemistry, Ben-Gurion University of the Negev, Be'er Sheva 84105, Israel.
ConspectusA key challenge in modern chemistry research is to mimic life-like functions using simple molecular networks and the integration of such networks into the first functional artificial cell. Central to this endeavor is the development of signaling elements that can regulate the cell function in time and space by producing entities of code with specific information to induce downstream activity. Such artificial signaling motifs can emerge in nonequilibrium systems, exhibiting complex dynamic behavior like bistability, multistability, oscillations, and chaos.
View Article and Find Full Text PDFACS Appl Mater Interfaces
January 2025
Department of Chemical Engineering, University of Michigan, Ann Arbor, Michigan 48109, United States.
Colloidal crystals of micrometer-sized colloids create prismatic structural colors through the grating diffraction of visible light. Here, we develop design rules to engineer such structural color by specifically accounting for the effect of crystal defects. The local quality and grain size of the colloidal structure are varied by performing self-assembly in the presence of a direct current (DC) electric field.
View Article and Find Full Text PDFJ Med Chem
January 2025
Department Chemistry and Biochemistry, Clemens-Schöpf-Institute, Technical University Darmstadt, Darmstadt 64287, Germany.
In recent years, rationally designed macrocycles have emerged as promising therapeutic modalities for challenging drug targets. Macrocycles can improve affinity, selectivity, and pharmacokinetic (PK) parameters, possibly via providing semirigid, preorganized scaffolds. Nevertheless, how macrocyclization affects PK-relevant properties is still poorly understood.
View Article and Find Full Text PDFDisabil Rehabil
January 2025
Department of exercise rehabilitation, Faculty of Sport Sciences, Bu-Ali Sina University, Hamedan, Iran.
Purpose Of The Article: Walking disorders are a significant issue for patients with low back pain. The aim of clinical trials is to compare the effects of cognitive functional therapy (CFT) and neurofeedback training (NFBT) on gait kinetics in chronic non-specific low back pain (CNSLBP) patients.
Materials And Methods: Sixty females with chronic non-specific low back pain were recruitment for clinical trials.
Soft Matter
January 2025
Microfluidics and Microscale Transport Processes Laboratory, Department of Mechanical Engineering, Indian Institute of Technology Guwahati, Guwahati-781039, Assam, India.
This work estimates Michaelis-Menten kinetics parameters for nutrient transport under varying flow rates in the soft roots of Indian mustard () using a plant fluidic device. To find the metallic components within the roots, inductively coupled plasma mass spectrometry (ICP-MS) analysis was performed. The flow rate-dependent metabolic changes were examined using Raman spectral analysis.
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