The popular sweetener, aspartame, is an agonist of the tongue's sweet taste receptor. How water molecules affect its conformation or which aspartame atoms are more prone to interact with solvent are helpful questions to understand its activity in different environments. Here, the combination of IR-UV spectroscopic techniques with computational simulations has been successfully applied to characterize aspartame·water clusters, showing that the addition of water molecules simplifies the conformational panorama of aspartame, favoring the formation of folded structures by interaction with the polar part of the molecule.

Download full-text PDF

Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11331506PMC
http://dx.doi.org/10.1021/acs.jpca.4c04315DOI Listing

Publication Analysis

Top Keywords

water molecules
8
aspartame
4
aspartame microhydrated
4
microhydrated aggregates
4
aggregates revealed
4
revealed laser
4
laser spectroscopy
4
spectroscopy water-sweetener
4
water-sweetener interactions
4
interactions gas
4

Similar Publications

Molecular Mechanisms of Humic Acid in Inhibiting Silica Scaling during Membrane Distillation.

Environ Sci Technol

January 2025

Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Shandong University, Qingdao 266237, P. R. China.

Membrane distillation (MD) efficiently desalinizes and treats high-salinity water as well as addresses the challenges in handling concentrated brines and wastewater. However, silica scaling impeded the effectiveness of MD for treating hypersaline water and wastewater. Herein, the effects of humic acid (HA) on silica scaling behavior during MD are systematically investigated.

View Article and Find Full Text PDF

Aminobenzoic Acid Covalently Modified Polyoxotungstates Based on {XW} Clusters with Proton Conductivity Property.

Inorg Chem

January 2025

Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Molecular Sciences, Henan University, Kaifeng, Henan 475004, P. R. China.

Three cases of aminobenzoic acid hybrid polyoxotungstates, Na(HO)[(HPWO) (OCCHNH)]·7HO (), K(HO)[(AsWO)(OCCHNH)]·4HO (), and [(HN(CH)]Na(HO)[(SbWO) (OCCHNH)]·7HO (), were successfully synthesized. This is the first report of the successful assembly of the hexanuclear {XW} (X = HP, As, or Sb) clusters and organic carboxylic acid (para aminobenzoic acid) ligands. All three hybrids feature a common {XW} unit composed of a six-membered {WO} octahedral ring capped by one {XO} trigonal pyramid.

View Article and Find Full Text PDF

Using high-level quantum chemical calculations, we predicted a strong O-H⋯C interaction between the apical carbon atoms of pyramidane and its derivatives and water molecules. Analysis of calculated electrostatic potential maps showed that there are areas of strong negative potential above apical carbon atoms in all studied structures. The results of quantum chemical calculations showed that the O-H⋯C interaction between the hydrogen atom of water and the apical carbon atom of pyramidane derivatives with four -CH substituents is unexpectedly strong, Δ = -7.

View Article and Find Full Text PDF

Environmentally tolerant multifunctional eutectogel for highly sensitive wearable sensors.

Mater Horiz

January 2025

Institute of Biomedical Engineering, College of Medicine, Southwest Jiaotong University, Chengdu 610031, China.

Flexible hydrogel sensors have found extensive applications. However, the insufficient sensing sensitivity and the propensity to freeze at low temperatures restrict their use, particularly in frigid conditions. Herein, a multifunctional eutectogel with high transparency, anti-freezing, anti-swelling, adhesive, and self-healing properties is prepared by a one-step photopolymerization of acrylic acid and lauryl methacrylate in a binary solvent comprising water and deep eutectic solvent (DES).

View Article and Find Full Text PDF

A humanized anti-MSLN×4-1BB bispecific antibody exhibits potent antitumour activity through 4-1BB signaling activation and fc function without systemic toxicity.

J Transl Med

January 2025

Department of Medical Oncology, Division of Life Sciences and Medicine, The First Affiliated Hospital of USTC, University of Science and Technology of China, Anhui Provincial Cancer Hospital, Hefei, 230031, Anhui, China.

Background: Agonistic monoclonal antibodies targeting 4-1BB/CD137 have shown preclinical promise, but their clinical development has been limited by severe liver toxicity or limited efficacy. Therefore, a safe and efficient immunostimulatory molecule is urgently needed for cancer immunotherapy.

Methods: A novel anti-MSLN×4-1BB bispecific antibody (bsAb) was generated via antibody engineering, and its affinity and activity were detected via enzyme-linked immunosorbent assay (ELISA), flow cytometry, and T-cell activation and luciferase reporter assays.

View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!