The rational design and functionalization of small, simple, and stable peptides scaffolds is an attractive avenue to mimic catalytic metal-centres of complex proteins, relevant for the design of metalloenzymes with environmental, biotechnological and health impacts. The de novo designed αDIV-L21C framework has a rubredoxin-like metal binding site and was used in this work to incorporate a Mo-atom. Thermostability studies using differential scanning calorimetry showed an increase of 4 °C in the melting temperature of the Mo-αDIV-L21C when compared to the apo-αDIV-L21C. Circular dichroism in the visible and far-UV regions corroborated these results showing that Mo incorporation provides stability to the peptide even though there were almost no differences observed in the secondary structure. A formal reduction potential of ∼ -408 mV vs. NHE, pH 7.6 was determined. Combining electrochemical results, EPR and UV-visible data we discuss the oxidation state of the molybdenum centre in Mo-αDIV-L21C and propose that is mainly in a Mo (VI) oxidation state.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11232944 | PMC |
| http://dx.doi.org/10.1016/j.jinorgbio.2022.112096 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Euchrestifolines A-O, fifteen novel carbazole alkaloids with potent anti-ferroptotic activity from Murraya euchrestifolia.
Nat Prod Bioprospect
January 2025
State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing, 100191, People's Republic of China.
Fifteen novel carbazole alkaloids, euchrestifolines A-O (1-15), were obtained from Murraya euchrestifolia. Their structures were elucidated by spectroscopic analysis, Mosher's ester, calculated ECD, and transition metal complex ECD methods. Notably, euchrestifolines A-C (1-3) are the first naturally occurring pyrrolidone carbazoles to be identified, while euchrestifolines D-F (4-6) represent rare carbazole alkaloids containing a phenylpropanyl moiety; euchrestifoline G (7) features a unique benzopyranocarbazole skeleton.
View Article and Find Full Text PDFHalide-free ion pair organocatalyst from biobased α-hydroxy acid for cycloaddition of CO to epoxide.
Org Biomol Chem
January 2025
State Key Laboratory Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, 30 Puzhu Road South, Nanjing 211816, China.
The cycloaddition of CO to epoxide (CCE) reactions produce valuable cyclic carbonates useful in the electrolytes of lithium-ion batteries, as organic solvents, and in polymeric materials. However, halide-containing catalysts are predominantly used in these reactions, despite halides being notoriously corrosive to steel processing equipment and residual halides also having harmful effects. To eliminate the reliance on halides as cocatalyst in most CCE reactions, halide-free catalysts are highly desirable.
View Article and Find Full Text PDFConstruction of stable Cu/Cu sites at the fullerene/Cu(OH)F interface to boost the electroreduction of CO to C products.
Chem Commun (Camb)
January 2025
School of Chemistry and Chemical Engineering, Institute of Materials Sciences and Engineering, Institute of Clean Energy and Advanced Nanocatalysis (iClean), Anhui Province Key Laboratory of Coal Clean Conversion and High Valued Utilization, Anhui University of Technology, Maanshan 243002, China.
Herein, the reduction of the Cu oxidation state during the CO electro-reduction reaction (CORR) is effectively inhibited by depositing C supramolecular clusters onto the Cu(OH)F surface. By utilizing the unique electronic buffering capacity of C, a significant number of Cu/Cu sites are created, leading to a remarkable faradaic efficiency of C products up to 76.9% and exceptional stability.
View Article and Find Full Text PDFTwo-Dimensional Layer {PMo} Clusters Constructed with N-Ligands for Bifunctional Properties of Proton Conduction and Supercapacitors.
Inorg Chem
January 2025
School of Chemistry and Environmental Engineering, Changchun University of Science and Technology, Changchun 130022, People's Republic of China.
Proton exchange membrane fuel cells (PEMFCs) are developing into very meaningful clean energy to fundamentally address environmental pollution. Among which the most studied Nafion series membranes are limited under large-scale use, and some strong oxidizing groups such as hydrogen peroxide will attack the structure of Nafion, shortening the lifespan of PEMFCs. Therefore, it is crucial to develop a proton-conductive material with strong stability and broad application.
View Article and Find Full Text PDFPreparation of novel lithiated high-entropy spinel-type oxyhalides and their electrochemical performance in Li-ion batteries.
Nanoscale
January 2025
J. Heyrovský Institute of Physical Chemistry, Czech Acad. Sci., Dolejškova 3, CZ-18200, Prague 8, Czech Republic.
Compositionally complex doping of spinel oxides toward high-entropy oxides is expected to enhance their electrochemical performance substantially. We successfully prepared high-entropy compounds, the oxide (ZnMgCoCu)FeO (HEOFe), lithiated oxyfluoride Li(ZnMgCoCu)FeOF (LiHEOFeF), and lithiated oxychloride Li(ZnMgCoCu)FeOCl (LiHEOFeCl) with a spinel-based cubic structure by ball milling and subsequent heat treatment. The products exhibit particles with sizes from 50 to 200 nm with a homogeneous atomic distribution.
View Article and Find Full Text PDFWant 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!