Results 41 to 50 of about 625,745 (242)

A Comparative Study of Linked 2, 2’-Dipyridylamine Ligand System as an Ion Selective Electrode for Ag (I) Ions

International Journal of Electrochemical Science, 2010
The linked 2, 2’-dipyridylamine derivatives have been explored as neutral carrier ionophores for preparing poly (vinyl chloride) based electrodes selective to Ag(I) ions.
Susheel K Mittal, Pawan Kumar, Ashok Kumar S K, Leonard F Lindoy   +3 more
doaj   +1 more source

Graphical and computational methods for determining the stability constants of mono- and polynuclear complexes with a common intersection point of the family of formation curves

Romanian Journal of Ecology & Environmental Chemistry, 2020
Aqueous polynuclear systems have been analyzed, for which the family of formation curves intersects at a common point. The analyzed graphical and computational method for determining the stability constants can be used as initial values within the ...
Igor Povar, Oxana Spinu, Boris Pintilie
doaj   +1 more source

Calpain small subunit homodimerization is robust and calcium‐independent

FEBS Letters, EarlyView.
Calpains dimerize via penta‐EF‐hand (PEF) domains. Using single‐molecule force spectroscopy, we measured the strength and kinetics of PEF–PEF homodimer binding. The interaction is robust, shows a transient conformational step before dissociation, and remains largely insensitive to Ca2+.
Nesha May O. Andoy, Trina Dykstra‐MacPherson, Mathias A. Bell, Peter L. Davies, Ruby May A. Sullan   +4 more
wiley   +1 more source

Best Constant in Ulam Stability for the Third Order Linear Differential Operator with Constant Coefficients

Axioms, 2023
The authors of the present paper previously proved the Ulam stability for the n-th-order linear differential operator with constant coefficients. They obtained its best Ulam constant for the case of distinct roots of the characteristic equation. However,
Alina Ramona Baias, Dorian Popa
doaj   +1 more source

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

FEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa, Konstantinos Makryniotis, Theofani‐Iosifina Sousani, Evangelos Topakas, Vangelis Daskalakis, Maria Dimarogona   +5 more
wiley   +1 more source

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

FEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source

Studies of Complexation of Transition Metal Ions With Benazepril Drug in Aqueous Media: Thermodynamic Aspect

To Chemistry Journal, 2020
Stability constant of Benazepril hydrochloride drug with transition metal ions Fe3+, Co2+, Ni2+, Cu2+, Zn2+ and Cd2+ using a pH metric titration technique in 20%(v/v) ethanol-water mixture at three different temperatures 300K, 310K & 320K at an ionic ...
Shailendrasingh Thakur, M. A. Sakhare, D. B. Jirekar, Ramesh Ware, P. P. Ghumare   +4 more
doaj   +2 more sources

A methionine‐lined active site governs carbocation stabilization and product specificity in a bacterial terpene synthase

FEBS Letters, EarlyView.
This study reveals a unique active site enriched in methionine residues and demonstrates that these residues play a critical role by stabilizing carbocation intermediates through novel sulfur–cation interactions. Structure‐guided mutagenesis further revealed variants with significantly altered product profiles, enhancing pseudopterosin formation. These
Marion Ringel, Carl P. O. Helmer, Shani Zev, Ronja Driller, Emily Buhr, Markus Reinbold, Renana Schwartz, Gabriel Foley, Mikael Boden, Daniel Garbe, Gerhard Schenk, Dan Thomas Major, Bernhard Loll, Thomas Brück   +13 more
wiley   +1 more source

Paper ionophoretic technique in the study of biologically important beryllium(II) / cobalt(II)-homoserine binary complexes in solution

Macedonian Journal of Chemistry and Chemical Engineering, 2010
Quantitative indication of the process of forming a complex comes from the evaluation of the stability constants, which characterize the equilibria corresponding to the successive addition of ligands.
Brij Bhushan Tewari
doaj   +1 more source

Thermodynamic parameters of phenylglycine interaction with UO2 2+, La3+ and Zr4+

BMC Chemistry, 2023
Phenylglycine interactions with (UO2 2+, La3+ and Zr4+) transition metal ions were studied at different ionic strengths and different temperature degrees applying Bjerrum’s method. The work determine and discuss both the thermodynamic stabilities and the
Farid I. El-Dossoki, AbdAllah AbdEl-Wahab Mohamed   +1 more
doaj   +1 more source