Metal Complexes of Amino Acids and Peptides

Farkas, Etelka; Sóvágó, Imre

doi:10.1002/chin.200742251

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2022

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“…There are 20 different amino acids that make up proteins out of which 9 are essential and 11 are non-essential amino acids 4 . Through their amine and carboxylate groups, amino acids combine with different metal ions to form stable five-membered chelates [5][6][7] .…”

Section: Introductionmentioning

confidence: 99%

Chemical Distribution, Stability and Structures of Ternary Metal Chelates in Ethylene Glycol – Water Media Involving Mercaptosuccinic Acid and Some Non-Essential Amino Acids

Swamy¹,

Kumar²,

Manikandan

2022

Orient. J. Chem

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There has been focus upon the study of stability constants of amino acids with metal ions since they processes antibacterial activities. The stability constants of ternary complexes were determined by pH metric analysis in aqueous solution at 25.0 0C between ligands (Mercaprosuccinicacid (MSA), Glycine (GLY), L-Aspartic acid (ASP) and L-Asparagine (ASN)) and some transition metal ions(Co(II), Ni(II), Cu(II) and Zn(II)) in varying Ethylene glycol – water media. The "MINIQUAD75" software tool analysed the potentiometric data to create a complexation model for each system. Based on the calculated equilibrium and stability constants, the most likely binding mechanism for each ternary species was discussed. Their relative stabilities and plausible structures were also proposed.

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Section: Introductionmentioning

confidence: 99%