6533b838fe1ef96bd12a3ee9

RESEARCH PRODUCT

Unusual binding ability of α,β-dehydrodipeptides towards metal ions

Małgorzata Jeżowska-bojczukImre SóvágóLeszek SmelkaZbigniew KubicaHenryk KozlowskiBarbara Rzeszotarska

subject

StereochemistryMetal ions in aqueous solutionPotentiometric titrationbody regionsInorganic Chemistrychemistry.chemical_compoundBinding abilityDeprotonationTermészettudományokchemistryOctahedronAmideMaterials ChemistryPh rangePhysical and Theoretical ChemistryKémiai tudományok

description

Abstract Ni II , Zn II and Co II complexes of α,β-dehydro-dipeptides (containing Gly, Leu, Ala, Val or Phe residues) were studied by potentiometric and spectroscopic methods. Deprotonation and coordination of amide nitrogens occurred in all cases around the physiological pH range. The dipeptides with composition of Xaa-Δ-Ala formed octahedral species, while Gly-Δ-Xaa (Xaa = Leu or Phe) formed square planar bis complexes with Ni II .

https://doi.org/10.1016/s0277-5387(00)81321-2