UNUSUAL BINDING ABILITY OF ALPHA-BETA-DEHYDRODIPEPTIDES TOWARDS METAL-IONS

Authors
JEZOWSKABOJCZUK M KOZLOWSKI H SOVAGO I KUBICA Z RZESZOTARSKA B SMELKA L
Citation
M. Jezowskabojczuk et al., UNUSUAL BINDING ABILITY OF ALPHA-BETA-DEHYDRODIPEPTIDES TOWARDS METAL-IONS, Polyhedron, 13(18), 1994, pp. 2683-2687
Citations number
27
Categorie Soggetti
Chemistry Inorganic & Nuclear",Crystallography
Journal title
Polyhedron → ACNP
ISSN journal
02775387
Volume
13
Issue
18
Year of publication
1994
Pages
2683 - 2687
Database
ISI
SICI code
0277-5387(1994)13:18<2683:UBAOAT>2.0.ZU;2-Q
Abstract
Ni(II), Zn(II) and Co(II) complexes of alpha,beta-dehydro-dipeptides ( containing Gly, Leu, Ala, Val or Phe residues) were studied by potenti ometric and spectroscopic methods. Deprotonation and coordination of a mide nitrogens occurred in all cases around the physiological pH range . The dipeptides with composition of Xaa-DELTA-Ala formed octahedral s pecies, while Gly-DELTA-Xaa (Xaa = Leu or Phe) formed square planar bi s complexes with Ni(II).