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Cationic Peptides and Their Cu(II) and Ni(II) Complexes: Coordination and Biological Characteristics
Kotynia, Aleksandra ; Wiatrak, Benita ; Kamysz, Wojciech , et al. Int. J. Mol. Sci.,2021,22(21):12028. DOI: 10.3390/ijms222112028 PubMed ID: 34769458
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Abstract: Antimicrobial peptides are a promising group of compounds used for the treatment of infections. In some cases, metal ions are essential to activate these mols. Examples of metalloantibiotics are, for instance, bleomycin and dermcidin. This study is focused on three new pseudopeptides with potential biol. activity. The coordination behavior of all ligands with Cu(II) and Ni(II) ions has been examined Various anal. methods such as potentiometric titration, UV-Vis and CD spectroscopies, and mass spectrometry were used. All compounds are convenient chelators for metal ion-binding. Two of the ligands tested have histidine residues. Surprisingly, imidazole nitrogen is not involved in the coordination of the metal ion. The N-terminal amino group, Dab side chains, and amide nitrogen atoms of the peptide bonds coordinated Cu(II) and Ni(II) in all the complexes formed. The cytotoxicity of three pseudopeptides and their complexes was evaluated. Moreover, their other model allowed for assessing the attenuation of LPS-induced cytotoxicity and anti-inflammatory activities were also evaluated, the results of which revealed to be very promising.
Keywords: Cu(II) complexes ; LPS-neutralization ; Ni(II) complexes ; anti-inflammatory ; cationic peptides ; potentiometric titration ; spectroscopic methods
Purchased from AmBeed: 109425-55-0
CAS No. : | 109425-55-0 | MDL No. : | MFCD00065668 |
Formula : | C25H30N2O6 | Boiling Point : | No data available |
Linear Structure Formula : | - | InChI Key : | JOOIZTMAHNLNHE-NRFANRHFSA-N |
M.W : | 454.52 | Pubchem ID : | 2756114 |
Synonyms : |
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Signal Word: | Warning | Class: | |
Precautionary Statements: | P261-P305+P351+P338 | UN#: | |
Hazard Statements: | H302-H315-H319-H335 | Packing Group: | |
GHS Pictogram: |
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