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In the present study, the coordination abilities of Ac-TLEGTKKGHKLHLβDY-NH2 peptide (the analogue of SPARC 114–128 fragment containing β-Asp127 residue) are discussed. The analysis is provided based on the results of potentiometric and spectroscopic measurements supported by quantum-chemical calculations. Presented results clearly show that the β-Asp amino acid residue may influence the efficiency...