title: Spectroscopic characterization of Cu(II) complex of L-phenylalanine and D,L-tryptophan.
abstract: In this work, the reactions involving L-phenylalanine and D,L-tryptophan in the presence of Cu(II) ion were studied. Optimum conditions for the reactions were established as pH 7 and lambda=641 nm. When the reaction was kinetic, it was observed that the following rate formula was found as dA/A(n)=k dt and k=3.2 x 10(-4)s(-1), according to absorbance measurements. Using a perpetual change curve, the ratio of [Cu]/[Cu]+L-phenylalanine+[D,L-tryptophan] was found 1:1:1. According to this result, one molecule of L-phenylalanine and one molecule of D,L-tryptophan react with one molecule Cu(II) ion.
authors.affiliation: Department of Chemistry, Faculty of Sciences and Letters, Trakya University, 22030 Edirne, Turkey. ozlenaltun@yahoo.com
authors.forename: Ozlen
authors.initials: O
authors.lastname: Altun
authors.forename: Selin
authors.initials: S
authors.lastname: Bilcen
mesh_terms: D003300:Copper / Q000737:chemistry* / Q000378:metabolism*; D015394:Molecular Structure; D009942:Organometallic Compounds / Q000737:chemistry / Q000378:metabolism; D010649:Phenylalanine / Q000737:chemistry* / Q000378:metabolism*; D017550:Spectroscopy, Fourier Transform Infrared; D014364:Tryptophan / Q000737:chemistry* / Q000378:metabolism*; D014965:X-Rays
chemical_list: D009942:Organometallic Compounds; D010649:Phenylalanine; D003300:Copper; D014364:Tryptophan