Spectroscopic characterization of Cu(II) complex of L-phenylalanine and D,L-tryptophan

被引：17

作者：

Altun, Oezlen ^{[1
]}

Bilcen, Selin ^{[1
]}

机构：

[1] Trakya Univ, Dept Chem, Fac Sci & Letters, TR-22030 Edirne, Turkey

来源：

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2010年 / 75卷 / 02期

关键词：

L-Phenylalanine; D; L-Tryptophan; Copper(II); Spectrophotometry; Reaction kinetic; CARBON-PASTE ELECTRODE; TRYPTOPHAN; ACID; CYTOTOXICITY; NICOTINAMIDE; EQUILIBRIUM; HYDROLYSIS; CYSTEINE; CRYSTAL; LEUCINE;

D O I：

10.1016/j.saa.2009.11.056

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

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) = kdt 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. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：789 / 793

页数：5

共 51 条

[1] High resolution crystal structures of the catalytic domain of human phenylalanine hydroxylase in its catalytically active Fe(II) form and binary complex with tetrahydrobiopterin [J].

Andersen, OA ;

Flatmark, T ;

Hough, E .

JOURNAL OF MOLECULAR BIOLOGY, 2001, 314 (02) :279-291

[2] Cytotoxicity and oxidative mechanisms of different forms of chromium [J].

Bagchi, D ;

Stohs, SJ ;

Downs, BW ;

Bagchi, M ;

Preuss, HG .

TOXICOLOGY, 2002, 180 (01) :5-22

[3] Renewable stationary phase liquid magnetochromatography:: determining aspartame and its hydrolysis products in diet soft drinks [J].

Barrado, E. ;

Rodriguez, J. A. ;

Castrillejo, Y. .

ANALYTICAL AND BIOANALYTICAL CHEMISTRY, 2006, 385 (07) :1233-1240

[4] A turn-on fluorescent indicator for citrate with micromolar sensitivity [J].

Burguete, M. Isabel ;

Galindo, Francisco ;

Luis, Santiago V. ;

Vigara, Laura .

DALTON TRANSACTIONS, 2007, (36) :4027-4033

[5]

Cuyckens F, 2004, J MASS SPECTROM, V39, P1, DOI [10.1002/jms.585, 10.1002/jms.622]

[6]

DAVIS AP, 2004, ENCY SUPRAMOLECULAR, V1, P236

[7]

ELGAHAMI MA, 2004, J INORG ORGANOMET P, V117, P129

[8] Separation of L-phenylalanine by nondispersive extraction and backextraction. Equilibrium and kinetic parameters [J].

Escalante, H ;

Alonso, AI ;

Ortiz, I ;

Irabien, A .

SEPARATION SCIENCE AND TECHNOLOGY, 1998, 33 (01) :119-139

[9] Synthesis and characterization of three new Cu(II)-dipeptide complexes [J].

Facchin, G ;

Torre, MH ;

Kremer, E ;

Piro, OE ;

Castellano, EE ;

Baran, EJ .

JOURNAL OF INORGANIC BIOCHEMISTRY, 2002, 89 (3-4) :174-180

[10] Crystal structures of the N-salicylidene-L-serinatoaquacopper(II) monohydrate and its ternary derivative with 2-aminopyridine [J].

García-Raso, A ;

Fiol, JJ ;

López-Zafra, A ;

Cabrero, A ;

Mata, I ;

Molins, E .

POLYHEDRON, 1999, 18 (06) :871-878

← 1 2 3 4 5 6 →