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Martens U, Böttcher D, Talbot D, Bornscheuer U, Abou-Hassan A, Delcea M. Maghemite nanoparticles stabilize the protein corona formed with transferrin presenting different iron-saturation levels. NANOSCALE 2019; 11:16063-16070. [PMID: 31432845 DOI: 10.1039/c9nr04967c] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Magnetic nanoparticles are ideal candidates for biomedical applications given their potential use in magnetic resonance imaging, magnetic hyperthermia and targeted drug delivery. Understanding protein-nanoparticle interactions in the blood stream is of major importance due to their potential risks, especially immunogenicity (i.e. the ability to induce an immune response). Here, we report on the interaction of superparamagnetic maghemite (γ-Fe2O3) nanoparticles with human blood plasma protein transferrin presenting different iron-saturation levels: partially iron-saturated (i.e. transferrin) and iron-free transferrin (i.e. apotransferrin). The nanoparticle-protein interaction and the protein corona formation were studied using biophysical and chemical approaches based on dynamic light scattering, gel electrophoresis, circular dichroism spectroscopy and differential scanning fluorimetry. We found that iron content governs the protein corona formation and induces a strong effect on the thermal stability of the bound protein. Our results demonstrate a stabilizing effect of the nanoparticles with a change of the unfolding position of approximately 10 °C towards higher temperatures for transferrin. Our study may be relevant for the further development of magnetic nanoparticles as diagnostic and therapeutic tools.
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Affiliation(s)
- Ulrike Martens
- Institute of Biochemistry, University of Greifswald, Felix-Hausdorff-Str. 4, 17489 Greifswald, Germany. and ZIK HIKE - Center for Innovation Competence "Humoral Immune Reactions in Cardiovascular Diseases", University of Greifswald, Fleischmannstr. 42-44, 17489 Greifswald, Germany
| | - Dominique Böttcher
- Institute of Biochemistry, University of Greifswald, Felix-Hausdorff-Str. 4, 17489 Greifswald, Germany.
| | - Delphine Talbot
- Sorbonne Université, CNRS, Physico-chimie des Electrolytes et Nanosystèmes InterfaciauX, F-75005 Paris, France
| | - Uwe Bornscheuer
- Institute of Biochemistry, University of Greifswald, Felix-Hausdorff-Str. 4, 17489 Greifswald, Germany.
| | - Ali Abou-Hassan
- Sorbonne Université, CNRS, Physico-chimie des Electrolytes et Nanosystèmes InterfaciauX, F-75005 Paris, France
| | - Mihaela Delcea
- Institute of Biochemistry, University of Greifswald, Felix-Hausdorff-Str. 4, 17489 Greifswald, Germany. and ZIK HIKE - Center for Innovation Competence "Humoral Immune Reactions in Cardiovascular Diseases", University of Greifswald, Fleischmannstr. 42-44, 17489 Greifswald, Germany
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Valencia I, Ávila-Torres Y, Barba-Behrens N, Garzón IL. Circular dichroism and optical absorption spectra of mononuclear and trinuclear chiral Cu(II) amino-alcohol coordinated compounds: A combined theoretical and experimental study. J Mol Struct 2015. [DOI: 10.1016/j.molstruc.2014.12.061] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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3
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Valencia I, Ávila-Torres Y, Barba-Behrens N, Garzón IL. Structural, vibrational, and electronic properties of an uncoordinated pseudoephedrine derivative and its mononuclear and trinuclear copper(II)-coordinated compounds: A combined theoretical and experimental study. J Mol Struct 2014. [DOI: 10.1016/j.molstruc.2014.08.020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Ugarte M, Osborne NN, Brown LA, Bishop PN. Iron, zinc, and copper in retinal physiology and disease. Surv Ophthalmol 2013; 58:585-609. [DOI: 10.1016/j.survophthal.2012.12.002] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2012] [Revised: 12/09/2012] [Accepted: 12/11/2012] [Indexed: 12/26/2022]
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Martínez A, Suárez J, Shand T, Magliozzo RS, Sánchez-Delgado RA. Interactions of arene-Ru(II)-chloroquine complexes of known antimalarial and antitumor activity with human serum albumin (HSA) and transferrin. J Inorg Biochem 2011; 105:39-45. [PMID: 21113330 PMCID: PMC2990986 DOI: 10.1016/j.jinorgbio.2010.09.005] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
The interactions of π-arene-Ru(II)-chloroquine complexes with human serum albumin (HSA), apotransferrin and holotransferrin have been studied by circular dichroism (CD) and UV-Visible spectroscopies, together with isothermal titration calorimetry (ITC). The data for [Ru(η(6)-p-cymene)(CQ)(H(2)O)Cl]PF(6) (1), [Ru(η(6)-benzene)(CQ)(H(2)O)Cl]PF(6) (2), [Ru(η(6)-p-cymene)(CQ)(H(2)O)(2)][PF(6)](2) (3), [Ru(η(6)-p-cymene)(CQ)(en)][PF(6)](2) (4), [Ru(η(6)-p-cymene)(η(6)-CQDP)][BF(4)](2) (5) (CQ: chloroquine; DP: diphosphate; en: ethylenediamine), in comparison with CQDP and [Ru(η(6)-p-cymene)(en)Cl][PF(6)] (6) as controls demonstrate that 1, 2, 3, and 5, which contain exchangeable ligands, bind to HSA and to apotransferrin in a covalent manner. The interaction did not affect the α-helical content in apotransferrin but resulted in a loss of this type of structure in HSA. The binding was reversed in both cases by a decrease in pH and in the case of the Ru-HSA adducts, also by addition of chelating agents. A weaker interaction between complexes 4 and 6 and HSA was measured by ITC but was not detectable spectroscopically. No interactions were observed for complexes 4 and 6 with apotransferrin or for CQDP with either protein. The combined results suggest that the arene-Ru(II)-chloroquine complexes, known to be active against resistant malaria and several lines of cancer cells, also display a good transport behavior that makes them good candidates for drug development.
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Affiliation(s)
- Alberto Martínez
- Chemistry Department, Brooklyn College and The Graduate Center, The City University of New York, 2900 Bedford Avenue, Brooklyn, NY 11210, USA
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6
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Harris WR, Messori L. A comparative study of aluminum(III), gallium(III), indium(III), and thallium(III) binding to human serum transferrin. Coord Chem Rev 2002. [DOI: 10.1016/s0010-8545(02)00037-1] [Citation(s) in RCA: 74] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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7
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Iron(III) complexes of phenolate ligands as models for catechol dioxygenases. J CHEM SCI 1996. [DOI: 10.1007/bf02870029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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8
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Tang S, MacColl R, Parsons PJ. Spectroscopic study of the interaction of aluminum ions with human transferrin. J Inorg Biochem 1995; 60:175-85. [PMID: 8586971 DOI: 10.1016/0162-0134(95)00018-j] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Transferrin is the plasma protein responsible for transporting Fe3+ from the absorption to the utilization site. Interactions of apo- and holo-transferrin with Al3+ were studied by circular dichroism (CD), UV-visible, and fluorescence spectrometry. Binding of Al3+ to both metal-ion binding sites of apo-transferrin was confirmed by fluorescence studies. No interaction of Al3+ with holo-transferrin was observed, indicating that Al3+ cannot displace Fe3+ under the experimental conditions employed. An increase in tryptophan fluorescence (lambda max at 330 nm) by excitation at either 280 or 295 nm was observed after Al3+ interaction with apo-transferrin. There was no shift in wavelength of the fluorescence band of apo-transferrin after interaction with Al3+, but the intensity did increase. Since excitation at 295 nm is specific for tryptophan residues, tryptophan but not tyrosine must be responsible for the change in fluorescence intensity. Decreased fluorescence is the result of Fe3+ binding to apo-transferrin. The CD spectrum of apo-transferrin was slightly affected in the far UV by Al3+ binding, but a salient change was noted in the near UV at approximately 288 nm where tyrosine and tryptophan absorb. It is concluded that a small conformational change in the protein was induced by Al3+ binding to apo-transferrin.
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Affiliation(s)
- S Tang
- Department of Environmental Health and Toxicology, School of Public Health, State University of New York at Albany, USA
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Harrington JP, Stuart J, Jones A. Unfolding of iron and copper complexes of human lactoferrin and transferrin. THE INTERNATIONAL JOURNAL OF BIOCHEMISTRY 1987; 19:1001-8. [PMID: 3666279 DOI: 10.1016/0020-711x(87)90184-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
1. Human lactoferrin and transferrin are capable of binding two iron or copper ions into specific binding sites in the presence of bicarbonate. 2. Urea and several alkyl ureas have been effective in unfolding these metal-protein complexes. 3. Biphasic transitions are observed for the unfolding of each of the metal complexes of these proteins as determined by direct visible spectroscopy suggesting the release of iron(III) and Cu(II) ions from both of these metal-binding proteins during the unfolding process. 4. Greater stabilization and increased resistance to protein unfolding is observed for all iron(III) complexes compared to Cu(II) complexes of lactoferrin and transferrin as determined by isothermal unfolding and thermal denaturation. 5. Relative stabilization of the different metal-protein complexes investigated within this study were determined to be as follows: Lf-Fe(III) greater than Lf-Cu(II); Tf-Fe(III) greater than Tf-Cu(II), and Lf-Fe(III) greater than Tf-Fe(III); Lf-Cu(II) greater than Tf-Cu(II).
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Affiliation(s)
- J P Harrington
- Department of Chemistry, University of Alaska, Anchorage 99508
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MacGillivray RT, Mendez E, Sinha SK, Sutton MR, Lineback-Zins J, Brew K. The complete amino acid sequence of human serum transferrin. Proc Natl Acad Sci U S A 1982; 79:2504-8. [PMID: 6953407 PMCID: PMC346227 DOI: 10.1073/pnas.79.8.2504] [Citation(s) in RCA: 113] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
The complete amino acid sequence of human serum transferrin has been determined by aligning the structures of the 10 CNBr fragments. The order of these fragments in the polypeptide chain is deduced from the structures of peptides overlapping methionine residues and other evidence. Human transferrin contains 678 amino acid residues and--including the two asparagine-linked glycans--has an overall molecular weight of 79,550. The polypeptide chain contains two homologous domains consisting of residues 1-336 and 337-678, in which 40% of the residues are identical when aligned by inserting gaps at appropriate positions. Disulfide bond arrangements indicate that there are seven residues between the last half-cystine in the first domain and the first half-cystine in the second domain and therefore, a maximum of seven residues in the region of polypeptide between the two domains. Transferrin--which contains two Fe-binding sites--has clearly evolved by the contiguous duplication of the structural gene for an ancestral protein that had a single Fe-binding site and contained approximately 340 amino acid residues. The two domains show some interesting differences including the presence of both N-linked glycan moieties in the COOH-terminal domain at positions 413 and 610 and the presence of more disulfide bonds in the COOH-terminal domain (11 compared to 8). The locations of residues that may function in Fe-binding are discussed.
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11
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Antanaitis BC, Strekas T, Aisen P. Characterization of pink and purple uteroferrin by resonance Raman and CD spectroscopy. J Biol Chem 1982. [DOI: 10.1016/s0021-9258(18)34847-6] [Citation(s) in RCA: 55] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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12
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Keung W, Azari P, Phillips J. Structure and function of ovotransferrin. I. Production of iron-binding fragments from iron-ovotransferrin by the action of immobilized subtilisin. Purification and characterization of the fragments. J Biol Chem 1982. [DOI: 10.1016/s0021-9258(19)68171-8] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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13
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Abstract
1. Both albumin and transferrin have been suggested as carriers of zinc in plasma. Their relative importance in Zn transport was therefore investigated as a preliminary to a study of the rates of passage of Zn through plasma. 2. The apparent log stability constant for Zn binding to human apotransferrin at pH 7.4 was estimated to be approximately 5.9 which is substantially lower than previous reports of 7.0 for the corresponding value for Zn binding to albumin (Giroux & Henkin, 1972). 3. When the relative abilities of human albumin and apotransferrin to compete for Zn with low-molecular-weight chelators were compared at the same relative concentrations of these proteins as are found in plasma, albumin retained substantially more Zn then transferrin. 4. It seems likely that albumin acts as the major transport protein for Zn in plasma of most species, Zn also being present firmly bound to alpha 2-macroglobulin. 5. In porcine plasma or serum however, there were three major Zn-binding proteins, two of which were probably albumin and alpha 2-macroglobulin. The nature of the third component remains unknown but it appeared to have a molecular weight of between 1000000-14000000, it was precipitated by 2.2 M-ammonium sulphate and by 150 g polyethylene glycol/l. 6. There were no significant differences in Zn distribution in plasma of porcine blood obtained from the aorta, the posterior vena cava or from the hepatic portal vein but use of heparin as an anticoagulant altered the normal pattern of distribution of Zn in plasma.
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Kannagi R, Koizumi K, Masuda T. Limited hydrolysis of platelet membrane phospholipids. On the proposed phospholipase-susceptible domain in platelet membranes. J Biol Chem 1981. [DOI: 10.1016/s0021-9258(19)69946-1] [Citation(s) in RCA: 58] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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15
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Baldwin DA. The kinetics of iron release from human transferrin by EDTA. Effect of salts and detergents. BIOCHIMICA ET BIOPHYSICA ACTA 1980; 623:183-98. [PMID: 6769499 DOI: 10.1016/0005-2795(80)90020-3] [Citation(s) in RCA: 57] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
The kinetics of iron release from diferric human transferrin by EDTA at pH 7.4 and 37 degrees C has been studied. Equations have been derived which give the expected absorbance-time curves when the two sites are kinetically homogeneous or heterogeneous and these have been compared to the experimental results. In the absence of added salts or detergents,the two sites are kinetically similar but not identical with respect to iron release. However, the two sites are kinetically homogeneous in 0.02 M laurylpyridinium chloride and 2 M LiCl. In NaClO4 (greater than 0.50 M) there are two parallel pathways for iron release; 80% of the total iron being released heterogeneously and 20% apparently homogeneously. For the simple electrolyte ions studied, the rate of iron release from diferric-transferrin increases in accordance with the lyotropic series: SO4 2- less than HCO-2 less than Cl- less than ClO4- and Na+ less than Li+. Sodium dodecyl sulphate (0.02 M) and LiCl (2.0 M) increase the rate of ion release by 0.1 M EDTA by 32- and 27-fold, respectively. The results show that conformational states are attainable from which iron can be released either homogeneously or heterogeneously and from which iron release is facilitated. It is proposed that the structure of the transferrin binding site on the cell membrane and/or the presence of another molecule may promote these conformers in vivo.
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16
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Charlwood PA. The relative affinity of transferrin and albumin for zinc. BIOCHIMICA ET BIOPHYSICA ACTA 1979; 581:260-5. [PMID: 518914 DOI: 10.1016/0005-2795(79)90245-9] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The relative affinity of transferrin and albumin for zinc has been measured by competitive dialysis at a low zinc concentration in 0.15 M NaCl, 50 mM HEPES, 0.1 mM trisodium citrate (pH 7.2). There were small differences between albumins and larger ones between transferrin preparations, but all albumins bound zinc more firmly than any transferrin did. It is known that transferrin is largely responsible for the uptake of zinc from an intestinal membrane in rats, but much of the metal is subsequently transferred to albumin. The current results show that both in humans and in rats (a) no special mechanism is needed to provide energy for this transfer, and (b) full equilibration would lead to virtually complete transfer in contrast with what actually occurs in vivo.
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Figueroa N, Nagy B, Chakrabarti B. Cu2+-hyaluronic acid complex: spectrophotometric detection. Biochem Biophys Res Commun 1977; 74:460-5. [PMID: 836302 DOI: 10.1016/0006-291x(77)90326-6] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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18
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Tomimatsu Y, Donovan JW. Spectroscopic evidence for perturbation of tryptophan in Al(III) and Ga(III) binding to ovotransferrin and human serum transferrin. FEBS Lett 1976; 71:299-302. [PMID: 1001446 DOI: 10.1016/0014-5793(76)80955-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Mazurier J, Aubert JP, Loucheux-Lefevre MH. Comparative circular dichroism studies of iron-free and iron-saturated forms of human serotransferrin and lactortransferrin. FEBS Lett 1976; 66:238-42. [PMID: 955086 DOI: 10.1016/0014-5793(76)80512-1] [Citation(s) in RCA: 34] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Prados R, Boggess RK, Martin RB. Fe(III) and Cu(II) conalbumin visible circular dichroism spectra. BIOINORGANIC CHEMISTRY 1975; 4:135-42. [PMID: 1168509 DOI: 10.1016/s0006-3061(00)81022-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The single polypeptide chain of conalbumin strongly binds two Fe(III) or two Cu(II) ions to yield intense absorption in the visible region similar to that shown by the related protein transferrin. Comparison of the metal-ion-binding sites in the two proteins is made by exploiting the sensitivity to ligand geometry of circular dichroism (CD). For the Fe(III) proteins strong similarities of the CD spectra outweigh marginal differences. For Cu(II) conalbumin an additional negative extremum near 506 nm appears between two positive ones at 634 and 410 nm suggesting greater subtraction of oppositely signed CD components leading to lesser magnitudes for the two positive peaks than are found in Cu(II)-transferrin. The two Fe(III)-binding sites within conalbumin are compared by noting the strong similarities of the CD and MCD of proteins with Fe(III) in one site and Ga(III) in the other site, and vice versa, with the protein containing Fe(III) in both sites. Due to features of the amino acid sequences of the single protein chains, the four strong metal ion binding sites in conalbumin and transferrin cannot be identical in all particulars, yet CD spectra of their metal ion complexes are closely similar. From a study of model phenolate complexes and the wavelength maxima of visible absorption in the Fe(III), Cu(II), and Co(III) proteins near 465, 440, and 405 nm, respectively, these strong absorption bands are identified as ligand to metal ion electron-transfer transitions. It is suggested that tyrosyl residues are the donors in the electron transfer transitions and that they lock in the metal ions after being keyed into position by binding of bicarbonate or other anions.
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Parry RM, Brown EM. Lactoferrin conformation and metal binding properties. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 1974; 48:141-60. [PMID: 4429036 DOI: 10.1007/978-1-4684-0943-7_8] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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22
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Strickland EH. Aromatic contributions to circular dichroism spectra of proteins. CRC CRITICAL REVIEWS IN BIOCHEMISTRY 1974; 2:113-75. [PMID: 4591332 DOI: 10.3109/10409237409105445] [Citation(s) in RCA: 578] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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23
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Teuwissen B, Masson PL, Osinski P, Heremans JF. Metal-combining properties of human lactoferrin. The possible involvement of tyrosyl residues in the binding sites. Spectrophotometric titration. EUROPEAN JOURNAL OF BIOCHEMISTRY 1972; 31:239-45. [PMID: 4647178 DOI: 10.1111/j.1432-1033.1972.tb02526.x] [Citation(s) in RCA: 38] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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24
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Tomimatsu Y, Vickery LE. Circular dichroism studies of human serum transferrin and chicken ovotransferrin and their copper complexes. BIOCHIMICA ET BIOPHYSICA ACTA 1972; 285:72-83. [PMID: 4675902 DOI: 10.1016/0005-2795(72)90181-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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