1
|
Venkatesh B, Ramasamy S, Asokan R, Rifkind JM, Manoharan PT. pHinfluenced metal ion coordination changes in reconstituted hemoglobin. J PORPHYR PHTHALOCYA 2012. [DOI: 10.1142/s108842460300080x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
This paper covers a detailed analysis of the coordination changes taking place at the active sites in both Cu and Ni reconstituted hemoglobin as a function of pH . These experiments provide insight into how proteins are held in their native configuration. The EPR results of CuHb reveal that the species formed in extreme acidic condition were different from those formed at extreme basic condition. At pH 3 we see an isotropic spectrum characteristic of 4-coordinated species, while at pH 12 there is an indication of equilibrium between mixtures of species. Further support for the above coordination changes is obtained from FT-Raman of NiHb at different pH conditions. At pH 3 all the 5-coordination marker bands are lost and there is a shift in the 4-coordination marker band, while at pH 12 both 4- and 5-coordination marker bands are still seen with slight shift in their positions. In addition to this, we could see a new peak at 1633 cm−1. The coordination changes as a function of pH could be seen for both CuHb and NiHb using UV-visible spectroscopic techniques.
Collapse
Affiliation(s)
- Balan Venkatesh
- Department of Chemistry, Regional Sophisticated Instrumentation Center, Indian Institute of Technology Madras, Chennai-600 036, India
| | - Somasundaram Ramasamy
- Department of Chemistry, Regional Sophisticated Instrumentation Center, Indian Institute of Technology Madras, Chennai-600 036, India
- Molecular Dynamics section, National Institute on Aging, National Institute of Health, 5600 Nathan Shock Drive, Baltimore MD 21224, USA
| | - Rengasamy Asokan
- Molecular Dynamics section, National Institute on Aging, National Institute of Health, 5600 Nathan Shock Drive, Baltimore MD 21224, USA
| | - Joseph M. Rifkind
- Department of Chemistry, Regional Sophisticated Instrumentation Center, Indian Institute of Technology Madras, Chennai-600 036, India
| | - Periakaruppan T. Manoharan
- Department of Chemistry, Regional Sophisticated Instrumentation Center, Indian Institute of Technology Madras, Chennai-600 036, India
| |
Collapse
|
2
|
|
3
|
Abstract
The effects of heating on hemoglobin (Hb) and carbon monoxide (CO) levels in human blood were investigated by in vitro experiments. Head-space gas chromatography (HS-GC) using a molecular sieve 5A stationary phase and thermal conductivity detection was adopted for the measurement of CO gas, and spectrophotometric methods were used for the measurement of various Hb forms, protein and heme contents. Deteriorated absorbance spectra were observed for heat-treated blood samples, and double wavelength spectrophotometry was proven to give wrong percent saturation of carboxyhemoglobin content (% CO-Hb). The blood sample taken from one fatal fire casualty gave significantly higher % CO-Hb measured spectrophotometrically, compared to that by HS-GC. Control blood or purified Hb solution, which was saturated with CO in designated extent, was heated in a sealed vial. Under the incubation below 54 degrees C, all Hb forms were stable, except for oxyhemoglobin (Hb-O(2)), which was partially oxidized to met-hemoglobin (Met-Hb). In contrast, under the incubation at 65 degrees C, Met-Hb was denatured completely to be insoluble, and Hb-O(2) was partially denatured via Met-Hb formation. CO-Hb was resistant against heating. The difference of heat susceptibility and precipitability among Hb forms resulted in artificial increase of % CO-Hb. During heating, spontaneous CO was produced from blood.
Collapse
Affiliation(s)
- Y Seto
- Fourth Chemistry Section, National Research Institute of Police Science, 6-3-1, Kashiwanoha, Kashiwa, Chiba 277-0882, Japan.
| | | | | |
Collapse
|
4
|
Sonezaki S, Yagi S, Ogawa E, Kondo A. Analysis of the interaction between monoclonal antibodies and human hemoglobin (native and cross-linked) using a surface plasmon resonance (SPR) biosensor. J Immunol Methods 2000; 238:99-106. [PMID: 10758240 DOI: 10.1016/s0022-1759(00)00144-7] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
To develop a stable immuno-assay system for quantification of human hemoglobin (Hb), the interaction between various antibodies and Hb was studied using a surface plasmon resonance (SPR) biosensor in the BIAcore equipment (Amersham Pharmacia Biotech) with an immobilized anti-Hb antibody sensor chip. When polyclonal antibodies were used, the immuno-reactivity of purified and commercially available Hb decreased drastically with incubation times up to 14 h. This instability of immuno-reactivity of Hb is attributable to the conformational changes in Hb induced by oxidation. On the other hand, of the sixteen monoclonal antibodies tested, four antibodies (MSU-102, -103, -106 and -115) were found to maintain their immuno-reactivities at least up to 24 h. During long-term storage, however, the immuno-reactivity of Hb with these monoclonal antibodies decreased significantly. The chemical betabeta-cross-linking of Hb was effectively able to stabilize the structure of Hb and immuno-reactivity with monoclonal antibodies such as MSU-103 for periods at least up to 70 days. Therefore, the combination of specific monoclonal antibodies such as MSU-103 and a betabeta-cross-linked Hb standard could be used for the quantification of Hb.
Collapse
Affiliation(s)
- S Sonezaki
- Kokura R&D Division, R&D Center, TOTO Ltd., 1-1 Nakashima, 2 Kokurakitaku, Kitakyushu, Japan.
| | | | | | | |
Collapse
|
5
|
|
6
|
Rifkind JM, Abugo O, Levy A, Heim J. Detection, formation, and relevance of hemichromes and hemochromes. Methods Enzymol 1994; 231:449-80. [PMID: 8041268 DOI: 10.1016/0076-6879(94)31030-0] [Citation(s) in RCA: 84] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- J M Rifkind
- Laboratory of Cellular and Molecular Biology, National Institutes of Health, National Institute on Aging, Baltimore, Maryland 21224
| | | | | | | |
Collapse
|
7
|
Alves OC, Wajnberg E. Heat denaturation of metHb and HbNO: e.p.r. evidence for the existence of a new hemichrome. Int J Biol Macromol 1993; 15:273-9. [PMID: 8251441 DOI: 10.1016/0141-8130(93)90026-i] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Electron paramagnetic resonance was used to follow the time dependence of heat denaturation of met- and nitrosyl-haemoglobin (metHb and HbNO) at 60 degrees C, 70 degrees C and 80 degrees C. The spectral changes of both complexes indicate that conformational changes in the protein manifest themselves in changes of the equilibrium of hemichromes in metHb and of six- and five-coordinated iron in HbNO. The formation of a hemichrome which has not been described before, with g = 2.45, 2.27 and 1.85, is observed. A His-Fe-Cys complex is proposed for its structure.
Collapse
Affiliation(s)
- O C Alves
- Centro Brasileiro de Pesquisas Físicas, Rio de Janeiro, Brazil
| | | |
Collapse
|
8
|
Wajnberg E, Bemski G. Electron spin resonance measurements of erythrocytes and hemoglobin stored at 77 K. THE SCIENCE OF NATURE - NATURWISSENSCHAFTEN 1993; 80:472-3. [PMID: 8264802 DOI: 10.1007/bf01136041] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- E Wajnberg
- Centro Brasileiro de Pesquisas Físicas/CBPF-CNPq, Rio de Janeiro, Brasil
| | | |
Collapse
|
9
|
Bara JJ, Szubińska SM, Misiak L. Mössbauer and ESR study of iron in livex--a product of blood. JOURNAL OF BIOCHEMICAL AND BIOPHYSICAL METHODS 1989; 19:241-8. [PMID: 2555406 DOI: 10.1016/0165-022x(89)90030-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- J J Bara
- Institute of Physics, Jagellonian University, Cracow, Poland
| | | | | |
Collapse
|
10
|
|
11
|
Guillochon D, Esclade L, Thomas D. Effect of glutaraldehyde on haemoglobin: oxidation-reduction potentials and stability. Biochem Pharmacol 1986; 35:317-23. [PMID: 3080007 DOI: 10.1016/0006-2952(86)90532-0] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Glutaraldehyde is a reagent widely used for the cross-linking of haemoglobin for use as a blood substitute. Most of the previous studies were limited to oxygen binding equilibria of the glutaraldehyde-modified haemoglobin. This paper concerns the impact of glutaraldehyde on oxidation-reduction equilibria, autoxidation kinetics and stability towards heat and urea of haemoglobin cross-linked in the oxy, deoxy and ferri states. The oxidation-reduction potentials and homotropic effects were reduced; however, the oxidation Bohr effect was not significantly different when compared with native haemoglobin. Haemoglobin immobilized in the oxy or ferri state exhibited a lower redox potential than when immobilized in the deoxy state. The autoxidation rates were increased after cross-linking, particularly at basic pH. Cross-linking stabilizes ferrihaemoglobin better than oxy or deoxyhaemoglobin against thermal- and urea-induced denaturation. Glutaraldehyde cross-linking does not stabilize haemoglobin against urea-denaturation. The experimental results were interpreted as indicating a chemical modification of the protein without 'conformation freezing' and by an opening of the haem pocket to the aqueous solvent.
Collapse
|
12
|
Modulation by alcohol molecules of ferrihemoglobin electronic spin state and crystal field symmetry. Chem Phys Lett 1985. [DOI: 10.1016/0009-2614(85)85500-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
13
|
Raap A, van Leeuwen JW, Rollema HS, de Bruin SH. The spin-state transition of the hemochrome non-equilibrium conformation in partially reduced human methemoglobin. A pulse-radiolysis study of aqueous-methanol solutions of methemoglobin. EUROPEAN JOURNAL OF BIOCHEMISTRY 1978; 88:555-63. [PMID: 211030 DOI: 10.1111/j.1432-1033.1978.tb12481.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The effect of external parameters on the relaxation process of the hemochrome-type non-equilibrium conformation in partially reduced methemoglobin has been investigated. The relaxation of the intermediate ferrous low-spin state to the high-spin equilibrium conformation of hemoglobin appears to be facilitated particularly by protons and phosphate ions. In addition to studying the spin-state transition in aquomethemoglobin we have also studied it in complexes of the heme group in methemoglobin with fluoride, azide and cyanide anions.
Collapse
|
14
|
Bemski G. Study of the heat treatment of hemoglobin by means of spin labels. Biochem Biophys Res Commun 1975; 67:1444-50. [PMID: 1036 DOI: 10.1016/0006-291x(75)90188-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
|
15
|
|
16
|
Coffman RE, Stavens BW. Solvent-induced EPR anisotropy change of the non-heme chromophore of spinach ferredoxin. Biochem Biophys Res Commun 1970; 41:163-9. [PMID: 4318851 DOI: 10.1016/0006-291x(70)90483-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
|
17
|
Gersonde K, Wollmer A. [ESR and CD spectra of the pH-dependent conformation isomers of hemoglobin (3)]. EUROPEAN JOURNAL OF BIOCHEMISTRY 1970; 15:226-36. [PMID: 4323041 DOI: 10.1111/j.1432-1033.1970.tb00999.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
|
18
|
Henry Y, Banerjee R. Electron spin resonance spectra of isolated ferrihemoglobin (alpha, beta and gamma) chains--an attempted correlation with optical absorption spectra. J Mol Biol 1970; 50:99-110. [PMID: 4318207 DOI: 10.1016/0022-2836(70)90107-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
|
19
|
Ichikawa Y, Yamano T. Preparation and physicochemical properties of functional hemoprotein P450 from mammalian tissue microsomes. BIOCHIMICA ET BIOPHYSICA ACTA 1970; 200:220-40. [PMID: 4391996 DOI: 10.1016/0005-2795(70)90166-2] [Citation(s) in RCA: 30] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
|
20
|
Rachmilewitz EA, Peisach J, Bradley TB, Blumberg WE. Role of haemichromes in the formation of inclusion bodies in haemoglobin H disease. Nature 1969; 222:248-50. [PMID: 4305116 DOI: 10.1038/222248a0] [Citation(s) in RCA: 80] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
|
21
|
Rein H, Ristau O, Jung F. Electron spin resonance investigations on ferricytochrome c compounds. EXPERIENTIA 1968; 24:797-8. [PMID: 4300809 DOI: 10.1007/bf02144875] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
|
22
|
|
23
|
Rein H, Ristau O, Hackenberger F, Jung F. Electron spin resonance studies of catalase and some of the catalase compounds. EXPERIENTIA 1968; 24:38-9. [PMID: 4295368 DOI: 10.1007/bf02136778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
|
24
|
|
25
|
|