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| Registros recuperados : 16 | |
| 10. |  | NUERNBERG, N. J.; WINKLER, H.; RECH, T. D. Resposta de azevem mais serradela ao calcário, nitrogênio e fósforo, num latossolo húmico distrófico do planalto de Santa Catarina. IN: CONGRESSO BRASILEIRO DE CIÊNÇIA DO SOLO, 25., 1995, Viçosa, MG. Resumos expandidos. Viçosa: UFV, 1995. v.3, p. 1430-1432.| Biblioteca(s): Embrapa Tabuleiros Costeiros. |
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| 16. | | NASCIMENTO, O. R.; MARTIN-NETO, L.; TABAK, M.; WAJJNBERG, E.; BEMSKI, G.; WINKLER, H.; BILL, E.; TRAUTWEIN, A. X. Equilibrium of conformational states in met-myoglobin molecules as a function of dehydration level: an EPR and Mossbauer studies. In: ENCONTRO NACIONAL DE FISICA DA MATERIA CONDENSADA, 15., maio 1992, Caxambu, MG. Programa e resumos... Sao Paulo: Sociedade Brasileira de Fisica, 1992. p.59.| Biblioteca(s): Embrapa Instrumentação. |
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| Registros recuperados : 16 | |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Instrumentação. Para informações adicionais entre em contato com cnpdia.biblioteca@embrapa.br. |
Registro Completo
|
Biblioteca(s): |
Embrapa Instrumentação. |
|
Data corrente: |
22/12/1999 |
|
Data da última atualização: |
02/03/2010 |
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Autoria: |
NASCIMENTO, O. R.; MARTIN-NETO, L.; TABAK, M.; WAJJNBERG, E.; BEMSKI, G.; WINKLER, H.; BILL, E.; TRAUTWEIN, A. X. |
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Afiliação: |
USP-IFSC; EMBRAPA-CNPDIA. |
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Título: |
Equilibrium of conformational states in met-myoglobin molecules as a function of dehydration level: an EPR and Mossbauer studies. |
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Ano de publicação: |
1992 |
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Fonte/Imprenta: |
In: ENCONTRO NACIONAL DE FISICA DA MATERIA CONDENSADA, 15., maio 1992, Caxambu, MG. Programa e resumos... Sao Paulo: Sociedade Brasileira de Fisica, 1992. |
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Páginas: |
p.59. |
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Idioma: |
Inglês |
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Conteúdo: |
Protein have been shown to be dynamics molecules and exist in several conformational states and substates. The equilibrium between these conformations depends of different factors and has an important role in biological behavior. In this work the role of hydration degree is investigated in the spin and valence equilibria of the iron reaction center of the met-myoglobin from sperm whale and horse muscles. Our results show the lost of EPR paramagnetism of these molecules in low hydration suggesting valence changes from ferric to ferrous state as well as high to low spin states of the ferric forms. These results are quantified in terms of different paramagnetic species by double integration of the EPR spectra corrected by g values and population effect due zero field splitting and temperature. Mossbauer measurements were taken with the samples in different degree of hydration, pure and reacted with NO nitric oxide gas. Interpretation of these Mossbauer spectra is in progress. |
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Palavras-Chave: |
Dehydration; EPR; Met-myoglobin; Molecules; Mossbauer. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01851naa a2200277 a 4500
001 1026695
005 2010-03-02
008 1992 bl --- 0-- u #d
100 1 $aNASCIMENTO, O. R.
245 $aEquilibrium of conformational states in met-myoglobin molecules as a function of dehydration level$ban EPR and Mossbauer studies.
260 $c1992
300 $ap.59.
520 $aProtein have been shown to be dynamics molecules and exist in several conformational states and substates. The equilibrium between these conformations depends of different factors and has an important role in biological behavior. In this work the role of hydration degree is investigated in the spin and valence equilibria of the iron reaction center of the met-myoglobin from sperm whale and horse muscles. Our results show the lost of EPR paramagnetism of these molecules in low hydration suggesting valence changes from ferric to ferrous state as well as high to low spin states of the ferric forms. These results are quantified in terms of different paramagnetic species by double integration of the EPR spectra corrected by g values and population effect due zero field splitting and temperature. Mossbauer measurements were taken with the samples in different degree of hydration, pure and reacted with NO nitric oxide gas. Interpretation of these Mossbauer spectra is in progress.
653 $aDehydration
653 $aEPR
653 $aMet-myoglobin
653 $aMolecules
653 $aMossbauer
700 1 $aMARTIN-NETO, L.
700 1 $aTABAK, M.
700 1 $aWAJJNBERG, E.
700 1 $aBEMSKI, G.
700 1 $aWINKLER, H.
700 1 $aBILL, E.
700 1 $aTRAUTWEIN, A. X.
773 $tIn: ENCONTRO NACIONAL DE FISICA DA MATERIA CONDENSADA, 15., maio 1992, Caxambu, MG. Programa e resumos... Sao Paulo: Sociedade Brasileira de Fisica, 1992.
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