Zobrazeno 1 - 10 of 82 pro vyhledávání: '"Laura, Morpurgo"'
1
Inactivation of copper-containing amine oxidases by turnover products
Autor: S. Nocera, Rodolfo Federico, Bruno Mondovi, Laura Morpurgo, Paola Pietrangeli
Publikováno v: European Journal of Biochemistry. 271:146-152
For bovine serum amine oxidase, two different mechanisms of substrate-induced inactivation have been proposed. One consists of a slow oxidation by H2O2 of a conserved residue in the reduced enzyme after the fast turnover phase [Pietrangeli, P., Nocer
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::597de4cab1d9a967f6dd75793dbd449e
https://doi.org/10.1046/j.1432-1033.2003.03913.x
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2
Some new functions of amine oxidases
Autor: Olivia Befani, Emanuela Masini, Bruno Mondovi, Paola Pietrangeli, Laura Morpurgo, Rodolfo Federico, Mircea Alexandru Mateescu, Enzo Agostinelli
Publikováno v: InflammoPharmacology. 11:155-163
Two contrasting topics are examined in this account: the protective actions of amine oxidases (AOs) resulting from the elimination and/or modulation of the levels of polyamines and some biogenic amines, such as histamine, in anaphylactic shock and th
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6361b26167c879154f7d9c8576d9ab48
https://doi.org/10.1163/156856003765764326
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4
The oxidation and reduction reactions of bovine serum amine oxidase
Autor: Laura Morpurgo, Bruno Mondovi, Andrea Bellelli, Enzo Agostinelli
Publikováno v: European Journal of Biochemistry. 267:3264-3269
The presteady-state and steady-state kinetics of bovine serum amine oxidase (BSAO) were analyzed by stopped-flow transient spectroscopy. A simplified model of the catalytic cycle was found to describe the experimental data and the rate constants of t
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a693d908c8e24a9e01bfbf805b7ee326
https://doi.org/10.1046/j.1432-1327.2000.01351.x
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5
Stability of Japanese-lacquer-tree (Rhus vernicifera) laccase to thermal and chemical denaturation: comparison with ascorbate oxidase
Autor: Enzo Agostinelli, Laura Cervoni, Laura Morpurgo, Anna Giartosio
Publikováno v: Biochemical Journal. 306:697-702
The thermal denaturation of laccase from the Japanese lacquer tree (Rhus vernicifera) was studied by differential scanning calorimetry. The endotherms of holo-laccase, type 2-Cu-depleted laccase and apo-laccase were deconvoluted into two independent
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::99cdce3dc91dea9cc390e6331e9bfd7d
https://doi.org/10.1042/bj3060697
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6
AM1 studies of hydrogen bonded adducts between 2,5-dihydroxy-p-quinone and N-bases
Autor: Giorgio Morpurgo, Mario Bossa, Laura Morpurgo
Publikováno v: Journal of Molecular Structure: THEOCHEM. 330:395-401
Semiempirical AM1 calculations were used to optimize the geometry of the adducts formed by 2,5-dihydroxy- p quinone (DH p Q) with substituted pyridines or imidazole. Hydrogen bond formation was seen to be responsible for the stability of the adducts.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::86cc912a29b9799a179a050ac69efec8
https://doi.org/10.1016/0166-1280(94)03867-k
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7
Lathyrus cicera copper amine oxidase reactions with tryptamine
Autor: Andrea Bellelli, Bruno Mondovi, Paola Fattibene, Laura Morpurgo, Paola Pietrangeli
Publikováno v: Journal of inorganic biochemistry. 109
Lathyrus cicera copper amine oxidase (LCAO) rapidly formed the typical Cu(I)-TPQ semiquinone UV-visible spectrum, identical to that formed by other substrates, upon O(2) exhaustion by turnover with excess tryptamine. A new band at 630 nm formed more
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cd33ba51e2171c1db0aaafd2a3243b8d
https://pubmed.ncbi.nlm.nih.gov/22369770
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8
Role of reduction potentials in copper abstraction from the trinuclear cluster of blue oxidases
Autor: Laura Morpurgo, M.T. Graziani, Luciana Avigliano, Giordana Marcozzi
Publikováno v: Journal of Inorganic Biochemistry. 51:641-647
The crucial point in the selective removal of the type 2 Cu from laccase and ascorbate oxidase by chelating agents was found to be the nature of the reducing agent employed in the reaction. No copper was lost when the reductant was either absent or t
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8d4d12417a5cff4e5c1af6fb642885cc
https://doi.org/10.1016/0162-0134(93)85035-7
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9
Bovine serum amine oxidase: half-site reactivity with phenylhydrazine, semicarbazide, and aromatic hydrazides
Autor: Giorgio Stefancich, Enzo Agostinelli, Bruno Mondovi, Luciana Avigliano, Laura Morpurgo, Romano Silvestri, Marino Artico
Publikováno v: Biochemistry. 31:2615-2621
Aromatic hydrazides of the general formula NH2NHCO(CH2)nC6H4R were covalently bound by bovine serum amine oxidase (BSAO), giving rise to optical and CD absorptions at 350-400 nm. Benzohydrazides (n = 0) reacted slowly, in the ratio of one per dimeric
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a9b3df16128fff462a1b057a84694fb2
https://doi.org/10.1021/bi00124a023
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