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Titolo:
PARTICIPATION OF MN(II) IN THE CATALYSIS OF LACCASE, MANGANESE PEROXIDASE AND LIGNIN PEROXIDASE FROM PHLEBIA-RADIATA
Autore:
LUNDELL T; HATAKKA A;
Indirizzi:
HELSINKI UNIV,DEPT APPL CHEM & MICROBIOL,DIV MICROBIOL,POB 27 SF-00014 VIIKKI FINLAND
Titolo Testata:
FEBS letters
fascicolo: 3, volume: 348, anno: 1994,
pagine: 291 - 296
SICI:
0014-5793(1994)348:3<291:POMITC>2.0.ZU;2-C
Fonte:
ISI
Lingua:
ENG
Soggetto:
WHITE-ROT FUNGI; PHANEROCHAETE-CHRYSOSPORIUM; MODIFYING ENZYMES; STEADY-STATE; VERATRYL ALCOHOL; OXIDATION; DEGRADATION; BIODEGRADATION; METHOXYBENZENES; ACID;
Keywords:
LIGNIN DEGRADATION; WHITE-ROT FUNGUS; ENZYMATIC OXIDATION; PEROXIDASE; LACCASE; MANGANESE(II));
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
31
Recensione:
Indirizzi per estratti:
Citazione:
T. Lundell e A. Hatakka, "PARTICIPATION OF MN(II) IN THE CATALYSIS OF LACCASE, MANGANESE PEROXIDASE AND LIGNIN PEROXIDASE FROM PHLEBIA-RADIATA", FEBS letters, 348(3), 1994, pp. 291-296

Abstract

Oxidation capacities of laccase, manganese peroxidase (MnP) and lignin peroxidase (LiP) from Phlebia radiata were compared using non-phenolic (veratryl alcohol and ABTS) and phenolic (syringaldazine, vanillalacetone and Phenol red) compounds as reducing substrates. The effect ofMn(II) on enzyme reactions was also studied. Highest specific activities were recorded with laccase in the oxidation of phenolic compounds or ABTS and irrespective of Mn(II) concentration. LiP and MnP oxidizedall these substrates but only the catalysis of MnP was dependent uponMn(II). Only LiP clearly oxidized veratryl alcohol. However, Mn(II) interfered with this reaction by repressing veratraldehyde formation. These results point to multiple participation of manganese ions, eitheras a reducing (Mn(II)) or oxidizing (Mn(III)) agent in the enzymatic reactions.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/11/20 alle ore 00:47:35