Evidence for a membrane-bound pyrroloquinoline quinone-linked glucose dehydrogenase in Acetobacter diazotrophicus

Acetobacter diazotrophicus possesses a pyrroloquinoline quinone-linked glucose dehydrogenase (PQQ-GDH). The enzyme seemingly belongs to the type II PQQ-GDH enzymes and, at least under the culture conditions tested, the organism synthesizes enough PQQ to saturate the apo-enzyme. The synthesis of this...

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Guardado en:
Detalles Bibliográficos
Autores principales: Galar, María Lina, Boiardi, José Luis
Formato: Articulo
Lenguaje:Inglés
Publicado: 1995
Materias:
Biología
Glucose
Enzyme
Culture Condition
Extra Energy
Glucose Dehydrogenase
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/142735
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
Descripción
Sumario:Acetobacter diazotrophicus possesses a pyrroloquinoline quinone-linked glucose dehydrogenase (PQQ-GDH). The enzyme seemingly belongs to the type II PQQ-GDH enzymes and, at least under the culture conditions tested, the organism synthesizes enough PQQ to saturate the apo-enzyme. The synthesis of this enzyme is stimulated when the organism is grown under N₂-fixing conditions. It is proposed that this enzyme may play an important role in providing extra energy in N₂-fixing cells.

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