PMID:12686131

Citation	Yamada, M, Elias, MD, Matsushita, K, Migita, CT and Adachi, O (2003) Escherichia coli PQQ-containing quinoprotein glucose dehydrogenase: its structure comparison with other quinoproteins. Biochim. Biophys. Acta 1647:185-92
Abstract	Membrane-bound glucose dehydrogenase (mGDH) in Escherichia coli is one of the pivotal pyrroloquinoline quinone (PQQ)-containing quinoproteins coupled with the respiratory chain in the periplasmic oxidation of alcohols and sugars in Gram-negative bacteria. We compared mGDH with other PQQ-dependent quinoproteins in molecular structure and attempted to trace their evolutionary process. We also review the role of residues crucial for the catalytic reaction or for interacting with PQQ and discuss the functions of two distinct domains, radical formation in PQQ, and the presumed existence of bound quinone in mGDH.
Links	PubMed
Keywords	Binding Sites; Escherichia coli/enzymology; Escherichia coli Proteins/chemistry; Glucose Dehydrogenases/chemistry; Models, Molecular; PQQ Cofactor; Protein Subunits; Quinolones/chemistry; Quinones/chemistry
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