Q‑Site Occupancy Defines Heme Heterogeneity in Escherichia coli Nitrate Reductase A (NarGHI)

The membrane subunit (NarI) of Escherichia coli nitrate reductase A (NarGHI) contains two b-type hemes, both of which are the highly anisotropic low-spin type. Heme b D is distal to NarGH and constitutes part of the quinone binding and oxidation site (Q-site) through the axially coordinating histidi...

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Veröffentlicht in:	Biochemistry (Easton) 2014-03, Vol.53 (11), p.1733-1741
Hauptverfasser:	Fedor, Justin G., Rothery, Richard A., Giraldi, Karissa S., Weiner, Joel H.
Format:	Artikel
Sprache:	eng
Schlagworte:	Benzoquinones - chemistry Benzoquinones - metabolism Binding Sites - physiology electrochemistry electron paramagnetic resonance spectroscopy Electron Spin Resonance Spectroscopy Escherichia coli Escherichia coli - enzymology Escherichia coli Proteins - chemistry Escherichia coli Proteins - metabolism Genetic Heterogeneity heme Heme - chemistry Heme - metabolism hydrogen bonding nitrate reductase Nitrate Reductase - chemistry Nitrate Reductase - metabolism oxidation propionic acid Protein Binding
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