scholarly journals [NiFe] and [FeS] Cofactors in the Membrane-Bound Hydrogenase ofRalstonia eutrophaInvestigated by X-ray Absorption Spectroscopy: Insights into O2-Tolerant H2Cleavage

Biochemistry ◽  
2011 ◽  
Vol 50 (26) ◽  
pp. 5858-5869 ◽  
Author(s):  
Johannes Fritsch ◽  
Simone Löscher ◽  
Oliver Sanganas ◽  
Elisabeth Siebert ◽  
Ingo Zebger ◽  
...  
Keyword(s):  
Absorption Spectroscopy ◽  
X Ray ◽  
Membrane Bound ◽  
X Ray Absorption

Oriented x-ray absorption spectroscopy of membrane bound metalloproteins

1989 ◽  
Vol 158 (1-3) ◽  
pp. 81-83 ◽  
Author(s):  
Graham N. George ◽  
Roger C. Prince ◽  
Terrence G. Frey ◽  
Stephen P. Cramer
Keyword(s):  
Absorption Spectroscopy ◽  
X Ray ◽  
Membrane Bound ◽  
X Ray Absorption

scholarly journals Structural investigation of the molybdenum site of the periplasmic nitrate reductase from Thiosphaera pantotropha by X-ray absorption spectroscopy

1996 ◽  
Vol 317 (2) ◽  
pp. 557-563 ◽  
Author(s):  
Brian BENNETT ◽  
John M. CHARNOCK ◽  
Heather J. SEARS ◽  
Ben C. BERKS ◽  
Andrew J. THOMSON ◽  
...  
Keyword(s):  
Nitrate Reductase ◽  
Absorption Spectroscopy ◽  
X Ray ◽  
Periplasmic Nitrate Reductase ◽  
Thiosphaera Pantotropha ◽  
Treated Sample ◽  
Membrane Bound ◽  
X Ray Absorption ◽  
Best Fit ◽  
Respiratory Nitrate Reductase

The molybdenum centre of the periplasmic respiratory nitrate reductase from the denitrifying bacterium Thiosphaera pantotropha has been probed using molybdenum K-edge X-ray absorption spectroscopy. The optimum fit of the Mo(VI) EXAFS suggests two =O, three –S– and either a fourth –S– or an –O–/–N– as molybdenum ligands in the ferricyanide-oxidized enzyme. Three of the –S– ligands are proposed to be the two sulphur atoms of the molybdopterin dithiolene group and Cys-181. Comparison of the EXAFS of the ferricyanide-oxidized enzyme with that of a nitrate-treated sample containing 30% Mo(V) suggests that the Mo(VI) → Mo(V) reduction is accompanied by conversion of one =O to –O–. The best fit to the Mo(IV) EXAFS of dithionite-reduced enzyme was obtained using one =O, one –O– and four –S–/–Cl ligands. The periplasmic nitrate reductase molybdenum co-ordination environment in both the Mo(VI) and Mo(IV) oxidation states is distinct from that found in the membrane-bound respiratory nitrate reductase.

X-RAY ABSORPTION SPECTROSCOPY STUDY OF Cu-BASED METHANOL CATALYSTS. 2. REDUCED STATE

1986 ◽  
Vol 47 (C8) ◽  
pp. C8-237-C8-242 ◽  
Author(s):  
B. S. CLAUSEN ◽  
B. LENGELER ◽  
B. S. RASMUSSEN ◽  
W. NIEMANN ◽  
H. TOPSØE
Keyword(s):  
Absorption Spectroscopy ◽  
Spectroscopy Study ◽  
X Ray ◽  
X Ray Absorption ◽  
Reduced State

GAS PHASE X-RAY ABSORPTION SPECTROSCOPY WITH AN ELECTRON YIELD DETECTOR

1986 ◽  
Vol 47 (C8) ◽  
pp. C8-149-C8-151
Author(s):  
F. W. LYTLE ◽  
R. B. GREEGOR ◽  
G. H. VIA ◽  
J. M. BROWN ◽  
G. MEITZNER
Keyword(s):  
Gas Phase ◽  
Absorption Spectroscopy ◽  
X Ray ◽  
Electron Yield ◽  
X Ray Absorption

THE FORMATION, STRUCTURE AND DISSOLUTION OF THE FERRITIN IRON CORE STUDIED BY X-RAY ABSORPTION SPECTROSCOPY

1986 ◽  
Vol 47 (C8) ◽  
pp. C8-1155-C8-1157
Author(s):  
E. C. THEIL ◽  
D. E. SAYERS ◽  
C. Y. YANG ◽  
A. FONTAINE ◽  
E. DARTYGE
Keyword(s):  
Absorption Spectroscopy ◽  
Iron Core ◽  
X Ray ◽  
Ferritin Iron ◽  
X Ray Absorption

STOPPED-FLOW X-RAY ABSORPTION SPECTROSCOPY IN DISPERSIVE MODE

1986 ◽  
Vol 47 (C8) ◽  
pp. C8-555-C8-561 ◽  
Author(s):  
S. SAIGO ◽  
H. OYANAGI ◽  
T. MATSUSHITA ◽  
H. HASHIMOTO ◽  
N. YOSHIDA ◽  
...  
Keyword(s):  
Absorption Spectroscopy ◽  
Stopped Flow ◽  
X Ray ◽  
X Ray Absorption
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