Literature DB >> 15643856

17O ESEEM evidence for exchange of the axial oxo ligand in the molybdenum center of the high pH form of sulfite oxidase.

Andrei V Astashkin1, Changjian Feng, Arnold M Raitsimring, John H Enemark.   

Abstract

A 17O ESEEM investigation of the high pH form of chicken sulfite oxidase using hyperfine sublevel correlation (HYSCORE) spectroscopy at 29.25 GHz has revealed a new type of exchangeable 17O ligand that is characterized by a significantly smaller hyperfine interaction ( approximately 5 MHz) than that previously detected by CW EPR. This new type of exchangeable oxygen ligand is assigned to the axial oxo group of the Mo(V) center.

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Year:  2005        PMID： 15643856     DOI： 10.1021/ja0461466

Source DB:  PubMed          Journal:  J Am Chem Soc        ISSN： 0002-7863            Impact factor:   15.419


  16 in total

1.  HIGH-RESOLUTION EPR SPECTROSCOPY OF MO ENZYMES. SULFITE OXIDASES: STRUCTURAL AND FUNCTIONAL IMPLICATIONS.

Authors:  John H Enemark; A V Astashkin; A M Raitsimring
Journal:  Biol Magn Reson       Date:  2010-01-01

2.  Molybdenum enzymes in higher organisms.

Authors:  Russ Hille; Takeshi Nishino; Florian Bittner
Journal:  Coord Chem Rev       Date:  2011-05-01       Impact factor: 22.315

3.  Applications of pulsed EPR spectroscopy to structural studies of sulfite oxidizing enzymes().

Authors:  Eric L Klein; Andrei V Astashkin; Arnold M Raitsimring; John H Enemark
Journal:  Coord Chem Rev       Date:  2013-01-01       Impact factor: 22.315

Review 4.  The mononuclear molybdenum enzymes.

Authors:  Russ Hille; James Hall; Partha Basu
Journal:  Chem Rev       Date:  2014-01-28       Impact factor: 60.622

5.  Direct demonstration of the presence of coordinated sulfate in the reaction pathway of Arabidopsis thaliana sulfite oxidase using 33S labeling and ESEEM spectroscopy.

Authors:  Andrei V Astashkin; Kayunta Johnson-Winters; Eric L Klein; Robert S Byrne; Russ Hille; Arnold M Raitsimring; John H Enemark
Journal:  J Am Chem Soc       Date:  2007-11-06       Impact factor: 15.419

6.  Pulsed EPR investigations of the Mo(V) centers of the R55Q and R55M variants of sulfite dehydrogenase from Starkeya novella.

Authors:  Trevor D Rapson; Andrei V Astashkin; Kayunta Johnson-Winters; Paul V Bernhardt; Ulrike Kappler; Arnold M Raitsimring; John H Enemark
Journal:  J Biol Inorg Chem       Date:  2010-01-19       Impact factor: 3.358

Review 7.  Sulfite oxidizing enzymes.

Authors:  Changjian Feng; Gordon Tollin; John H Enemark
Journal:  Biochim Biophys Acta       Date:  2007-03-20

8.  Probing the role of a conserved salt bridge in the intramolecular electron transfer kinetics of human sulfite oxidase.

Authors:  Kayunta Johnson-Winters; Amanda C Davis; Anna R Arnold; Robert E Berry; Gordon Tollin; John H Enemark
Journal:  J Biol Inorg Chem       Date:  2013-06-19       Impact factor: 3.358

9.  Direct detection and characterization of chloride in the active site of the low-pH form of sulfite oxidase using electron spin echo envelope modulation spectroscopy, isotopic labeling, and density functional theory calculations.

Authors:  Eric L Klein; Andrei V Astashkin; Dmitry Ganyushin; Christoph Riplinger; Kayunta Johnson-Winters; Frank Neese; John H Enemark
Journal:  Inorg Chem       Date:  2009-06-01       Impact factor: 5.165

10.  Exchangeable oxygens in the vicinity of the molybdenum center of the high-pH form of sulfite oxidase and sulfite dehydrogenase.

Authors:  Andrei V Astashkin; Eric L Klein; Dmitry Ganyushin; Kayunta Johnson-Winters; Frank Neese; Ulrike Kappler; John H Enemark
Journal:  Phys Chem Chem Phys       Date:  2009-07-13       Impact factor: 3.676
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