Toward modeling the high chloride, low pH form of sulfite oxidase: K(a)-band ESEEM of equatorial chloro ligands in oxomolybdenum(V) complexes.

Toward modeling the high chloride, low pH form of sulfite oxidase: K(a)-band ESEEM of equatorial chloro ligands in oxomolybdenum(V) complexes. Research Abstract Details 

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Toward modeling the high chloride, low pH form of sulfite oxidase: K(a)-band ESEEM of equatorial chloro ligands in oxomolybdenum(V) complexes. Abstract Text:

Andrei V Astashkin,Eric L Klein,John H Enemark,Andrei V Astashkin,Eric L Klein,John H Enemark,Andrei V Astashkin,Eric L Klein,John H Enemark,

Two oxomolybdenum(V) complexes, (dttd)MoOCl and [(bdt)MoOCl(2)](-) (where dttd=2,3:8,9-dibenzo-1,4,7,10-tetrathiadecane and bdt=1,2-benzenedithiolate), which contain one or two equatorial chloro ligands, respectively, were studied by electron spin echo envelope modulation (ESEEM) spectroscopy in the microwave K(a)-band ( approximately 29GHz). The ESEEM amplitude from the chloro ligands in both compounds is significantly greater than that tentatively attributed to chloride in the vicinity of the oxomolybdenum active site in the high chloride, low-pH (lpH) form of sulfite oxidase (SO). Thus, these ESEEM results rule out equatorial coordination of chloride in the enzyme, although the possibility for a weakly bound chloride in the trans axial position or nearby non-coordinated chloride(s) remains for lpH SO in solution.

Toward modeling the high chloride, low pH form of sulfite oxidase: K(a)-band ESEEM of equatorial chloro ligands in oxomolybdenum(V) complexes. Publishing Authors By Initials

AV Astashkin,EL Klein,JH Enemark,AV Astashkin,EL Klein,JH Enemark,AV Astashkin,EL Klein,JH Enemark,

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Toward modeling the high chloride, low pH form of sulfite oxidase: K(a)-band ESEEM of equatorial chloro ligands in oxomolybdenum(V) complexes. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Journal of inorganic biochemistry

VOLUME: 101

Page Numbers: 1623-9

Journal Abbreviation: J. Inorg. Biochem.

ISSN: 0162-0134

DAY: 12

MONTH: 06

YEAR: 2007

Toward modeling the high chloride, low pH form of sulfite oxidase: K(a)-band ESEEM of equatorial chloro ligands in oxomolybdenum(V) complexes. Information

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LANGUAGE: eng

NlmUniqueID: 7905788

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Grant and Affiliation Information for Toward modeling the high chloride, low pH form of sulfite oxidase: K(a)-band ESEEM of equatorial chloro ligands in oxomolybdenum(V) complexes.

AFFILIATION: Department of Chemistry, The University of Arizona, Tucson, AZ 85721, United States.

Country: United States

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MEDLINETA: J Inorg Biochem

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