Nitrosyl- versus nitroxyl-cobalamin?
نویسندگان
چکیده
منابع مشابه
A dinitrosyliron complex within the homoleptic Fe(NO)4 anion: NO as nitroxyl and nitrosyl ligands within a single structure.
Nitrosylation of the chelate-thiolate-containing dinitrosyliron complex (DNIC) [(S(CH(2))(3)S)Fe(NO)(2)](-) triggers nitric oxide (NO) activation to generate the homoleptic nitrosyl {Fe(NO)(2)}(9) DNIC [Fe(NO)(4)](-) (1) made up of two nitroxyls (or two NO anions) attached to a delocalized {Fe(NO)(2)}(9) motif. The significantly longer N3-O3/N4-O4 [1.380(12) and 1.280(12) Å] and Fe1-N3/Fe1-N4 [...
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Hydride attack at a ferric heme-NO to give an Fe-HNO intermediate is a key step in the global N-cycle. We demonstrate differential reactivity when six- and five-coordinate ferric heme-NO models react with hydride. Although Fe-HNO formation is thermodynamically favored from this reaction, Fe-H formation is kinetically favored for the 5C case.
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This work was presented in part at the meeting ofthe American Society of Human Genetics, San Diego, Calif., October 1977. Dr. Mellman and Dr. Willard are recipients of traineeships from the National Institutes of Health (T01-GM 02299). Dr. Mellman's present address is Laboratory of Cellular Physiology and Immunology, The Rockefeller University, New York 10021. Received for publication 18 May 19...
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Reaction of 1,2,2,6,6-penatamethyl-piperidine-4-one (A) with ketone (B) and NH 4 Cl in DMSO at 55 O C for 5 hrs (RXN 1). Multiple trials using different equivalents of ketones and NH 4 Cl, temperatures, and dilutions were attempted.
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The development of chemistry of free nitroxyl radicals puts a number of new problems before the researchers. It is possible to subdivide nitroxyl radicals into two independent groups: nitroxides and iminoxyls. due to pronounced difference in their reactivity. To specify the concept of stability of a substance it is necessary to reconsider the ideas concerning the discovery of the first stable f...
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ژورنال
عنوان ژورنال: JBIC Journal of Biological Inorganic Chemistry
سال: 2019
ISSN: 0949-8257,1432-1327
DOI: 10.1007/s00775-019-01658-1