Ontology highlight
ABSTRACT:
SUBMITTER: Dereven'kov IA
PROVIDER: S-EPMC3813607 | biostudies-literature | 2013 Nov
REPOSITORIES: biostudies-literature
Dereven'kov Ilia A IA Salnikov Denis S DS Makarov Sergei V SV Boss Gerry R GR Koifman Oskar I OI
Dalton transactions (Cambridge, England : 2003) 20131101 43
We studied the kinetics of reactions of cob(I)alamin and cob(I)inamide with thiosulfate, sulfite, and dithionite by UV-Visible (UV-Vis) and stopped-flow spectroscopy. We found that the two Co(I) species were oxidized by these sulfur-containing compounds to Co(II) forms: oxidation by excess thiosulfate leads to penta-coordinate complexes and oxidation by excess sulfite or dithionite leads to hexa-coordinate Co(II)-SO2(-) complexes. The net scheme involves transfer of three electrons in the case o ...[more]