Linked Life Data

18652479

Source:http://linkedlifedata.com/resource/pubmed/id/18652479

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
33
pubmed:dateCreated
2008-8-12
pubmed:abstractText
This work describes for the first time the identification of a reaction intermediate, C4a-hydroperoxyflavin, during the oxidative half-reaction of a flavoprotein oxidase, pyranose 2-oxidase (P2O) from Trametes multicolor, by using rapid kinetics. The reduced P2O reacted with oxygen with a forward rate constant of 5.8 x 10 (4) M (-1) s (-1) and a reverse rate constant of 2 s (-1), resulting in the formation of a C4a-hydroperoxyflavin intermediate which decayed with a rate constant of 18 s (-1). The absorption spectrum of the intermediate resembled the spectra of flavin-dependent monooxygenases. A hydrophobic cavity formed at the re side of the flavin ring in the closed state structure of P2O may help in stabilizing the intermediate.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Aug
pubmed:issn
1520-4995
pubmed:author
pubmed:issnType
Electronic
pubmed:day
19
pubmed:volume
47
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
8485-90
pubmed:dateRevised
2011-4-6
pubmed:meshHeading
pubmed:year
2008
pubmed:articleTitle
Detection of a C4a-hydroperoxyflavin intermediate in the reaction of a flavoprotein oxidase.
pubmed:affiliation
Department of Biochemistry, Faculty of Dentistry, Chulalongkorn University, Henri-Dunant Road, Patumwan, Bangkok 10300, Thailand.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't