Linked Life Data

2930196

Source:http://linkedlifedata.com/resource/pubmed/id/2930196

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1989-5-10
pubmed:abstractText
A modified procedure was used to purify sulfite oxidase (sulfite:O2 oxidoreductase; EC 1.8.3.1) from chicken liver in high yield. The modifications included dialysis of the enzyme against a buffered solution containing sodium molybdate (prior to ion-exchange chromatography), which apparently reconstituted any demolybdo enzyme present in the extract, and phenyl-Sepharose column chromatography. Analysis showed that the purified enzyme contained Mo and heme in a 1.03:1.00 ratio, indicating that the enzyme was prosthetically intact; exogenous heme and other colored proteins were absent from the final pool. Treatment of the sulfite-reduced enzyme with 50 mM cyanide at pH 8.5 resulted in a gradual loss of catalytic activity with a half-life of 19.7 min. Analysis of the cyanide-inactivated enzyme gave a Mo:heme ratio of 1.02:1.00, providing the first direct evidence that the enzyme does not lose molybdenum when inactivated with cyanide. This modified purification procedure provides enzyme in high yield which is well-suited for experiments requiring prosthetically intact enzyme and which is not contaminated with extraneous heme or with other redox active proteins.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
0003-9861
pubmed:author
pubmed:issnType
Print
pubmed:volume
270
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
383-90
pubmed:dateRevised
2009-11-19
pubmed:meshHeading
pubmed:year
1989
pubmed:articleTitle
Purification of prosthetically intact sulfite oxidase from chicken liver using a modified procedure.
pubmed:affiliation
Department of Chemistry, University of Arizona, Tucson 85721.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S.