Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
10
pubmed:dateCreated
2007-4-10
pubmed:abstractText
Xanthine oxidase (XO) is a key enzyme which can catalyze xanthine to uric acid causing hyperuricemia in humans. By using the fractionation technique and inhibitory activity assay, an active compound that prevents XO from reacting with xanthine was isolated from wheat leaf. It was identified by the Mass and NMR as 6-aminopurine (adenine). A structure-activity study based on 6-aminopurine was conducted. The inhibition of XO activity by 6-aminopurine (IC(50)=10.89+/-0.13 microM) and its analogues was compared with that by allopurinol (IC(50)=7.82+/-0.12 microM). Among these analogues, 2-chloro-6(methylamino)purine (IC(50)=10.19+/-0.10 microM) and 4-aminopyrazolo[3,4-d] pyrimidine (IC(50)=30.26+/-0.23 microM) were found to be potent inhibitors of XO. Kinetics study showed that 2-chloro-6(methylamino)purine is non-competitive, while 4-aminopyrazolo[3,4-d]pyrimidine is competitive against XO.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
0968-0896
pubmed:author
pubmed:issnType
Print
pubmed:day
15
pubmed:volume
15
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
3450-6
pubmed:dateRevised
2007-11-15
pubmed:meshHeading
pubmed:year
2007
pubmed:articleTitle
The screening and characterization of 6-aminopurine-based xanthine oxidase inhibitors.
pubmed:affiliation
Institute of Biological Chemistry and the Genomics Research Center, Academia Sinica, Nankang, Taipei 115, Taiwan.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't