Linked Life Data

10966739

Source:http://linkedlifedata.com/resource/pubmed/id/10966739

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
17
pubmed:dateCreated
2000-9-21
pubmed:abstractText
In previous work, we have obtained potent protein kinase C (PK-C) ligands with low-namomolar binding affinities by constructing diacylglycerol (DAG) mimetics in which the sn-2 carbonyl of DAG was constrained into a lactone ring. An additional structural element that helped achieve high binding affinity was the presence of branched acyl or alpha-alkylidene chains. In the present study, the effects of similarly branched chains on a different lactone system, where the lactone carbonyl is now equivalent to the sn-1 carbonyl of DAG, are investigated. In this new lactone template, the two chiral centers must have the S-configuration for enzyme recognition. As with the sn-2 DAG lactones, the branched chains were designed to optimize van der Waals contacts with a group of conserved hydrophobic amino acids located on the rim of the C1 domain of PK-C. The acyl and alpha-alkylidene chains were also designed to be lipophilically equivalent (8 carbons each). Eight new compounds (7-14) representing all possible combinations of linear and branched acyl and alpha-alkylidene were synthesized and evaluated. The sn-1 DAG lactones were less effective as PK-C ligands than the sn-2 DAG lactones despite having a similar array of linear or branched acyl and alpha-alkylidene chains
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Aug
pubmed:issn
0022-2623
pubmed:author
pubmed:issnType
Print
pubmed:day
24
pubmed:volume
43
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
3209-17
pubmed:dateRevised
2007-11-15
pubmed:meshHeading
pubmed:year
2000
pubmed:articleTitle
Conformationally constrained analogues of diacylglycerol (DAG). 17. Contrast between sn-1 and sn-2 DAG lactones in binding to protein kinase C.
pubmed:affiliation
Laboratories of Medicinal Chemistry and of Cellular Carcinogenesis and Tumor Promotion, Division of Basic Sciences, National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892, USA.
pubmed:publicationType
Journal Article