Linked Life Data

7782928

Source:http://linkedlifedata.com/resource/pubmed/id/7782928

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
6 Suppl
pubmed:dateCreated
1995-7-18
pubmed:abstractText
Recent studies have identified a heterodimer of the vitamin D receptor (VDR) and the retinoid X receptor (RXR) as the active complex for mediating positive transcriptional effects of 1,25-dihydroxyvitamin D3 [1,25(OH)2D3], the active hormonal form of vitamin D. The VDR-RXR heterodimer has been shown to bind to direct repeat vitamin D-responsive elements (VDREs) upstream of positively controlled genes in the target tissues for vitamin D, including bone (osteocalcin, osteopontin, and beta 3 integrin), kidney (24-hydroxylase) and intestine (calbindin). Residues that participate in heterodimer formation have been identified in the C-terminal hormone-binding domain by analysis of VDR mutants. The role of the 1,25(OH)2D3 ligand in transcriptional activation by the VDR-RXR heterodimer is not entirely clear, but studies of two natural VDR mutants suggest that the binding of both hormone and RXR are required to induce a receptor conformation that is competent to activate transcription. A final level of complexity is added by recent observations that VDR is modified by phosphorylation. Thus, the VDR-mediated action of 1,25(OH)2D3 is now known to involve multiple factors that may provide a conceptual basis for future understanding of the tissue-specific genomic effects of 1,25(OH)2D3.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jun
pubmed:issn
0022-3166
pubmed:author
pubmed:issnType
Print
pubmed:volume
125
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
1690S-1694S
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed:year
1995
pubmed:articleTitle
Genomic actions of 1,25-dihydroxyvitamin D3.
pubmed:affiliation
Department of Biochemistry, University of Arizona College of Medicine, Tucson 85724, USA.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Review