sub:provenance {
  beldoc: dce:description "Approximately 61,000 statements." ;
    dce:rights "Copyright (c) 2011-2012, Selventa. All rights reserved." ;
    dce:title "BEL Framework Large Corpus Document" ;
    pav:authoredBy sub:_6 ;
    pav:version "20131211" .
  sub:_5 prov:value "Overlapping putative promoter regions of human PGF gene encompassing 2-1.5 kb were cloned into reporter vectors and co-transfected into trophoblast and nontrophoblast cell lines. Promoter activity generated by a 2-1.5-kb clone was significantly higher in trophoblasts than in nontrophoblasts. Selective deletion mutants showed that a clone encompassing the PGF (2-828/++34) region generated promoter activity similar to the 2-1.5-kb region in the trophoblast. However, deletion of another 131 bp from this subclone (2-698/++34) resulted in significantly less promoter activity in the trophoblast. The (2-828/2-698) region significantly enhanced activity of a minimal promoter construct in trophoblast but not in nontrophoblast cells, suggesting that this region contributes to regulating PGF transcription in the trophoblast. Site-directed mutagenesis of a glial cell missing 1 (GCM1) motif in the 131-bp region significantly decreased enhancer activity in the trophoblast. Furthermore, overexpression of GCM1 significantly increased PGF 2-1.5-kb promoter activity and PGF mRNA expression in trophoblast and nontrophoblast cells. " ;
    prov:wasQuotedFrom pubmed:18160678 .
  sub:_6 rdfs:label "Selventa" .
  sub:assertion prov:hadPrimarySource pubmed:18160678 ;
    prov:wasDerivedFrom beldoc: , sub:_5 .
}