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 "1.4" .
  sub:_4 dce:identifier "Landes Bioscience - Maspin Gene Expression" ;
    dce:title "Landes Bioscience - Maspin Gene Expression" ;
    dce:type "Other" .
  sub:_5 prov:value "Deletion analysis showed that deletion of an Ets site located at the region from 112 bp to 90 bp, abolished completely maspin activity, suggesting that this Ets was the major positivecis element within 1 kb responsible for up-regulation of maspin in normal mammary epithelial cells. Further analysis confirmed that this Ets site cooperated with a downstream Ap1 site for synergistic activation in normal breast cells; however this cooperative transactivation between Ets and Ap1 was lost in primary breast tumor 21NT cells." ;
    prov:wasQuotedFrom sub:_4 .
  sub:_6 rdfs:label "Selventa" .
  sub:assertion prov:hadPrimarySource sub:_4 ;
    prov:wasDerivedFrom beldoc: , sub:_5 .
}