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:_8 ;
    pav:version "20131211" .
  sub:_7 prov:value "We have shown that the transcription factors E2A and HEB associate with high affinity to these E-boxes. Moreover, we have identified pT alpha as a direct target of E2A-HEB heterodimers in immature thymocytes because they specifically occupy the enhancer in vivo. In these cells, pT alpha mRNA levels are determined by the presence of one or two functional E2A or HEB alleles. Furthermore, E2A/HEB transcriptional activity is repressed by heterodimerization with SCL, a transcription factor that is turned off in differentiating thymocytes exactly at a stage when pT alpha is up-regulated." ;
    prov:wasQuotedFrom pubmed:12566462 .
  sub:_8 rdfs:label "Selventa" .
  sub:assertion prov:hadPrimarySource pubmed:12566462 ;
    prov:wasDerivedFrom beldoc: , sub:_7 .
}