简介：Xenopusorganizerspecificgenenogginpossessesnearlyallthecharacteresticpropertiesoftheactionoforganizertospecifytheembryonicbodyacis.Toanalyzehowthematernalinheritedfactorscontrolitsexpressionpattern,weclonedthe5'regulatoryregionofnoggingene.The1.5kbupstreamsequensecoulddirectreportergenetoexpressinvivoanddatafromdeletionanalysisindicatedthata229basepairfragmetisessentialforactivatingnogginexpression.WefurtherdemonstratedthattheresponseelementswithinthisregulatoryregionwereindeedunderthecontrolofgrowthfactoractivinandWntsignalingpathwaycomponents.
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