WIF-1 protein critically binds to WNT protein, inhibits its activity and regulates the WNT signaling pathway. In addition to its inhibitory role, WIF-1 may also contribute to mesoderm segmentation, implicating its role in embryonic development. WIF-1 Protein, Human (HEK293, His) is the recombinant human-derived WIF-1 protein, expressed by HEK293 , with C-6*His labeled tag.