passages.id: split_8_test_905_passage
passages.type: progene_text
passages.text: Two models have been proposed to explain the Wnt - like activity of cnxPg : 1) that cnxPg inhibits the machinery involved in the turnover of cytosolic beta-catenin , which then accumulates and inhibits maternal XTCF3 , and 2 ) that cnxPg directly acts to inhibit XTCF3 activity .