Drosophila PIWI associates with chromatin and interacts directly with HP1aBrower-Toland, Brent, Findley, Seth D., Jiang, Ling, Liu, Li, Yin, Hang, Dus, Monica, Zhou, Pei, Elgin, Sarah C.R. +1 more·2007·Genes & DevelopmentDOI 10.1101/gad.1564307