Noncanonical usage of stop codons in ciliates expands proteins with structurally flexible Q-rich motifs oleh Chi-Ning Chuang, Hou-Cheng Liu, Tai-Ting Woo, Ju-Lan Chao, Chiung-Ya Chen, Hisao-Tang Hu, Yi-Ping Hsueh, Ting-Fang Wang