Cheng-Yu Tsai, Shean-Jaw Chiou, Huey-Jiun Ko, Yu-Fan Cheng, Sin-Yi Lin, Yun-Ling Lai, Chen-Yen Lin, Chihuei Wang, Jiin-Tsuey Cheng, Hsin-Fu Liu, Aij-Li Kwan, Joon-Khim Loh, Yi-Ren Hong
We previously revealed the origin of mammalian simple-type glycogen synthase kinase interaction protein (GSKIP), which served as a scavenger and a competitor in the Wnt signaling pathway during evolution. In this study, we investigated the conserved and nonconserved regions of the composite-type GSKIP by utilizing bioinformatics tools, site-directed mutagenesis, and yeast two-hybrid methods. The regions were denoted as the pre-GSK3β binding site, which is located at the front of GSK3β-binding sites. Our data demonstrated that clustered mitochondria protein 1 (CLU1), a type of composite-type GSKIP that exists in the mitochondria of all eukaryotic organisms, possesses the protein known as domain of unknown function 727 (DUF727), with a pre-GSK3β-binding site and a mutant GSK3β-binding flanking region...
2022: PloS One