Fig. 2.
TAZ and YAP play important roles in cardiac ANF expression. (A) Structure of mouse TAZ and YAP proteins. WW, WW1, and WW2, WW domain. TAZ and YAP share WW domain(s), a coiled-coil motif, and a PDZ-binding motif. YAP contains a proline-rich domain and an SH3-binding motif. (B) YAP activates TBX5-dependent ANF-luciferase expression in a dose-dependent manner. TBX5, 10 ng; YAP, 5–200 ng. Basal luciferase activity without TBX5 and YAP expression was given a value of 1. (C) siRNA against TAZ or YAP reduced ANF-luciferase activity in cardiac myocytes. Primary neonatal mouse cardiac myocytes were cotransfected with siRNA and ANF-luciferase plasmid. siRNA, control (siRNA without known homology with mammalian sequences) (Qiagen); TAZ-site #1 and -site #2, against mouse TAZ; YAP-site #1 and -site #2, against mouse YAP. Luciferase activity with control siRNA cotransfection was given a value of 100%.