A Smad action turnover switch operated by WW domain readers of a phosphoserine code.
Aragon, E., Goerner, N., Zaromytidou, A.I., Xi, Q., Escobedo, A., Massague, J., Macias, M.J.(2011) Genes Dev 25: 1275-1288
- PubMed: 21685363 
- DOI: 10.1101/gad.2060811
- Primary Citation of Related Structures:  
2LAJ, 2LAW, 2LAX, 2LAY, 2LAZ, 2LB0, 2LB1, 2LB2, 2LB3 - PubMed Abstract: 
When directed to the nucleus by TGF-β or BMP signals, Smad proteins undergo cyclin-dependent kinase 8/9 (CDK8/9) and glycogen synthase kinase-3 (GSK3) phosphorylations that mediate the binding of YAP and Pin1 for transcriptional action, and of ubiquitin ligases Smurf1 and Nedd4L for Smad destruction ...