STAT proteins (Signal Transducers and Activators of Transcription) are a family of transcription factors that are specifically activated to regulate gene transcription when cells encounter cytokines and growth factors. STAT proteins also include an SH2 domain Pfam:PF00017.

1: Three-dimensional structure of the Stat3beta homodimer bound to DNA. Becker S, Groner B, Muller CW; Nature 1998;394:145-151. PMID:9671298

2: Structure of the amino-terminal protein interaction domain of STAT-4. Vinkemeier U, Moarefi I, Darnell JE Jr, Kuriyan J; Science 1998;279:1048-1052. PMID:9461439