General transcription factor II-I repeat domain-containing protein 1 (GTF2IRD1)

Might be a transcription regulator involved in cell-cycle development and skeletal muscle differentiation. May repress GTF2I transcriptional functions, by preventing its nuclear residency, or by inhibiting its transcriptional activation.

May contribute to slow-twitch fiber type specificity during myogenesis and in regenerating muscles. Binds troponin I slow-muscle fiber enhancer (USE B1).