The function of Ensembl gene identifier ENSG00000006704 (GTF2IRD1, GTF2I repeat domain containing 1) is as follows. May be a transcription regulator involved in cell-cycle progression 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). Binds specifically and with high affinity to the EFG sequences derived from the early enhancer of HOXC8 (By similarity). {ECO:0000250, ECO:0000269|PubMed:11438732}.