Entrez Summary: The protein encoded by this gene contains five GTF2I-like repeats and each repeat possesses a potential helix-loop-helix (HLH) motif. It may have the ability to interact with other HLH-proteins and function as a transcription factor or as a positive transcriptional regulator under the control of Retinoblastoma protein. This gene plays a role in craniofacial and cognitive development and mutations have been associated with Williams-Beuren syndrome, a multisystem developmental disorder caused by deletion of multiple genes at 7q11.23. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Nov 2010].
UniProt Summary: 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}.
Pfam DomainsGO Terms
Pfam Domains
GTF2I
GO Terms
transition between slow and fast fiber
regulation of skeletal muscle adaptation
regulation of muscle adaptation
regulation of muscle system process
transcription by RNA polymerase II
regulation of system process
transcription, DNA-templated
nucleic acid-templated transcription
RNA biosynthetic process
DNA-binding transcription factor activity
nucleobase-containing compound biosynthetic process