Transcription factor that binds to the immunoglobulin enchancer Mu-E5/KE5-motif. Involved in the initiation of neuronal differentiation. Activates transcription by binding to the E box (5'-CANNTG-3'). Binds to the E-box present in the somatostatin receptor 2 initiator element (SSTR2-INR) to activate transcription. Preferentially binds to either 5'-ACANNTGT-3' or 5'-CCANNTGG-3'. Efficient DNA binding requires dimerization with another bHLH protein. Forms homo- or heterooligomers with myogenin. Interacts with HIVEP2. Interacts with NEUROD2. Expressed in adult heart, brain, placenta, skeletal muscle and to a lesser extent in the lung. In developing embryonic tissues, expression mostly occurs in the brain. 3 isoforms of the human protein are produced by alternative splicing. Note: This description may include information from UniProtKB.
Molecular Function: bHLH transcription factor binding; DNA binding; identical protein binding; protein binding; protein C-terminus binding; protein heterodimerization activity; protein homodimerization activity; transcription factor activity
Biological Process: positive regulation of neuron differentiation; positive regulation of transcription from RNA polymerase II promoter; positive regulation of transcription, DNA-dependent; protein-DNA complex assembly; transcription initiation; transcription initiation from RNA polymerase II promoter