"The function of binding to a specific DNA sequence in order to modulate transcription. The transcription factor may or may not also interact selectively with a protein or macromolecular complex [goid 3700] [evidence IEA]; Functions to initiate or regulate RNA polymerase II transcription by binding an enhancer region of DNA [goid 3705] [pmid 18234320] [evidence IMP]; Functions to initiate or regulate RNA polymerase II transcription by binding an enhancer region of DNA [goid 3705] [pmid 8576131] [evidence IMP]; Functions to initiate or regulate RNA polymerase II transcription by binding an enhancer region of DNA [goid 3705] [pmid 2249772] [evidence IDA]; Interacting selectively with any protein or protein complex (a complex of two or more proteins that may include other nonprotein molecules) [goid 5515] [pmid 17353931] [evidence IPI]; Plays a role in regulating transcription; may bind a promoter or enhancer DNA sequence or interact with a DNA-binding transcription factor [goid 30528] [evidence IEA]; Interacting selectively with an identical protein to form a homodimer [goid 42803] [pmid 2249772] [evidence TAS]; Interacting selectively with an identical protein to form a homodimer [goid 42803] [pmid 8576131] [evidence IPI]; Interacting selectively with any of the basic Helix-Loop-Helix (bHLH) superfamily of transcription factors, important regulatory components in transciptional networks of many developmental pathways [goid 43425] [pmid 8576131] [evidence IPI]; Interacting selectively with DNA of a specific nucleotide composition, e.g. GC-rich DNA binding, or with a specific sequence motif or type of DNA e.g. promotor binding or rDNA binding [goid 43565] [pmid 8576131] [evidence IDA]; Interacting selectively with DNA of a specific nucleotide composition, e.g. GC-rich DNA binding, or with a specific sequence motif or type of DNA e.g. promotor binding or rDNA binding [goid 43565] [pmid 2249772] [evidence IDA]; Interacting selectively with a nonidentical protein to form a heterodimer [goid 46982] [pmid 8576131] [evidence IPI]"