[Term] id: PR:000000003 name: HLH DNA-binding protein inhibitor def: "A protein that belongs to the clade D of the bHLH proteins (see PMID:20219281) with a core domain composition consisting of a helix-loop-helix DNA-binding domain (Pfam:PF00010) (HLH), common to the basic HLH family of transcription factors, but lacking the DNA binding domain to the consensus E box response element (CANNTG). By binding to basic HLH transcription factors, proteins in this class regulate gene expression." [PRO:CNA, PMID:20219281] comment: Category=family. synonym: "DNA-binding protein inhibitor ID" EXACT [] synonym: "ID protein" RELATED [] synonym: "bHLH clade D" BROAD [PMID:20219281] synonym: "bHLH class V" BROAD [PMID:8018712] xref: PIRSF:PIRSF005808 is_a: PR:000000001 ! protein