In vertebrates, the genes encoding the class of transcription factors called homeobox genes are found in clusters named A, B, C, and D on four separate chromosomes. Expression of these proteins is spatially and temporally regulated during embryonic development. This gene is part of the A cluster on chromosome 7 and encodes a DNA-binding transcription factor which may regulate gene expression, morphogenesis, and differentiation. Three transcript variants encoding two different isoforms have been found for this gene.
HOXA3; homeobox A3; homeo box A3 , HOX1, HOX1E; homeobox protein Hox-A3; Homeo box 1E; Homeo box A3; Homeobox 1E; Homeobox protein HOX A3; Homeobox protein HOXA3; Homeobox1E; HomeoboxA3; HOX 1; Hox 1.5 like protein; HOX 1E; HOX A3; HOX1; Hox1.5; Hox1.5 like protein; HOX1E; HOXA 3; MGC10155; Hox-1.5-like protein; homeobox protein Hox-1E; homeobox protein Hox-D3; homeodomain protein HOXD-3