Homeodomain:同源异型结构域由同源框编码的60个氨基酸序列,被称为同源异型结构域。Definition:A domain in a protein that is encoded for by a homeobox, that consists of about 60 amino acid residues which are usually similar from one such domain to another, and that recognizes and binds to specific DNA sequences in genes regulated by the homeotic gene.