Iroquois-class homeodomain protein IRX-4, also known as Iroquois homeobox protein 4, is a protein that in humans is encoded by the IRX4 gene.
IRX4 is a member of the Iroquois homeobox gene family. Members of this family appear to play multiple roles during pattern formation of vertebrate embryos.
This article incorporates text from the United States National Library of Medicine, which is in the public domain.