The Rhox genes.
Homeobox genes encode transcription factors that have crucial roles in embryogenesis. A recently discovered set of homeobox genes--the Rhox genes--are expressed during both embryogenesis and in adult reproductive tissues. The 33 known mouse Rhox genes are clustered together in a single region on the X chromosome, while likely descendents of the primodial Rhox cluster, Arx and Esx1, have moved to other positions on the X chromosome. Here, we summarize what is known about the regulation and function of Rhox cluster and Rhox-related genes during embryogenesis and gametogenesis. The founding member of the Rhox gene cluster--Rhox5 (previously known as Pem)--has been studied in the most depth and thus is the focus of this review. We also discuss the unusually rapid evolution of the Rhox gene cluster.
MacLean
James A
JA
Department of Physiology, School of Medicine, Southern Illinois University, Carbondale, IL 62901, USA.
Wilkinson
Miles F
MF
D000818:Animals; D047108:Embryonic Development / Q000235:genetics*; D005260:Female; D005718:Gametogenesis / Q000235:genetics*; D005786:Gene Expression Regulation; D005801:Genes, Homeobox; D051379:Mice; D005810:Multigene Family; D011247:Pregnancy; D014157:Transcription Factors / Q000235:genetics
D014157:Transcription Factors