RCC1-like domain and ORF15: essentials in RPGR gene.

Clinical research into mutations of the RPGR gene showed that lack of either the RCC1-like domain of the ORF15 causes X-linked retinitis pigmentosa. Thus, the ORF15 and RCC1-like domain play a crucial role in the human retina. Further sudies on the role of the RCC1-like domain in the visual Cascade and additional findings of related proteins in the retina or even other organs, will give us a more precise understanding of this protein.