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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Orthodenticle homeobox 2 ： ウィキペディア英語版 Orthodenticle homeobox 2 Homeobox protein OTX2 is a protein that in humans is encoded by the ''OTX2'' gene.〔(【引用サイトリンク】 url = http://www.ncbi.nlm.nih.gov/sites/entrez?Db=gene&Cmd=ShowDetailView&TermToSearch=5015 )〕 == Function == This gene encodes a member of the bicoid sub-family of homeodomain-containing transcription factors. The encoded protein acts as a transcription factor and may play a role in brain and sensory organ development. A similar protein in mice is required for proper forebrain development. Two transcript variants encoding distinct isoforms have been identified for this gene. Other alternative splice variants may exist, but their full length sequences have not been determined.〔 Otx2 is a group of homeobox genes that are typically described as a head organizer in the primitive streak stage of embryonic development. Otx2, which is an encoded protein that plays the role of a transcription factor, has also been shown to be involved in the regional patterning of the midbrain and forebrain. This group of genes demonstrates later in progression to have an influence on the formation of the sensory organs, pituitary gland, pineal gland, inner ear, eye and optic nerve. Otx2 not only has a prominent role in developing this area but also aids in insuring that the retina and brain stay intact. This group of genes has a huge role in development and if it is expressed incorrectly it can have detrimental effects on the fetus. Otx2 mutations have also been associated with seizures, developmental delays, short stature, structural abnormalities of the pituitary gland, and an early onset of degeneration of the retina. A “knockout” model on the group of Otx2 genes has been performed to see what effects it would have on the adult retina. It was found that without the Otx2 gene expression there was slow degeneration of photoreceptor cells in this area. Thus, proving that the homeobox genes of Otx2 are essential in forming a viable embryo. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Orthodenticle homeobox 2」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.