Andersson Leif, Andersson Göran, Hjälm Göran, Jiang Lin, Lindblad-Toh Kerstin, Lindroth Anders M, Markljung Ellen, Nyström Anna-Maja, Rubin Carl-Johan, Sundström Elisabeth
Department of Medical Biochemistry and Microbiology; Uppsala University; Uppsala, Sweden.
Transcription. 2010 Nov;1(3):144-148. doi: 10.4161/trns.1.3.13343. Epub 2010 Aug 17.
A DNA transposon integrated into -the genome of a primitive mammal some 200 million years ago and, millions of years later, it evolved an essential function in the common ancestor of all placental mammals. This protein, now named ZBED6, was recently discovered because a mutation disrupting one of its binding sites, in an intron of the IGF2 gene, makes pigs grow more muscle. These findings have revealed a new mechanism for regulating muscle growth as well as a novel transcription factor that appears to be of major importance for transcriptional regulation in placental mammals.
大约2亿年前,一个DNA转座子整合到一种原始哺乳动物的基因组中,数百万年后,它在所有胎盘哺乳动物的共同祖先中进化出了一种重要功能。这种蛋白质现在被命名为ZBED6,最近被发现是因为在IGF2基因的一个内含子中,一个破坏其结合位点之一的突变使猪长出了更多肌肉。这些发现揭示了一种调节肌肉生长的新机制,以及一种新的转录因子,它似乎对胎盘哺乳动物的转录调控至关重要。