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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Cloning and comparative sequence analysis of PUM1 and PUM2 genes, human members of the Pumilio family of RNA-binding proteins.

Drosophila gene Pumilio (Pum) is a founder member of an evolutionarily conserved family of RNA-binding proteins that are present from yeast to mammals, and act as translational repressors during embryo development and cell differentiation. The human genome contains two Pumilio related genes, PUM1 and PUM2, that encode 127 and 114 kDa proteins with evolutionarily highly conserved Pum RNA-binding domain (86 and 88% homology with the fly Pum protein). PUM1 and PUM2 proteins share 83% overall similarity, with RNA-binding domain being 91% identical. Both PUM1 and PUM2 show relatively widespread and mostly overlapping expression in human tissues, and are very large genes with highly conserved gene structure. PUM1 consists of 22 exons, spanning about 150 kb on chromosome 1p35.2, whereas PUM2 consists of 20 exons and spans at least 80 kb on chromosome 2p23-24. Extremely high evolutionary conservation of the RNA-binding domain from yeast to humans, and conserved function of Pumilio proteins in invertebrates and lower vertebrates suggest that mammalian Pumilio proteins could also play an important role in translational regulation of embryogenesis and cell development and differentiation.[1]


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