We report the isolation of the human orthologue of the mouse Osterix (Osx/Sp7) gene, a C2H2 zinc finger transcription factor of the SP gene family and putative "master" regulator of bone cell differentiation. The human SP7 cDNA encodes a putative 431 amino acid protein that contains three consecutive C2H2 zinc finger repeats. The SP7 protein is highly conserved between mice and humans with an overall sequence identity of 95%.
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