Prediction of an RRNA Methyltransferase Domain in Human Tumor-specific Nucleolar Protein P120
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Using computer methods for identification of amino acid motifs in sequence databases and multiple alignment, it is shown that human proliferation-associated nucleolar protein P120 contains a putative methyltransferase domain that is conserved in a group of bacterial proteins. It is hypothesized that P120 and the related prokaryotic proteins are rRNA methylases required for division of all types of cells.
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