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We identified two predicted proteins in Schizosaccharomyces pombe, Rrp1 (SPAC17A2.12) and Rrp2 (SPBC23E6.02) that share 34% and 36% similarity to Saccharomyces cerevisiae Ris1p, respectively. Ris1p is a DNA-dependent ATP-ase involved in gene silencing and DNA repair. Rrp1 and Rrp2 also share similarity with S. cerevisiae Rad5 and S. pombe Rad8, containing SNF2-N, RING finger and Helicase-C domains...
A body of evidence accumulated over the past decade suggests that epigenetic mechanisms play an essential role in maintaining important cellular functions. Changes in epigenetic patterns (mainly DNA hyper- and hypomethylation and, more recently, histone modifications) may contribute to the development of cancer. Aberrant epigenetic events expand thorough tumor progression from the earliest to latest...
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