PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 14500848-5 2003 Using this novel approach, we show that depletion of a single deoxyribonucleoside causes reversible arrest of cells in S phase with concomitant phosphorylation and activation of the S phase checkpoint kinase, Rad53. Deoxyribonucleosides 62-81 serine/threonine/tyrosine protein kinase RAD53 Saccharomyces cerevisiae S288C 209-214