PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 12718543-12 2003 These data indicate a dual role of hSMUG1 as a backup enzyme for UNG and a primary repair enzyme for a subset of oxidized pyrimidines such as fU, hmU, and hoU. 5-hydroxymethyluracil 146-149 single-strand-selective monofunctional uracil-DNA glycosylase 1 Homo sapiens 35-41