PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 12562772-1 2003 The polyamine biosynthetic enzyme ornithine decarboxylase (ODC) is degraded by the 26 S proteasome via a ubiquitin-independent pathway in mammalian cells. Polyamines 4-13 ubiquitin Saccharomyces cerevisiae S288C 105-114