PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 7732378-1 1995 Under prebiotic conditions, formaldehyde adds to uracil at the C-5 position to produce 5-hydroxymethyluracil with favorable rates and equilibria. 5-hydroxymethyluracil 87-108 complement C5 Homo sapiens 63-66