PathwayStep2865 PathwayStep2838 Depyrimidination Base-Excision Repair, AP Site Formation Base excision repair is initiated by DNA glycosylases that hydrolytically cleave of the base-deoxyribose glycosyl bond of a damaged nucleotide residue releasing the damaged base (Lindahl and Wood, 1999). GENE ONTOLOGYGO:0006285 Pubmed10583946 Pubmed11937636 Reactome Database ID Release 4373929 Reactome, http://www.reactome.org ReactomeREACT_804 Depurination